-- Hoogle documentation, generated by Haddock
-- See Hoogle, http://www.haskell.org/hoogle/

-- | A library for generating 2D Charts and Plots
--   
--   A library for generating 2D Charts and Plots, with backends provided
--   by Cairo (http://hackage.haskell.org/package/Chart-cairo) and
--   Diagrams (http://hackage.haskell.org/package/Chart-diagrams).
--   Documentation: https://github.com/timbod7/haskell-chart/wiki.
@package Chart
@version 1.9.3

module Graphics.Rendering.Chart.Geometry

-- | A rectangle is defined by two points.
data Rect
Rect :: Point -> Point -> Rect

-- | A point in two dimensions.
data Point
Point :: Double -> Double -> Point
[p_x] :: Point -> Double
[p_y] :: Point -> Double

-- | A vector in two dimensions.
data Vector
Vector :: Double -> Double -> Vector
[v_x] :: Vector -> Double
[v_y] :: Vector -> Double
type RectSize = (Double, Double)
type Range = (Double, Double)

-- | Convert a Point to a Vector.
pointToVec :: Point -> Vector

-- | Create a rectangle based upon the coordinates of 4 points.
mkrect :: Point -> Point -> Point -> Point -> Rect

-- | Make a path from a rectangle.
rectPath :: Rect -> Path

-- | Add a point and a vector.
pvadd :: Point -> Vector -> Point

-- | Subtract a vector from a point.
pvsub :: Point -> Vector -> Point

-- | Subtract two points.
psub :: Point -> Point -> Vector

-- | Angle of a vector (counterclockwise from positive x-axis)
vangle :: Vector -> Double

-- | Length/magnitude of a vector
vlen :: Vector -> Double

-- | Scale a vector by a constant.
vscale :: Double -> Vector -> Vector

-- | Test if a point is within a rectangle.
within :: Point -> Rect -> Bool

-- | Intersects the rectangles. If they intersect the intersection
--   rectangle is returned. LMin is the empty rectangle /
--   intersection and LMax is the infinite plane.
intersectRect :: Limit Rect -> Limit Rect -> Limit Rect

-- | Edge of a rectangle.
data RectEdge
E_Top :: RectEdge
E_Bottom :: RectEdge
E_Left :: RectEdge
E_Right :: RectEdge
data Limit a
LMin :: Limit a
LValue :: a -> Limit a
LMax :: Limit a

-- | A function mapping between points.
type PointMapFn x y = (Limit x, Limit y) -> Point

-- | The path type used by Charts.
--   
--   A path can consist of several subpaths. Each is started by a
--   MoveTo operation. All subpaths are open, except the last one,
--   which may be closed using the Close operation. When filling a
--   path all subpaths are closed implicitly.
--   
--   Closing a subpath means that a line is drawn from the end point to the
--   start point of the subpath.
--   
--   If a Arc (or ArcNeg) is drawn a implicit line from the
--   last end point of the subpath is drawn to the beginning of the arc.
--   Another implicit line is drawn from the end of an arc to the beginning
--   of the next path segment.
--   
--   The beginning of a subpath is either (0,0) or set by a MoveTo
--   instruction. If the first subpath is started with an arc the beginning
--   of that subpath is the beginning of the arc.
data Path
MoveTo :: Point -> Path -> Path
LineTo :: Point -> Path -> Path
Arc :: Point -> Double -> Double -> Double -> Path -> Path
ArcNeg :: Point -> Double -> Double -> Double -> Path -> Path
End :: Path
Close :: Path

-- | Move the paths pointer to the given location and draw a straight line
--   while doing so.
lineTo :: Point -> Path

-- | Move the paths pointer to the given location.
moveTo :: Point -> Path

-- | Short-cut for lineTo, if you don't want to create a
--   Point.
lineTo' :: Double -> Double -> Path

-- | Short-cut for moveTo, if you don't want to create a
--   Point.
moveTo' :: Double -> Double -> Path

-- | Draw the arc of a circle. A straight line connects the end of the
--   previous path with the beginning of the arc. The zero angle points in
--   direction of the positive x-axis. Angles increase in clock-wise
--   direction. If the stop angle is smaller then the start angle it is
--   increased by multiples of 2 * pi until is is greater or
--   equal.
arc :: Point -> Double -> Double -> Double -> Path

-- | Short-cut for arc, if you don't want to create a Point.
arc' :: Double -> Double -> Double -> Double -> Double -> Path

-- | Like arc, but draws from the stop angle to the start angle
--   instead of between them.
arcNeg :: Point -> Double -> Double -> Double -> Path

-- | Short-cut for arcNeg, if you don't want to create a
--   Point.
arcNeg' :: Double -> Double -> Double -> Double -> Double -> Path

-- | A closed empty path. Closes a path when appended.
close :: Path

-- | Fold the given path to a monoid structure.
foldPath :: Monoid m => (Point -> m) -> (Point -> m) -> (Point -> Double -> Double -> Double -> m) -> (Point -> Double -> Double -> Double -> m) -> m -> Path -> m

-- | Enriches the path with explicit instructions to draw lines, that
--   otherwise would be implicit. See Path for details about what
--   lines in paths are implicit.
makeLinesExplicit :: Path -> Path

-- | Transform a point using the given matrix.
transformP :: Matrix -> Point -> Point

-- | Scale a point.
scaleP :: Vector -> Point -> Point

-- | Rotate a point around the origin. The angle is given in radians.
rotateP :: Double -> Point -> Point

-- | Translate a point.
translateP :: Vector -> Point -> Point

-- | Copied from Graphics.Rendering.Cairo.Matrix
data Matrix
Matrix :: !Double -> !Double -> !Double -> !Double -> !Double -> !Double -> Matrix
[xx] :: Matrix -> !Double
[yx] :: Matrix -> !Double
[xy] :: Matrix -> !Double
[yy] :: Matrix -> !Double
[x0] :: Matrix -> !Double
[y0] :: Matrix -> !Double

-- | Copied from Graphics.Rendering.Cairo.Matrix
identity :: Matrix

-- | Copied from Graphics.Rendering.Cairo.Matrix Rotations angle is given
--   in radians.
rotate :: Double -> Matrix -> Matrix

-- | Copied and adopted from Graphics.Rendering.Cairo.Matrix
scale :: Vector -> Matrix -> Matrix

-- | Copied and adopted from Graphics.Rendering.Cairo.Matrix
translate :: Vector -> Matrix -> Matrix

-- | Copied from Graphics.Rendering.Cairo.Matrix
scalarMultiply :: Double -> Matrix -> Matrix

-- | Copied from Graphics.Rendering.Cairo.Matrix
adjoint :: Matrix -> Matrix

-- | Copied from Graphics.Rendering.Cairo.Matrix
invert :: Matrix -> Matrix
instance GHC.Show.Show Graphics.Rendering.Chart.Geometry.Matrix
instance GHC.Show.Show Graphics.Rendering.Chart.Geometry.Rect
instance GHC.Show.Show a => GHC.Show.Show (Graphics.Rendering.Chart.Geometry.Limit a)
instance GHC.Show.Show Graphics.Rendering.Chart.Geometry.Vector
instance GHC.Show.Show Graphics.Rendering.Chart.Geometry.Point
instance GHC.Num.Num Graphics.Rendering.Chart.Geometry.Matrix
instance GHC.Base.Semigroup Graphics.Rendering.Chart.Geometry.Path
instance GHC.Base.Monoid Graphics.Rendering.Chart.Geometry.Path

module Graphics.Rendering.Chart.Backend.Types

-- | The different supported line ends.
data LineCap

-- | Just cut the line straight.
LineCapButt :: LineCap

-- | Make a rounded line end.
LineCapRound :: LineCap

-- | Make a square that ends the line.
LineCapSquare :: LineCap

-- | The different supported ways to join line ends.
data LineJoin

-- | Extends the outline until they meet each other.
LineJoinMiter :: LineJoin

-- | Draw a circle fragment to connet line end.
LineJoinRound :: LineJoin

-- | Like miter, but cuts it off if a certain threshold is exceeded.
LineJoinBevel :: LineJoin

-- | Data type for the style of a line.
data LineStyle
LineStyle :: Double -> AlphaColour Double -> [Double] -> LineCap -> LineJoin -> LineStyle

-- | The thickness of a line in device units.
[_line_width] :: LineStyle -> Double

-- | The color of a line.
[_line_color] :: LineStyle -> AlphaColour Double

-- | The dash pattern. Every value at a even index gives a dash width and
--   every value at a odd index gives a gap width in device units.
[_line_dashes] :: LineStyle -> [Double]

-- | How to end a line.
[_line_cap] :: LineStyle -> LineCap

-- | How to connect two lines.
[_line_join] :: LineStyle -> LineJoin

-- | The possible slants of a font.
data FontSlant

-- | Normal font style without slant.
FontSlantNormal :: FontSlant

-- | With a slight slant.
FontSlantItalic :: FontSlant

-- | With a greater slant.
FontSlantOblique :: FontSlant

-- | The possible weights of a font.
data FontWeight

-- | Normal font style without weight.
FontWeightNormal :: FontWeight

-- | Bold font.
FontWeightBold :: FontWeight

-- | Data type for a font.
data FontStyle
FontStyle :: String -> Double -> FontSlant -> FontWeight -> AlphaColour Double -> FontStyle

-- | The font family or font face to use.
[_font_name] :: FontStyle -> String

-- | The height of the rendered font in device coordinates.
[_font_size] :: FontStyle -> Double

-- | The slant to render with.
[_font_slant] :: FontStyle -> FontSlant

-- | The weight to render with.
[_font_weight] :: FontStyle -> FontWeight

-- | The color to render text with.
[_font_color] :: FontStyle -> AlphaColour Double

-- | Possible horizontal anchor points for text.
data HTextAnchor
HTA_Left :: HTextAnchor
HTA_Centre :: HTextAnchor
HTA_Right :: HTextAnchor

-- | Possible vertical anchor points for text.
data VTextAnchor
VTA_Top :: VTextAnchor
VTA_Centre :: VTextAnchor
VTA_Bottom :: VTextAnchor
VTA_BaseLine :: VTextAnchor

-- | Text metrics returned by textSize.
data TextSize
TextSize :: Double -> Double -> Double -> Double -> Double -> TextSize

-- | The total width of the text.
[textSizeWidth] :: TextSize -> Double

-- | The ascent or space above the baseline.
[textSizeAscent] :: TextSize -> Double

-- | The decent or space below the baseline.
[textSizeDescent] :: TextSize -> Double

-- | The Y bearing.
[textSizeYBearing] :: TextSize -> Double

-- | The total height of the text.
[textSizeHeight] :: TextSize -> Double

-- | Abstract data type for a fill style.
--   
--   The contained action sets the required fill style in the rendering
--   state.
newtype FillStyle
FillStyleSolid :: AlphaColour Double -> FillStyle
[_fill_color] :: FillStyle -> AlphaColour Double

-- | A function to align points for a certain rendering device.
type AlignmentFn = Point -> Point

-- | Holds the point and coordinate alignment function.
data AlignmentFns
AlignmentFns :: AlignmentFn -> AlignmentFn -> AlignmentFns

-- | An adjustment applied immediately prior to points being displayed in
--   device coordinates.
--   
--   When device coordinates correspond to pixels, a cleaner image is
--   created if this transform rounds to the nearest pixel. With
--   higher-resolution output, this transform can just be the identity
--   function.
--   
--   This is usually used to align prior to stroking.
[afPointAlignFn] :: AlignmentFns -> AlignmentFn

-- | The adjustment applied immediately prior to coordinates being
--   transformed.
--   
--   This is usually used to align prior to filling.
[afCoordAlignFn] :: AlignmentFns -> AlignmentFn

-- | Alignment to render on raster based graphics.
bitmapAlignmentFns :: AlignmentFns

-- | Alignment to render on vector based graphics.
vectorAlignmentFns :: AlignmentFns
line_width :: Lens' LineStyle Double
line_join :: Lens' LineStyle LineJoin
line_dashes :: Lens' LineStyle [Double]
line_color :: Lens' LineStyle (AlphaColour Double)
line_cap :: Lens' LineStyle LineCap
font_weight :: Lens' FontStyle FontWeight
font_slant :: Lens' FontStyle FontSlant
font_size :: Lens' FontStyle Double
font_name :: Lens' FontStyle String
font_color :: Lens' FontStyle (AlphaColour Double)
fill_color :: Iso' FillStyle (AlphaColour Double)
instance GHC.Classes.Eq Graphics.Rendering.Chart.Backend.Types.FillStyle
instance GHC.Show.Show Graphics.Rendering.Chart.Backend.Types.FillStyle
instance GHC.Classes.Eq Graphics.Rendering.Chart.Backend.Types.TextSize
instance GHC.Show.Show Graphics.Rendering.Chart.Backend.Types.TextSize
instance GHC.Classes.Ord Graphics.Rendering.Chart.Backend.Types.VTextAnchor
instance GHC.Classes.Eq Graphics.Rendering.Chart.Backend.Types.VTextAnchor
instance GHC.Show.Show Graphics.Rendering.Chart.Backend.Types.VTextAnchor
instance GHC.Classes.Ord Graphics.Rendering.Chart.Backend.Types.HTextAnchor
instance GHC.Classes.Eq Graphics.Rendering.Chart.Backend.Types.HTextAnchor
instance GHC.Show.Show Graphics.Rendering.Chart.Backend.Types.HTextAnchor
instance GHC.Classes.Eq Graphics.Rendering.Chart.Backend.Types.FontStyle
instance GHC.Show.Show Graphics.Rendering.Chart.Backend.Types.FontStyle
instance GHC.Classes.Ord Graphics.Rendering.Chart.Backend.Types.FontWeight
instance GHC.Classes.Eq Graphics.Rendering.Chart.Backend.Types.FontWeight
instance GHC.Show.Show Graphics.Rendering.Chart.Backend.Types.FontWeight
instance GHC.Classes.Ord Graphics.Rendering.Chart.Backend.Types.FontSlant
instance GHC.Classes.Eq Graphics.Rendering.Chart.Backend.Types.FontSlant
instance GHC.Show.Show Graphics.Rendering.Chart.Backend.Types.FontSlant
instance GHC.Classes.Eq Graphics.Rendering.Chart.Backend.Types.LineStyle
instance GHC.Show.Show Graphics.Rendering.Chart.Backend.Types.LineStyle
instance GHC.Classes.Ord Graphics.Rendering.Chart.Backend.Types.LineJoin
instance GHC.Classes.Eq Graphics.Rendering.Chart.Backend.Types.LineJoin
instance GHC.Show.Show Graphics.Rendering.Chart.Backend.Types.LineJoin
instance GHC.Classes.Ord Graphics.Rendering.Chart.Backend.Types.LineCap
instance GHC.Classes.Eq Graphics.Rendering.Chart.Backend.Types.LineCap
instance GHC.Show.Show Graphics.Rendering.Chart.Backend.Types.LineCap
instance Data.Default.Class.Default Graphics.Rendering.Chart.Backend.Types.FillStyle
instance Data.Default.Class.Default Graphics.Rendering.Chart.Backend.Types.FontStyle
instance Data.Default.Class.Default Graphics.Rendering.Chart.Backend.Types.FontWeight
instance Data.Default.Class.Default Graphics.Rendering.Chart.Backend.Types.FontSlant
instance Data.Default.Class.Default Graphics.Rendering.Chart.Backend.Types.LineStyle

-- | This module provides the implementation details common to all
--   ChartBackends.
module Graphics.Rendering.Chart.Backend.Impl

-- | The abstract drawing operation generated when using the the chart
--   drawing API.
--   
--   See the documentation of the different function for the correct
--   semantics of each instruction:
--   
--   
--   
- strokePath, fillPath
--   
- drawText, textSize
--   
- getPointAlignFn, getCoordAlignFn,
--   AlignmentFns
--   
- withTransform, withClipRegion
--   
- withLineStyle, withFillStyle,
--   withFontStyle
--   
data ChartBackendInstr a
[StrokePath] :: Path -> ChartBackendInstr ()
[FillPath] :: Path -> ChartBackendInstr ()
[GetTextSize] :: String -> ChartBackendInstr TextSize
[DrawText] :: Point -> String -> ChartBackendInstr ()
[GetAlignments] :: ChartBackendInstr AlignmentFns
[WithTransform] :: Matrix -> Program ChartBackendInstr a -> ChartBackendInstr a
[WithFontStyle] :: FontStyle -> Program ChartBackendInstr a -> ChartBackendInstr a
[WithFillStyle] :: FillStyle -> Program ChartBackendInstr a -> ChartBackendInstr a
[WithLineStyle] :: LineStyle -> Program ChartBackendInstr a -> ChartBackendInstr a
[WithClipRegion] :: Rect -> Program ChartBackendInstr a -> ChartBackendInstr a

-- | A BackendProgram provides the capability to render a chart
--   somewhere.
--   
--   The coordinate system of the backend has its initial origin (0,0) in
--   the top left corner of the drawing plane. The x-axis points towards
--   the top right corner and the y-axis points towards the bottom left
--   corner. The unit used by coordinates, the font size, and lengths is
--   the always the same, but depends on the backend. All angles are
--   measured in radians.
--   
--   The line, fill and font style are set to their default values
--   initially.
--   
--   Information about the semantics of the instructions can be found in
--   the documentation of ChartBackendInstr.
type BackendProgram a = Program ChartBackendInstr a

-- | Stroke the outline of the given path using the current
--   LineStyle. This function does not perform alignment
--   operations on the path. See Path for the exact semantic of
--   paths.
strokePath :: Path -> BackendProgram ()

-- | Fill the given path using the current FillStyle. The given path
--   will be closed prior to filling. This function does not perform
--   alignment operations on the path. See Path for the exact
--   semantic of paths.
fillPath :: Path -> BackendProgram ()

-- | Calculate a TextSize object with rendering information about
--   the given string without actually rendering it.
textSize :: String -> BackendProgram TextSize

-- | Draw a single-line textual label anchored by the baseline (vertical)
--   left (horizontal) point. Uses the current FontStyle for
--   drawing.
drawText :: Point -> String -> BackendProgram ()

-- | Apply the given transformation in this local environment when drawing.
--   The given transformation is applied after the current transformation.
--   This means both are combined.
withTransform :: Matrix -> BackendProgram a -> BackendProgram a

-- | Use the given font style in this local environment when drawing text.
--   
--   An implementing backend is expected to guarentee to support the
--   following font families: serif, sans-serif and
--   monospace;
--   
--   If the backend is not able to find or load a given font it is required
--   to fall back to a custom fail-safe font and use it instead.
withFontStyle :: FontStyle -> BackendProgram a -> BackendProgram a

-- | Use the given fill style in this local environment when filling paths.
withFillStyle :: FillStyle -> BackendProgram a -> BackendProgram a

-- | Use the given line style in this local environment when stroking
--   paths.
withLineStyle :: LineStyle -> BackendProgram a -> BackendProgram a

-- | Use the given clipping rectangle when drawing in this local
--   environment. The new clipping region is intersected with the given
--   clip region. You cannot escape the clip!
withClipRegion :: Rect -> BackendProgram a -> BackendProgram a

-- | Get the point alignment function
getPointAlignFn :: BackendProgram (Point -> Point)

-- | Get the coordinate alignment function
getCoordAlignFn :: BackendProgram (Point -> Point)

-- | This module provides the API for drawing operations abstracted to
--   drive arbitrary Backend.
module Graphics.Rendering.Chart.Backend

-- | A BackendProgram provides the capability to render a chart
--   somewhere.
--   
--   The coordinate system of the backend has its initial origin (0,0) in
--   the top left corner of the drawing plane. The x-axis points towards
--   the top right corner and the y-axis points towards the bottom left
--   corner. The unit used by coordinates, the font size, and lengths is
--   the always the same, but depends on the backend. All angles are
--   measured in radians.
--   
--   The line, fill and font style are set to their default values
--   initially.
--   
--   Information about the semantics of the instructions can be found in
--   the documentation of ChartBackendInstr.
type BackendProgram a = Program ChartBackendInstr a

-- | Fill the given path using the current FillStyle. The given path
--   will be closed prior to filling. This function does not perform
--   alignment operations on the path. See Path for the exact
--   semantic of paths.
fillPath :: Path -> BackendProgram ()

-- | Stroke the outline of the given path using the current
--   LineStyle. This function does not perform alignment
--   operations on the path. See Path for the exact semantic of
--   paths.
strokePath :: Path -> BackendProgram ()

-- | Draw a single-line textual label anchored by the baseline (vertical)
--   left (horizontal) point. Uses the current FontStyle for
--   drawing.
drawText :: Point -> String -> BackendProgram ()

-- | Calculate a TextSize object with rendering information about
--   the given string without actually rendering it.
textSize :: String -> BackendProgram TextSize

-- | Apply the given transformation in this local environment when drawing.
--   The given transformation is applied after the current transformation.
--   This means both are combined.
withTransform :: Matrix -> BackendProgram a -> BackendProgram a

-- | Use the given clipping rectangle when drawing in this local
--   environment. The new clipping region is intersected with the given
--   clip region. You cannot escape the clip!
withClipRegion :: Rect -> BackendProgram a -> BackendProgram a

-- | Use the given font style in this local environment when drawing text.
--   
--   An implementing backend is expected to guarentee to support the
--   following font families: serif, sans-serif and
--   monospace;
--   
--   If the backend is not able to find or load a given font it is required
--   to fall back to a custom fail-safe font and use it instead.
withFontStyle :: FontStyle -> BackendProgram a -> BackendProgram a

-- | Use the given fill style in this local environment when filling paths.
withFillStyle :: FillStyle -> BackendProgram a -> BackendProgram a

-- | Use the given line style in this local environment when stroking
--   paths.
withLineStyle :: LineStyle -> BackendProgram a -> BackendProgram a

-- | Get the point alignment function
getPointAlignFn :: BackendProgram (Point -> Point)

-- | Get the coordinate alignment function
getCoordAlignFn :: BackendProgram (Point -> Point)

-- | Text metrics returned by textSize.
data TextSize
TextSize :: Double -> Double -> Double -> Double -> Double -> TextSize

-- | The total width of the text.
[textSizeWidth] :: TextSize -> Double

-- | The ascent or space above the baseline.
[textSizeAscent] :: TextSize -> Double

-- | The decent or space below the baseline.
[textSizeDescent] :: TextSize -> Double

-- | The Y bearing.
[textSizeYBearing] :: TextSize -> Double

-- | The total height of the text.
[textSizeHeight] :: TextSize -> Double

-- | The different supported line ends.
data LineCap

-- | Just cut the line straight.
LineCapButt :: LineCap

-- | Make a rounded line end.
LineCapRound :: LineCap

-- | Make a square that ends the line.
LineCapSquare :: LineCap

-- | The different supported ways to join line ends.
data LineJoin

-- | Extends the outline until they meet each other.
LineJoinMiter :: LineJoin

-- | Draw a circle fragment to connet line end.
LineJoinRound :: LineJoin

-- | Like miter, but cuts it off if a certain threshold is exceeded.
LineJoinBevel :: LineJoin

-- | Data type for the style of a line.
data LineStyle
LineStyle :: Double -> AlphaColour Double -> [Double] -> LineCap -> LineJoin -> LineStyle

-- | The thickness of a line in device units.
[_line_width] :: LineStyle -> Double

-- | The color of a line.
[_line_color] :: LineStyle -> AlphaColour Double

-- | The dash pattern. Every value at a even index gives a dash width and
--   every value at a odd index gives a gap width in device units.
[_line_dashes] :: LineStyle -> [Double]

-- | How to end a line.
[_line_cap] :: LineStyle -> LineCap

-- | How to connect two lines.
[_line_join] :: LineStyle -> LineJoin
line_width :: Lens' LineStyle Double
line_color :: Lens' LineStyle (AlphaColour Double)
line_dashes :: Lens' LineStyle [Double]
line_cap :: Lens' LineStyle LineCap
line_join :: Lens' LineStyle LineJoin

-- | Abstract data type for a fill style.
--   
--   The contained action sets the required fill style in the rendering
--   state.
newtype FillStyle
FillStyleSolid :: AlphaColour Double -> FillStyle
[_fill_color] :: FillStyle -> AlphaColour Double

-- | The possible weights of a font.
data FontWeight

-- | Normal font style without weight.
FontWeightNormal :: FontWeight

-- | Bold font.
FontWeightBold :: FontWeight

-- | The possible slants of a font.
data FontSlant

-- | Normal font style without slant.
FontSlantNormal :: FontSlant

-- | With a slight slant.
FontSlantItalic :: FontSlant

-- | With a greater slant.
FontSlantOblique :: FontSlant

-- | Data type for a font.
data FontStyle
FontStyle :: String -> Double -> FontSlant -> FontWeight -> AlphaColour Double -> FontStyle

-- | The font family or font face to use.
[_font_name] :: FontStyle -> String

-- | The height of the rendered font in device coordinates.
[_font_size] :: FontStyle -> Double

-- | The slant to render with.
[_font_slant] :: FontStyle -> FontSlant

-- | The weight to render with.
[_font_weight] :: FontStyle -> FontWeight

-- | The color to render text with.
[_font_color] :: FontStyle -> AlphaColour Double

-- | Possible horizontal anchor points for text.
data HTextAnchor
HTA_Left :: HTextAnchor
HTA_Centre :: HTextAnchor
HTA_Right :: HTextAnchor

-- | Possible vertical anchor points for text.
data VTextAnchor
VTA_Top :: VTextAnchor
VTA_Centre :: VTextAnchor
VTA_Bottom :: VTextAnchor
VTA_BaseLine :: VTextAnchor
font_name :: Lens' FontStyle String
font_size :: Lens' FontStyle Double
font_slant :: Lens' FontStyle FontSlant
font_weight :: Lens' FontStyle FontWeight
font_color :: Lens' FontStyle (AlphaColour Double)

-- | A function to align points for a certain rendering device.
type AlignmentFn = Point -> Point

-- | Holds the point and coordinate alignment function.
data AlignmentFns

-- | Alignment to render on vector based graphics.
vectorAlignmentFns :: AlignmentFns

-- | Alignment to render on raster based graphics.
bitmapAlignmentFns :: AlignmentFns

-- | This module contains basic types and functions used for drawing.
--   
--   Note that Template Haskell is used to derive accessor functions (see
--   Lens) for each field of the following data types:
--   
--   
--   
- PointStyle
--   
--   
--   These accessors are not shown in this API documentation. They have the
--   same name as the field, but with the trailing underscore dropped.
--   Hence for data field f_::F in type D, they have type
--   
--   
--   f :: Control.Lens.Lens' D F
--   
module Graphics.Rendering.Chart.Drawing

-- | The different shapes a point can have.
data PointShape

-- | A circle.
PointShapeCircle :: PointShape

-- | Number of vertices and is right-side-up?
PointShapePolygon :: Int -> Bool -> PointShape

-- | A plus sign.
PointShapePlus :: PointShape

-- | A cross.
PointShapeCross :: PointShape

-- | Combination of a cross and a plus.
PointShapeStar :: PointShape
PointShapeArrowHead :: Double -> PointShape

-- | Ratio of minor to major axis and rotation
PointShapeEllipse :: Double -> Double -> PointShape

-- | Abstract data type for the style of a plotted point.
data PointStyle
PointStyle :: AlphaColour Double -> AlphaColour Double -> Double -> Double -> PointShape -> PointStyle

-- | The color to fill the point with.
[_point_color] :: PointStyle -> AlphaColour Double

-- | The color to stroke the outline with.
[_point_border_color] :: PointStyle -> AlphaColour Double

-- | The width of the outline.
[_point_border_width] :: PointStyle -> Double

-- | The radius of the tightest surrounding circle of the point.
[_point_radius] :: PointStyle -> Double

-- | The shape.
[_point_shape] :: PointStyle -> PointShape

-- | Draw a single point at the given location.
drawPoint :: PointStyle -> Point -> BackendProgram ()

-- | Align the path by applying the given function on all points.
alignPath :: (Point -> Point) -> Path -> Path

-- | Align the path using the environment's alignment function for
--   coordinates. This is generally useful when filling. See
--   alignPath and getCoordAlignFn.
alignFillPath :: Path -> BackendProgram Path

-- | Align the path using the environment's alignment function for points.
--   This is generally useful when stroking. See alignPath and
--   getPointAlignFn.
alignStrokePath :: Path -> BackendProgram Path

-- | The points will be aligned by the getCoordAlignFn, so that when
--   drawing bitmaps, the edges of the region will fall between pixels.
alignFillPoints :: [Point] -> BackendProgram [Point]

-- | The points will be aligned by the getPointAlignFn, so that when
--   drawing bitmaps, 1 pixel wide lines will be centred on the pixels.
alignStrokePoints :: [Point] -> BackendProgram [Point]

-- | Align the point using the environment's alignment function for
--   coordinates. See getCoordAlignFn.
alignFillPoint :: Point -> BackendProgram Point

-- | Align the point using the environment's alignment function for points.
--   See getPointAlignFn.
alignStrokePoint :: Point -> BackendProgram Point

-- | Draw lines between the specified points.
strokePointPath :: [Point] -> BackendProgram ()

-- | Fill the region with the given corners.
fillPointPath :: [Point] -> BackendProgram ()

-- | Apply a local rotation. The angle is given in radians.
withRotation :: Double -> BackendProgram a -> BackendProgram a

-- | Apply a local translation.
withTranslation :: Point -> BackendProgram a -> BackendProgram a

-- | Apply a local scale.
withScale :: Vector -> BackendProgram a -> BackendProgram a

-- | Apply a local scale on the x-axis.
withScaleX :: Double -> BackendProgram a -> BackendProgram a

-- | Apply a local scale on the y-axis.
withScaleY :: Double -> BackendProgram a -> BackendProgram a

-- | Changes the LineStyle and FillStyle to comply with the
--   given PointStyle.
withPointStyle :: PointStyle -> BackendProgram a -> BackendProgram a
withDefaultStyle :: BackendProgram a -> BackendProgram a

-- | Draw a line of text that is aligned at a different anchor point. See
--   drawText.
drawTextA :: HTextAnchor -> VTextAnchor -> Point -> String -> BackendProgram ()

-- | Draw a textual label anchored by one of its corners or edges, with
--   rotation. Rotation angle is given in degrees, rotation is performed
--   around anchor point. See drawText.
drawTextR :: HTextAnchor -> VTextAnchor -> Double -> Point -> String -> BackendProgram ()

-- | Draw a multi-line textual label anchored by one of its corners or
--   edges, with rotation. Rotation angle is given in degrees, rotation is
--   performed around anchor point. See drawText.
drawTextsR :: HTextAnchor -> VTextAnchor -> Double -> Point -> String -> BackendProgram ()

-- | Return the bounding rectangle for a text string positioned where it
--   would be drawn by drawText. See textSize.
textDrawRect :: HTextAnchor -> VTextAnchor -> Point -> String -> BackendProgram Rect

-- | Get the width and height of the string when rendered. See
--   textSize.
textDimension :: String -> BackendProgram RectSize

-- | The default sequence of colours to use when plotings different data
--   sets in a graph.
defaultColorSeq :: [AlphaColour Double]

-- | Create a solid line style (not dashed).
solidLine :: Double -> AlphaColour Double -> LineStyle

-- | Create a dashed line style.
dashedLine :: Double -> [Double] -> AlphaColour Double -> LineStyle

-- | Style for filled circle points.
filledCircles :: Double -> AlphaColour Double -> PointStyle

-- | Style for stroked circle points.
hollowCircles :: Double -> Double -> AlphaColour Double -> PointStyle

-- | Style for filled polygon points.
filledPolygon :: Double -> Int -> Bool -> AlphaColour Double -> PointStyle

-- | Style for stroked polygon points.
hollowPolygon :: Double -> Double -> Int -> Bool -> AlphaColour Double -> PointStyle

-- | Plus sign point style.
plusses :: Double -> Double -> AlphaColour Double -> PointStyle

-- | Cross point style.
exes :: Double -> Double -> AlphaColour Double -> PointStyle

-- | Combination of plus and cross point style.
stars :: Double -> Double -> AlphaColour Double -> PointStyle
arrows :: Double -> Double -> Double -> AlphaColour Double -> PointStyle

-- | Fill style that fill everything this the given colour.
solidFillStyle :: AlphaColour Double -> FillStyle
point_color :: Lens' PointStyle (AlphaColour Double)
point_border_color :: Lens' PointStyle (AlphaColour Double)
point_border_width :: Lens' PointStyle Double
point_radius :: Lens' PointStyle Double
point_shape :: Lens' PointStyle PointShape
instance Data.Default.Class.Default Graphics.Rendering.Chart.Drawing.PointStyle

-- | Datatypes and functions common to the implementation of the various
--   plot types.
module Graphics.Rendering.Chart.Plot.Types

-- | Interface to control plotting on a 2D area.
data Plot x y
Plot :: (PointMapFn x y -> BackendProgram ()) -> [(String, Rect -> BackendProgram ())] -> ([x], [y]) -> Plot x y

-- | Given the mapping between model space coordinates and device
--   coordinates, render this plot into a chart.
[_plot_render] :: Plot x y -> PointMapFn x y -> BackendProgram ()

-- | Details for how to show this plot in a legend. For each item the
--   string is the text to show, and the function renders a graphical
--   sample of the plot.
[_plot_legend] :: Plot x y -> [(String, Rect -> BackendProgram ())]

-- | All of the model space coordinates to be plotted. These are used to
--   autoscale the axes where necessary.
[_plot_all_points] :: Plot x y -> ([x], [y])

-- | Join any two plots together (they will share a legend).
joinPlot :: Plot x y -> Plot x y -> Plot x y

-- | A type class abstracting the conversion of a value to a Plot.
class ToPlot a
toPlot :: ToPlot a => a x y -> Plot x y
mapXY :: PointMapFn x y -> (x, y) -> Point
plot_render :: forall x_arac y_arad. Lens' (Plot x_arac y_arad) (PointMapFn x_arac y_arad -> BackendProgram ())
plot_legend :: forall x_arac y_arad. Lens' (Plot x_arac y_arad) [(String, Rect -> BackendProgram ())]
plot_all_points :: forall x_arac y_arad. Lens' (Plot x_arac y_arad) ([x_arac], [y_arad])
instance Graphics.Rendering.Chart.Plot.Types.ToPlot Graphics.Rendering.Chart.Plot.Types.Plot

-- | Functions to plot sets of points, marked in various styles.
module Graphics.Rendering.Chart.Plot.Points

-- | Value defining a series of datapoints, and a style in which to render
--   them.
data PlotPoints x y
PlotPoints :: String -> PointStyle -> [(x, y)] -> PlotPoints x y
[_plot_points_title] :: PlotPoints x y -> String
[_plot_points_style] :: PlotPoints x y -> PointStyle
[_plot_points_values] :: PlotPoints x y -> [(x, y)]
plot_points_title :: forall x_arxs y_arxt. Lens' (PlotPoints x_arxs y_arxt) String
plot_points_style :: forall x_arxs y_arxt. Lens' (PlotPoints x_arxs y_arxt) PointStyle
plot_points_values :: forall x_arxs y_arxt x_arBA y_arBB. Lens (PlotPoints x_arxs y_arxt) (PlotPoints x_arBA y_arBB) [(x_arxs, y_arxt)] [(x_arBA, y_arBB)]
instance Graphics.Rendering.Chart.Plot.Types.ToPlot Graphics.Rendering.Chart.Plot.Points.PlotPoints
instance Data.Default.Class.Default (Graphics.Rendering.Chart.Plot.Points.PlotPoints x y)

-- | Line plots
module Graphics.Rendering.Chart.Plot.Lines

-- | Value defining a series of (possibly disjointed) lines, and a style in
--   which to render them.
data PlotLines x y
PlotLines :: String -> LineStyle -> [[(x, y)]] -> [[(Limit x, Limit y)]] -> PlotLines x y
[_plot_lines_title] :: PlotLines x y -> String
[_plot_lines_style] :: PlotLines x y -> LineStyle

-- | The lines to be plotted
[_plot_lines_values] :: PlotLines x y -> [[(x, y)]]

-- | Additional lines to be plotted, specified using the Limit type to
--   allow referencing the edges of the plot area.
[_plot_lines_limit_values] :: PlotLines x y -> [[(Limit x, Limit y)]]
defaultPlotLineStyle :: LineStyle

-- | Helper function to plot a single horizontal line.
hlinePlot :: String -> LineStyle -> b -> Plot a b

-- | Helper function to plot a single vertical line.
vlinePlot :: String -> LineStyle -> a -> Plot a b
plot_lines_title :: forall x_as1Z y_as20. Lens' (PlotLines x_as1Z y_as20) String
plot_lines_style :: forall x_as1Z y_as20. Lens' (PlotLines x_as1Z y_as20) LineStyle
plot_lines_values :: forall x_as1Z y_as20. Lens' (PlotLines x_as1Z y_as20) [[(x_as1Z, y_as20)]]
plot_lines_limit_values :: forall x_as1Z y_as20. Lens' (PlotLines x_as1Z y_as20) [[(Limit x_as1Z, Limit y_as20)]]
instance Graphics.Rendering.Chart.Plot.Types.ToPlot Graphics.Rendering.Chart.Plot.Lines.PlotLines
instance Data.Default.Class.Default (Graphics.Rendering.Chart.Plot.Lines.PlotLines x y)

-- | Plots that don't show, but occupy space so as to effect axis scaling
module Graphics.Rendering.Chart.Plot.Hidden

-- | Value defining some hidden x and y values. The values are not
--   displayed, but they still affect axis scaling.
data PlotHidden x y
PlotHidden :: [x] -> [y] -> PlotHidden x y
[_plot_hidden_x_values] :: PlotHidden x y -> [x]
[_plot_hidden_y_values] :: PlotHidden x y -> [y]
plot_hidden_x_values :: forall x_asUU y_asUV x_asVW. Lens (PlotHidden x_asUU y_asUV) (PlotHidden x_asVW y_asUV) [x_asUU] [x_asVW]
plot_hidden_y_values :: forall x_asUU y_asUV y_asVX. Lens (PlotHidden x_asUU y_asUV) (PlotHidden x_asUU y_asVX) [y_asUV] [y_asVX]
instance Graphics.Rendering.Chart.Plot.Types.ToPlot Graphics.Rendering.Chart.Plot.Hidden.PlotHidden

-- | Plots that fill the area between two lines.
module Graphics.Rendering.Chart.Plot.FillBetween

-- | Value specifying a plot filling the area between two sets of Y
--   coordinates, given common X coordinates.
data PlotFillBetween x y
PlotFillBetween :: String -> FillStyle -> Maybe LineStyle -> [(x, (y, y))] -> PlotFillBetween x y
[_plot_fillbetween_title] :: PlotFillBetween x y -> String
[_plot_fillbetween_style] :: PlotFillBetween x y -> FillStyle
[_plot_fillbetween_line] :: PlotFillBetween x y -> Maybe LineStyle
[_plot_fillbetween_values] :: PlotFillBetween x y -> [(x, (y, y))]
plot_fillbetween_title :: forall x_at7Z y_at80. Lens' (PlotFillBetween x_at7Z y_at80) String
plot_fillbetween_style :: forall x_at7Z y_at80. Lens' (PlotFillBetween x_at7Z y_at80) FillStyle
plot_fillbetween_line :: forall x_at7Z y_at80. Lens' (PlotFillBetween x_at7Z y_at80) (Maybe LineStyle)
plot_fillbetween_values :: forall x_at7Z y_at80 x_atdj y_atdk. Lens (PlotFillBetween x_at7Z y_at80) (PlotFillBetween x_atdj y_atdk) [(x_at7Z, (y_at80, y_at80))] [(x_atdj, (y_atdk, y_atdk))]
instance Graphics.Rendering.Chart.Plot.Types.ToPlot Graphics.Rendering.Chart.Plot.FillBetween.PlotFillBetween
instance Data.Default.Class.Default (Graphics.Rendering.Chart.Plot.FillBetween.PlotFillBetween x y)

-- | Plot series of points with associated error bars.
module Graphics.Rendering.Chart.Plot.ErrBars

-- | Value defining a series of error intervals, and a style in which to
--   render them.
data PlotErrBars x y
PlotErrBars :: String -> LineStyle -> Double -> Double -> [ErrPoint x y] -> PlotErrBars x y
[_plot_errbars_title] :: PlotErrBars x y -> String
[_plot_errbars_line_style] :: PlotErrBars x y -> LineStyle
[_plot_errbars_tick_length] :: PlotErrBars x y -> Double
[_plot_errbars_overhang] :: PlotErrBars x y -> Double
[_plot_errbars_values] :: PlotErrBars x y -> [ErrPoint x y]
data ErrPoint x y
ErrPoint :: ErrValue x -> ErrValue y -> ErrPoint x y
[ep_x] :: ErrPoint x y -> ErrValue x
[ep_y] :: ErrPoint x y -> ErrValue y

-- | Value for holding a point with associated error bounds for each axis.
data ErrValue x
ErrValue :: x -> x -> x -> ErrValue x
[ev_low] :: ErrValue x -> x
[ev_best] :: ErrValue x -> x
[ev_high] :: ErrValue x -> x

-- | When the error is symmetric, we can simply pass in dx for the error.
symErrPoint :: (Num a, Num b) => a -> b -> a -> b -> ErrPoint a b
plot_errbars_title :: forall x_atZP y_atZQ. Lens' (PlotErrBars x_atZP y_atZQ) String
plot_errbars_line_style :: forall x_atZP y_atZQ. Lens' (PlotErrBars x_atZP y_atZQ) LineStyle
plot_errbars_tick_length :: forall x_atZP y_atZQ. Lens' (PlotErrBars x_atZP y_atZQ) Double
plot_errbars_overhang :: forall x_atZP y_atZQ. Lens' (PlotErrBars x_atZP y_atZQ) Double
plot_errbars_values :: forall x_atZP y_atZQ x_audG y_audH. Lens (PlotErrBars x_atZP y_atZQ) (PlotErrBars x_audG y_audH) [ErrPoint x_atZP y_atZQ] [ErrPoint x_audG y_audH]
instance (GHC.Show.Show x, GHC.Show.Show y) => GHC.Show.Show (Graphics.Rendering.Chart.Plot.ErrBars.ErrPoint x y)
instance GHC.Show.Show x => GHC.Show.Show (Graphics.Rendering.Chart.Plot.ErrBars.ErrValue x)
instance Graphics.Rendering.Chart.Plot.Types.ToPlot Graphics.Rendering.Chart.Plot.ErrBars.PlotErrBars
instance Data.Default.Class.Default (Graphics.Rendering.Chart.Plot.ErrBars.PlotErrBars x y)

-- | Candlestick charts for financial plotting
module Graphics.Rendering.Chart.Plot.Candle

-- | Value defining a financial interval: opening and closing prices, with
--   maxima and minima; and a style in which to render them. By convention,
--   there are different fill styles depending on whether the price rises
--   (open < close) or falls (close < open). (This plot type can also
--   be re-purposed for statistical intervals, e.g. minimum, first
--   quartile, median, third quartile, maximum.)
data PlotCandle x y
PlotCandle :: String -> LineStyle -> Bool -> FillStyle -> FillStyle -> Double -> Double -> Double -> [Candle x y] -> PlotCandle x y
[_plot_candle_title] :: PlotCandle x y -> String
[_plot_candle_line_style] :: PlotCandle x y -> LineStyle
[_plot_candle_fill] :: PlotCandle x y -> Bool
[_plot_candle_rise_fill_style] :: PlotCandle x y -> FillStyle
[_plot_candle_fall_fill_style] :: PlotCandle x y -> FillStyle
[_plot_candle_tick_length] :: PlotCandle x y -> Double
[_plot_candle_width] :: PlotCandle x y -> Double
[_plot_candle_centre] :: PlotCandle x y -> Double
[_plot_candle_values] :: PlotCandle x y -> [Candle x y]

-- | A Value holding price intervals for a given x-coord. An alternative
--   view is that these are statistical intervals: the 0th, 25th, 50th,
--   75th, and 100th percentiles.
data Candle x y
Candle :: x -> y -> y -> y -> y -> y -> Candle x y
[candle_x] :: Candle x y -> x
[candle_low] :: Candle x y -> y
[candle_open] :: Candle x y -> y
[candle_mid] :: Candle x y -> y
[candle_close] :: Candle x y -> y
[candle_high] :: Candle x y -> y
plot_candle_title :: forall x_aw4O y_aw4P. Lens' (PlotCandle x_aw4O y_aw4P) String
plot_candle_line_style :: forall x_aw4O y_aw4P. Lens' (PlotCandle x_aw4O y_aw4P) LineStyle
plot_candle_tick_length :: forall x_aw4O y_aw4P. Lens' (PlotCandle x_aw4O y_aw4P) Double
plot_candle_width :: forall x_aw4O y_aw4P. Lens' (PlotCandle x_aw4O y_aw4P) Double
plot_candle_centre :: forall x_aw4O y_aw4P. Lens' (PlotCandle x_aw4O y_aw4P) Double
plot_candle_fill :: forall x_aw4O y_aw4P. Lens' (PlotCandle x_aw4O y_aw4P) Bool
plot_candle_rise_fill_style :: forall x_aw4O y_aw4P. Lens' (PlotCandle x_aw4O y_aw4P) FillStyle
plot_candle_fall_fill_style :: forall x_aw4O y_aw4P. Lens' (PlotCandle x_aw4O y_aw4P) FillStyle
plot_candle_values :: forall x_aw4O y_aw4P x_awiD y_awiE. Lens (PlotCandle x_aw4O y_aw4P) (PlotCandle x_awiD y_awiE) [Candle x_aw4O y_aw4P] [Candle x_awiD y_awiE]
instance (GHC.Show.Show x, GHC.Show.Show y) => GHC.Show.Show (Graphics.Rendering.Chart.Plot.Candle.Candle x y)
instance Graphics.Rendering.Chart.Plot.Types.ToPlot Graphics.Rendering.Chart.Plot.Candle.PlotCandle
instance Data.Default.Class.Default (Graphics.Rendering.Chart.Plot.Candle.PlotCandle x y)

-- | Non chart specific utility functions.
module Graphics.Rendering.Chart.Utils

-- | Checks if the given value is and actual numeric value and not a
--   concept like NaN or infinity.
isValidNumber :: RealFloat a => a -> Bool

-- | Version of maybe that returns a monadic value.
maybeM :: Monad m => b -> (a -> m b) -> Maybe a -> m b

-- | This module contains the definition of the Renderable type,
--   which is a composable drawing element, along with assorted functions
--   to them.
module Graphics.Rendering.Chart.Renderable

-- | A Renderable is a record of functions required to layout a graphic
--   element.
data Renderable a
Renderable :: BackendProgram RectSize -> (RectSize -> BackendProgram (PickFn a)) -> Renderable a

-- | Calculate the minimum size of the renderable.
[minsize] :: Renderable a -> BackendProgram RectSize

-- | Draw the renderable with a rectangle, which covers the origin to a
--   given point.
--   
--   The resulting "pick" function maps a point in the image to a value.
[render] :: Renderable a -> RectSize -> BackendProgram (PickFn a)

-- | A type class abtracting the conversion of a value to a Renderable.
class ToRenderable a
toRenderable :: ToRenderable a => a -> Renderable ()

-- | A function that maps a point in device coordinates to some value.
--   
--   Perhaps it might be generalised from Maybe a to (MonadPlus m ) => m
--   a in the future.
type PickFn a = Point -> Maybe a
data Rectangle
Rectangle :: RectSize -> Maybe FillStyle -> Maybe LineStyle -> RectCornerStyle -> Rectangle
[_rect_minsize] :: Rectangle -> RectSize
[_rect_fillStyle] :: Rectangle -> Maybe FillStyle
[_rect_lineStyle] :: Rectangle -> Maybe LineStyle
[_rect_cornerStyle] :: Rectangle -> RectCornerStyle
data RectCornerStyle
RCornerSquare :: RectCornerStyle
RCornerBevel :: Double -> RectCornerStyle
RCornerRounded :: Double -> RectCornerStyle
rectangleToRenderable :: Rectangle -> Renderable a

-- | Draw the specified rectangle such that its top-left vertex is placed
--   at the given position
drawRectangle :: Point -> Rectangle -> BackendProgram (PickFn a)

-- | Overlay a renderable over a solid background fill.
fillBackground :: FillStyle -> Renderable a -> Renderable a

-- | Add some spacing at the edges of a renderable.
addMargins :: (Double, Double, Double, Double) -> Renderable a -> Renderable a
emptyRenderable :: Renderable a

-- | Helper function for using a renderable, when we generate it in the
--   BackendProgram monad.
embedRenderable :: BackendProgram (Renderable a) -> Renderable a

-- | Construct a renderable from a text string, aligned with the axes.
label :: FontStyle -> HTextAnchor -> VTextAnchor -> String -> Renderable String

-- | Construct a renderable from a text string, rotated wrt to axes. The
--   angle of rotation is in degrees, measured clockwise from the
--   horizontal.
rlabel :: FontStyle -> HTextAnchor -> VTextAnchor -> Double -> String -> Renderable String

-- | Create a blank renderable with a specified minimum size.
spacer :: RectSize -> Renderable a

-- | Create a blank renderable with a minimum size the same as some other
--   renderable.
spacer1 :: Renderable a -> Renderable b

-- | Replace the pick function of a renderable with another.
setPickFn :: PickFn b -> Renderable a -> Renderable b

-- | Map a function over the result of a renderable's pickfunction, keeping
--   only Just results.
mapMaybePickFn :: (a -> Maybe b) -> Renderable a -> Renderable b

-- | Map a function over result of a renderable's pickfunction.
mapPickFn :: (a -> b) -> Renderable a -> Renderable b
nullPickFn :: PickFn a
rect_minsize :: Lens' Rectangle RectSize
rect_fillStyle :: Lens' Rectangle (Maybe FillStyle)
rect_lineStyle :: Lens' Rectangle (Maybe LineStyle)
rect_cornerStyle :: Lens' Rectangle RectCornerStyle
instance GHC.Base.Functor Graphics.Rendering.Chart.Renderable.Renderable
instance Data.Default.Class.Default Graphics.Rendering.Chart.Renderable.Rectangle
instance Graphics.Rendering.Chart.Renderable.ToRenderable Graphics.Rendering.Chart.Renderable.Rectangle
instance Graphics.Rendering.Chart.Renderable.ToRenderable (Graphics.Rendering.Chart.Renderable.Renderable a)

-- | Sparklines are mini graphs inspired by Edward Tufte; see
--   http://www.edwardtufte.com/bboard/q-and-a-fetch-msg?msg_id=0001OR
--   and http://en.wikipedia.org/wiki/Sparkline for more
--   information.
--   
--   The original implementation (by Hitesh Jasani) used the gd package as
--   a backend renderer, and is still available at
--   http://hackage.haskell.org/package/hsparklines.
--   
--   The present version integrates with the Chart package, in the sense
--   that Sparklines are just another kind of (ToRenderable a =>
--   a), so they can be composed into grids and used with the rest of
--   Chart.
--   
--   
--   dp :: [Double]
--   dp = [24,21,32.3,24,15,34,43,55,57,72,74,75,73,72,55,44]
--   
--   sl = SparkLine barSpark dp
--   fopts = FileOptions (sparkSize sl) PNG
--   renderableToFile fopts (sparkLineToRenderable sl) "bar_spark.png" 
--   
module Graphics.Rendering.Chart.SparkLine

-- | A sparkline is a single sequence of data values, treated as y-values.
--   The x-values are anonymous and implicit in the sequence.
data SparkLine
SparkLine :: SparkOptions -> [Double] -> SparkLine
[sl_options] :: SparkLine -> SparkOptions
[sl_data] :: SparkLine -> [Double]

-- | Options to render the sparklines in different ways.
data SparkOptions
SparkOptions :: Bool -> Int -> Int -> (Double, Double) -> Colour Double -> Colour Double -> Colour Double -> Colour Double -> Bool -> Bool -> Bool -> SparkOptions

-- | smooth or bars
[so_smooth] :: SparkOptions -> Bool

-- | step size
[so_step] :: SparkOptions -> Int

-- | graph height (pixels)
[so_height] :: SparkOptions -> Int

-- | data point limits
[so_limits] :: SparkOptions -> (Double, Double)

-- | background color
[so_bgColor] :: SparkOptions -> Colour Double

-- | color of minimum datapoint
[so_minColor] :: SparkOptions -> Colour Double

-- | color of maximum datapoint
[so_maxColor] :: SparkOptions -> Colour Double

-- | color of last datapoint
[so_lastColor] :: SparkOptions -> Colour Double

-- | display minimum marker
[so_minMarker] :: SparkOptions -> Bool

-- | display maximum marker
[so_maxMarker] :: SparkOptions -> Bool

-- | display last marker
[so_lastMarker] :: SparkOptions -> Bool

-- | Default options for a smooth sparkline.
smoothSpark :: SparkOptions

-- | Default options for a barchart sparkline.
barSpark :: SparkOptions

-- | Return the width and height of the SparkLine.
sparkSize :: SparkLine -> (Int, Int)

-- | Render a SparkLine to a drawing surface.
renderSparkLine :: SparkLine -> BackendProgram (PickFn ())

-- | Create a renderable from a SparkLine.
sparkLineToRenderable :: SparkLine -> Renderable ()

-- | Compute the width of a SparkLine, for rendering purposes.
sparkWidth :: SparkLine -> Int
instance GHC.Show.Show Graphics.Rendering.Chart.SparkLine.SparkOptions
instance Graphics.Rendering.Chart.Renderable.ToRenderable Graphics.Rendering.Chart.SparkLine.SparkLine

-- | Show textual annotations on a chart.
module Graphics.Rendering.Chart.Plot.Annotation

-- | Value for describing a series of text annotations to be placed at
--   arbitrary points on the graph. Annotations can be rotated and styled.
data PlotAnnotation x y
PlotAnnotation :: HTextAnchor -> VTextAnchor -> Double -> FontStyle -> Rectangle -> [(x, y, String)] -> PlotAnnotation x y
[_plot_annotation_hanchor] :: PlotAnnotation x y -> HTextAnchor
[_plot_annotation_vanchor] :: PlotAnnotation x y -> VTextAnchor

-- | Angle, in degrees, to rotate the annotation about the anchor point.
[_plot_annotation_angle] :: PlotAnnotation x y -> Double
[_plot_annotation_style] :: PlotAnnotation x y -> FontStyle

-- | Rectangle which style determines the background of the annotation text
--   and which _rect_minsize determines the additional width and
--   height of the background area
[_plot_annotation_background] :: PlotAnnotation x y -> Rectangle
[_plot_annotation_values] :: PlotAnnotation x y -> [(x, y, String)]
plot_annotation_hanchor :: forall x_aBP8 y_aBP9. Lens' (PlotAnnotation x_aBP8 y_aBP9) HTextAnchor
plot_annotation_vanchor :: forall x_aBP8 y_aBP9. Lens' (PlotAnnotation x_aBP8 y_aBP9) VTextAnchor
plot_annotation_angle :: forall x_aBP8 y_aBP9. Lens' (PlotAnnotation x_aBP8 y_aBP9) Double
plot_annotation_style :: forall x_aBP8 y_aBP9. Lens' (PlotAnnotation x_aBP8 y_aBP9) FontStyle
plot_annotation_background :: forall x_aBP8 y_aBP9. Lens' (PlotAnnotation x_aBP8 y_aBP9) Rectangle
plot_annotation_values :: forall x_aBP8 y_aBP9 x_aCkk y_aCkl. Lens (PlotAnnotation x_aBP8 y_aBP9) (PlotAnnotation x_aCkk y_aCkl) [(x_aBP8, y_aBP9, String)] [(x_aCkk, y_aCkl, String)]
instance Graphics.Rendering.Chart.Plot.Types.ToPlot Graphics.Rendering.Chart.Plot.Annotation.PlotAnnotation
instance Data.Default.Class.Default (Graphics.Rendering.Chart.Plot.Annotation.PlotAnnotation x y)

-- | A container type for values that can be composed by horizonal and
--   vertical layout.
module Graphics.Rendering.Chart.Grid

-- | Abstract datatype representing a grid.
data Grid a
type Span = (Int, Int)

-- | When more space is available for an item than the total width of
--   items, extra added space is proportional to 'space weight'.
type SpaceWeight = (Double, Double)

-- | A 1x1 grid from a given value, with no extra space.
tval :: a -> Grid a

-- | A WxH (measured in cells) grid from a given value, with space weight
--   (1,1).
tspan :: a -> Span -> Grid a

-- | A 1x1 empty grid.
empty :: Grid a

-- | A 0x0 empty grid.
nullt :: Grid a

-- | A synonym for beside.
(.|.) :: Grid a -> Grid a -> Grid a

-- | A synonym for above.
(./.) :: Grid a -> Grid a -> Grid a
above :: Grid a -> Grid a -> Grid a
aboveN :: [Grid a] -> Grid a
beside :: Grid a -> Grid a -> Grid a
besideN :: [Grid a] -> Grid a

-- | One grid over the other. The first argument is shallow, the second is
--   deep.
overlay :: Grid a -> Grid a -> Grid a
width :: Grid a -> Int
height :: Grid a -> Int
gridToRenderable :: Grid (Renderable a) -> Renderable a

-- | Sets the space weight of *every* cell of the grid to given value.
weights :: SpaceWeight -> Grid a -> Grid a

-- | A value placed below the grid, occupying 1 row with the same
--   horizontal span as the grid.
aboveWide :: Grid a -> a -> Grid a

-- | A value occupying 1 row with the same horizontal span as the grid.
wideAbove :: a -> Grid a -> Grid a

-- | A value placed to the left of the grid, occupying 1 column with the
--   same vertical span as the grid.
tallBeside :: a -> Grid a -> Grid a

-- | A value placed to the right of the grid, occupying 1 column with the
--   same vertical span as the grid.
besideTall :: Grid a -> a -> Grid a

-- | A value placed under a grid, with the same span as the grid.
fullOverlayUnder :: a -> Grid a -> Grid a

-- | A value placed over a grid, with the same span as the grid.
fullOverlayOver :: a -> Grid a -> Grid a
instance GHC.Show.Show a => GHC.Show.Show (Graphics.Rendering.Chart.Grid.Grid a)
instance GHC.Base.Functor Graphics.Rendering.Chart.Grid.Grid
instance Graphics.Rendering.Chart.Renderable.ToRenderable a => Graphics.Rendering.Chart.Renderable.ToRenderable (Graphics.Rendering.Chart.Grid.Grid a)

-- | A basic pie chart.
--   
--   Pie charts are handled different to other plots, in that they have
--   their own layout, and can't be composed with other plots. A pie chart
--   is rendered with code in the following form:
--   
--   
--   values :: [PieItem]
--   values = [...]
--   layout :: PieLayout
--   layout = pie_plot ^: pie_data ^= values
--          $ def
--   renderable = toRenderable layout
--   
module Graphics.Rendering.Chart.Plot.Pie
data PieLayout
PieLayout :: String -> FontStyle -> PieChart -> FillStyle -> Double -> PieLayout
[_pie_title] :: PieLayout -> String
[_pie_title_style] :: PieLayout -> FontStyle
[_pie_plot] :: PieLayout -> PieChart
[_pie_background] :: PieLayout -> FillStyle
[_pie_margin] :: PieLayout -> Double
data PieChart
PieChart :: [PieItem] -> [AlphaColour Double] -> FontStyle -> LineStyle -> Double -> PieChart
[_pie_data] :: PieChart -> [PieItem]
[_pie_colors] :: PieChart -> [AlphaColour Double]
[_pie_label_style] :: PieChart -> FontStyle
[_pie_label_line_style] :: PieChart -> LineStyle
[_pie_start_angle] :: PieChart -> Double
data PieItem
PieItem :: String -> Double -> Double -> PieItem
[_pitem_label] :: PieItem -> String
[_pitem_offset] :: PieItem -> Double
[_pitem_value] :: PieItem -> Double
pieToRenderable :: PieLayout -> Renderable (PickFn a)
pieChartToRenderable :: PieChart -> Renderable (PickFn a)
pie_title :: Lens' PieLayout String
pie_title_style :: Lens' PieLayout FontStyle
pie_plot :: Lens' PieLayout PieChart
pie_background :: Lens' PieLayout FillStyle
pie_margin :: Lens' PieLayout Double
pie_data :: Lens' PieChart [PieItem]
pie_colors :: Lens' PieChart [AlphaColour Double]
pie_label_style :: Lens' PieChart FontStyle
pie_label_line_style :: Lens' PieChart LineStyle
pie_start_angle :: Lens' PieChart Double
pitem_label :: Lens' PieItem String
pitem_offset :: Lens' PieItem Double
pitem_value :: Lens' PieItem Double
instance Data.Default.Class.Default Graphics.Rendering.Chart.Plot.Pie.PieLayout
instance Graphics.Rendering.Chart.Renderable.ToRenderable Graphics.Rendering.Chart.Plot.Pie.PieLayout
instance Data.Default.Class.Default Graphics.Rendering.Chart.Plot.Pie.PieChart
instance Graphics.Rendering.Chart.Renderable.ToRenderable Graphics.Rendering.Chart.Plot.Pie.PieChart
instance Data.Default.Class.Default Graphics.Rendering.Chart.Plot.Pie.PieItem

-- | Types and functions for handling the legend(s) on a chart. A legend is
--   an area on the chart used to label the plotted values.
module Graphics.Rendering.Chart.Legend
data Legend x y
Legend :: LegendStyle -> [(String, Rect -> BackendProgram ())] -> Legend x y
data LegendStyle
LegendStyle :: FontStyle -> Double -> Double -> LegendOrientation -> LegendPosition -> LegendStyle
[_legend_label_style] :: LegendStyle -> FontStyle
[_legend_margin] :: LegendStyle -> Double
[_legend_plot_size] :: LegendStyle -> Double
[_legend_orientation] :: LegendStyle -> LegendOrientation
[_legend_position] :: LegendStyle -> LegendPosition

-- | Legends can be constructed in two orientations: in rows (where we
--   specify the maximum number of columns), and in columns (where we
--   specify the maximum number of rows)
data LegendOrientation
LORows :: Int -> LegendOrientation
LOCols :: Int -> LegendOrientation

-- | Defines the position of the legend, relative to the plot.
data LegendPosition
LegendAbove :: LegendPosition
LegendBelow :: LegendPosition
LegendRight :: LegendPosition
LegendLeft :: LegendPosition
legendToRenderable :: Legend x y -> Renderable String
legend_label_style :: Lens' LegendStyle FontStyle
legend_margin :: Lens' LegendStyle Double
legend_plot_size :: Lens' LegendStyle Double
legend_orientation :: Lens' LegendStyle LegendOrientation
legend_position :: Lens' LegendStyle LegendPosition
instance Graphics.Rendering.Chart.Renderable.ToRenderable (Graphics.Rendering.Chart.Legend.Legend x y)
instance Data.Default.Class.Default Graphics.Rendering.Chart.Legend.LegendStyle

-- | Type definitions for Axes
module Graphics.Rendering.Chart.Axis.Types

-- | The basic data associated with an axis showing values of type x.
data AxisData x
AxisData :: AxisVisibility -> (Range -> x -> Double) -> (Range -> Double -> x) -> [(x, Double)] -> [[(x, String)]] -> [x] -> AxisData x

-- | Which parts of the axis shall be displayed.
[_axis_visibility] :: AxisData x -> AxisVisibility

-- | The _axis_viewport function maps values into device coordinates.
[_axis_viewport] :: AxisData x -> Range -> x -> Double

-- | The _axis_tropweiv function maps device coordinates back to values.
[_axis_tropweiv] :: AxisData x -> Range -> Double -> x

-- | The tick marks on the axis as pairs. The first element is the position
--   on the axis (in viewport units) and the second element is the length
--   of the tick in output coordinates. The tick starts on the axis, and
--   positive numbers are drawn towards the plot area.
[_axis_ticks] :: AxisData x -> [(x, Double)]

-- | The labels on an axis as pairs. The first element of the pair is the
--   position on the axis (in viewport units) and the second is the label
--   text string. Note that multiple sets of labels can be specified, and
--   are shown successively further away from the axis line.
[_axis_labels] :: AxisData x -> [[(x, String)]]

-- | The positions on the axis (in viewport units) where we want to show
--   grid lines.
[_axis_grid] :: AxisData x -> [x]

-- | Configures whick visual elements of a axis are shown at the
--   appropriate edge of a plot area.
data AxisVisibility
AxisVisibility :: Bool -> Bool -> Bool -> AxisVisibility

-- | Whether to display a line along the axis.
[_axis_show_line] :: AxisVisibility -> Bool

-- | Whether to display the tick marks.
[_axis_show_ticks] :: AxisVisibility -> Bool

-- | Whether to display the labels.
[_axis_show_labels] :: AxisVisibility -> Bool

-- | Collect the information we need to render an axis. The bool is true if
--   the axis direction is reversed.
data AxisT x
AxisT :: RectEdge -> AxisStyle -> Bool -> AxisData x -> AxisT x

-- | Control values for how an axis gets displayed.
data AxisStyle
AxisStyle :: LineStyle -> FontStyle -> LineStyle -> Double -> AxisStyle

-- | LineStyle to use for axis line and ticks.
[_axis_line_style] :: AxisStyle -> LineStyle

-- | FontStyle to use for axis labels.
[_axis_label_style] :: AxisStyle -> FontStyle

-- | LineStyle to use for axis grid.
[_axis_grid_style] :: AxisStyle -> LineStyle

-- | How far the labels are to be drawn from the axis.
[_axis_label_gap] :: AxisStyle -> Double

-- | A typeclass abstracting the functions we need to be able to plot
--   against an axis of type a
class Ord a => PlotValue a
toValue :: PlotValue a => a -> Double
fromValue :: PlotValue a => Double -> a
autoAxis :: PlotValue a => AxisFn a

-- | A function to generate the axis data, given the data values to be
--   plotted against it.
type AxisFn x = [x] -> AxisData x

-- | The default LineStyle of an axis.
defaultAxisLineStyle :: LineStyle

-- | The default LineStyle of a plot area grid.
defaultGridLineStyle :: LineStyle

-- | Construct an axis given the positions for ticks, grid lines, and
--   labels, and the labelling function
makeAxis :: PlotValue x => ([x] -> [String]) -> ([x], [x], [x]) -> AxisData x

-- | Construct an axis given the positions for ticks, grid lines, and
--   labels, and the positioning and labelling functions
makeAxis' :: Ord x => (x -> Double) -> (Double -> x) -> ([x] -> [String]) -> ([x], [x], [x]) -> AxisData x

-- | Construct a renderable from an axis, in order that it can be composed
--   with other renderables and drawn. This does not include the drawing of
--   the grid, which must be done separately by the renderAxisGrid
--   function.
axisToRenderable :: AxisT x -> Renderable x
renderAxisGrid :: RectSize -> AxisT z -> BackendProgram ()

-- | Calculate the amount by which the labels extend beyond the ends of the
--   axis.
axisOverhang :: Ord x => AxisT x -> BackendProgram (Double, Double)

-- | A linear mapping of points in one range to another.
vmap :: PlotValue x => (x, x) -> Range -> x -> Double

-- | The inverse mapping from device co-ordinate range back to interesting
--   values.
invmap :: PlotValue x => (x, x) -> Range -> Double -> x

-- | A linear mapping of points in one range to another.
linMap :: (a -> Double) -> (a, a) -> Range -> a -> Double

-- | An inverse linear mapping of points from one range to another.
invLinMap :: (Double -> a) -> (a -> Double) -> (a, a) -> Range -> Double -> a

-- | Modifier to position grid lines to line up with the ticks
axisGridAtTicks :: AxisData x -> AxisData x

-- | Modifier to position grid lines to line up with only the major ticks
axisGridAtBigTicks :: AxisData x -> AxisData x

-- | Modifier to position grid lines to line up with the labels
axisGridAtLabels :: AxisData x -> AxisData x

-- | Modifier to remove grid lines from an axis
axisGridHide :: AxisData x -> AxisData x

-- | Modifier to change labels on an axis
axisLabelsOverride :: [(x, String)] -> AxisData x -> AxisData x
axis_show_line :: Lens' AxisVisibility Bool
axis_show_ticks :: Lens' AxisVisibility Bool
axis_show_labels :: Lens' AxisVisibility Bool
axis_visibility :: forall x_aLKJ. Lens' (AxisData x_aLKJ) AxisVisibility
axis_viewport :: forall x_aLKJ. Lens' (AxisData x_aLKJ) (Range -> x_aLKJ -> Double)
axis_tropweiv :: forall x_aLKJ. Lens' (AxisData x_aLKJ) (Range -> Double -> x_aLKJ)
axis_ticks :: forall x_aLKJ. Lens' (AxisData x_aLKJ) [(x_aLKJ, Double)]
axis_labels :: forall x_aLKJ. Lens' (AxisData x_aLKJ) [[(x_aLKJ, String)]]
axis_grid :: forall x_aLKJ. Lens' (AxisData x_aLKJ) [x_aLKJ]
axis_line_style :: Lens' AxisStyle LineStyle
axis_label_style :: Lens' AxisStyle FontStyle
axis_grid_style :: Lens' AxisStyle LineStyle
axis_label_gap :: Lens' AxisStyle Double
instance Data.Default.Class.Default Graphics.Rendering.Chart.Axis.Types.AxisStyle
instance Data.Default.Class.Default Graphics.Rendering.Chart.Axis.Types.AxisVisibility

-- | Calculate and render unit indexed axes
module Graphics.Rendering.Chart.Axis.Unit
unitAxis :: AxisData ()
instance Graphics.Rendering.Chart.Axis.Types.PlotValue ()

-- | Calculate and render time axes
module Graphics.Rendering.Chart.Axis.Time

-- | TimeSeq is a (potentially infinite) set of times. When passed a
--   reference time, the function returns a a pair of lists. The first
--   contains all times in the set less than the reference time in
--   decreasing order. The second contains all times in the set greater
--   than or equal to the reference time, in increasing order.
type TimeSeq = UTCTime -> ([UTCTime], [UTCTime])

-- | How to display a time
type TimeLabelFn = UTCTime -> String
data TimeLabelAlignment
UnderTicks :: TimeLabelAlignment
BetweenTicks :: TimeLabelAlignment

-- | A typeclass abstracting the functions we need to be able to plot
--   against an axis of time type d.
class TimeValue t
utctimeFromTV :: TimeValue t => t -> UTCTime
tvFromUTCTime :: TimeValue t => UTCTime -> t
doubleFromTimeValue :: TimeValue t => t -> Double
timeValueFromDouble :: TimeValue t => Double -> t

-- | Create an AxisFn to for a time axis.
--   
--   The values to be plotted against this axis can be created with
--   doubleFromLocalTime.
--   
--   Implementation detail: PlotValue constraint is needed to use
--   vmap.
timeValueAxis :: TimeValue t => TimeSeq -> TimeSeq -> TimeLabelFn -> TimeLabelAlignment -> TimeSeq -> TimeLabelFn -> TimeLabelAlignment -> AxisFn t

-- | Automatically choose a suitable time axis, based upon the time range
--   of data. The values to be plotted against this axis can be created
--   with doubleFromTimeValue.
autoTimeValueAxis :: TimeValue t => AxisFn t

-- | A TimeSeq for calendar days.
days :: TimeSeq

-- | A TimeSeq for calendar months.
months :: TimeSeq

-- | A TimeSeq for calendar years.
years :: TimeSeq
instance GHC.Show.Show Graphics.Rendering.Chart.Axis.Time.TimeLabelAlignment
instance Graphics.Rendering.Chart.Axis.Time.TimeValue Data.Time.Clock.Internal.UTCTime.UTCTime
instance Graphics.Rendering.Chart.Axis.Time.TimeValue Data.Time.Calendar.Days.Day
instance Graphics.Rendering.Chart.Axis.Time.TimeValue Data.Time.LocalTime.Internal.LocalTime.LocalTime
instance Graphics.Rendering.Chart.Axis.Types.PlotValue Data.Time.LocalTime.Internal.LocalTime.LocalTime
instance Graphics.Rendering.Chart.Axis.Types.PlotValue Data.Time.Clock.Internal.UTCTime.UTCTime
instance Graphics.Rendering.Chart.Axis.Types.PlotValue Data.Time.Calendar.Days.Day

-- | Calculate and render time axes

-- | Deprecated: Use Graphics.Rendering.Chart.Axis.Time module
module Graphics.Rendering.Chart.Axis.LocalTime

-- | TimeSeq is a (potentially infinite) set of times. When passed a
--   reference time, the function returns a a pair of lists. The first
--   contains all times in the set less than the reference time in
--   decreasing order. The second contains all times in the set greater
--   than or equal to the reference time, in increasing order.
type TimeSeq = LocalTime -> ([LocalTime], [LocalTime])

-- | How to display a time
type TimeLabelFn = LocalTime -> String
data TimeLabelAlignment
UnderTicks :: TimeLabelAlignment
BetweenTicks :: TimeLabelAlignment

-- | Create an AxisFn to for a time axis.
--   
--   The values to be plotted against this axis can be created with
--   doubleFromLocalTime.
timeAxis :: TimeSeq -> TimeSeq -> TimeLabelFn -> TimeLabelAlignment -> TimeSeq -> TimeLabelFn -> TimeLabelAlignment -> AxisFn LocalTime

-- | Automatically choose a suitable time axis, based upon the time range
--   of data. The values to be plotted against this axis can be created
--   with doubleFromLocalTime.
autoTimeAxis :: AxisFn LocalTime

-- | A TimeSeq for calendar days.
days :: TimeSeq

-- | A TimeSeq for calendar months.
months :: TimeSeq

-- | A TimeSeq for calendar years.
years :: TimeSeq

-- | Map a LocalTime value to a plot coordinate.
doubleFromLocalTime :: LocalTime -> Double
instance GHC.Show.Show Graphics.Rendering.Chart.Axis.LocalTime.TimeLabelAlignment

-- | Calculate and render indexed axes
module Graphics.Rendering.Chart.Axis.Indexed

-- | Type for capturing values plotted by index number (ie position in a
--   list) rather than a numerical value.
newtype PlotIndex
PlotIndex :: Int -> PlotIndex
[plotindex_i] :: PlotIndex -> Int

-- | Create an axis for values indexed by position. The list of strings are
--   the labels to be used.
autoIndexAxis :: Integral i => [String] -> [i] -> AxisData i

-- | Augment a list of values with index numbers for plotting.
addIndexes :: [a] -> [(PlotIndex, a)]
instance GHC.Show.Show Graphics.Rendering.Chart.Axis.Indexed.PlotIndex
instance GHC.Real.Integral Graphics.Rendering.Chart.Axis.Indexed.PlotIndex
instance GHC.Real.Real Graphics.Rendering.Chart.Axis.Indexed.PlotIndex
instance GHC.Num.Num Graphics.Rendering.Chart.Axis.Indexed.PlotIndex
instance GHC.Enum.Enum Graphics.Rendering.Chart.Axis.Indexed.PlotIndex
instance GHC.Classes.Ord Graphics.Rendering.Chart.Axis.Indexed.PlotIndex
instance GHC.Classes.Eq Graphics.Rendering.Chart.Axis.Indexed.PlotIndex
instance Graphics.Rendering.Chart.Axis.Types.PlotValue Graphics.Rendering.Chart.Axis.Indexed.PlotIndex

-- | Calculate and render floating value axes including doubles with
--   linear, log, and percentage scaling.
module Graphics.Rendering.Chart.Axis.Floating

-- | A wrapper class for doubles used to indicate they are to be plotted
--   against a percentage axis.
newtype Percent
Percent :: Double -> Percent
[unPercent] :: Percent -> Double
data LinearAxisParams a
LinearAxisParams :: ([a] -> [String]) -> Int -> Int -> LinearAxisParams a

-- | The function used to show the axes labels.
[_la_labelf] :: LinearAxisParams a -> [a] -> [String]

-- | The target number of labels to be shown.
[_la_nLabels] :: LinearAxisParams a -> Int

-- | The target number of ticks to be shown.
[_la_nTicks] :: LinearAxisParams a -> Int

-- | A wrapper class for doubles used to indicate they are to be plotted
--   against a log axis.
newtype LogValue
LogValue :: Double -> LogValue
data LogAxisParams a
LogAxisParams :: ([a] -> [String]) -> LogAxisParams a

-- | The function used to show the axes labels.
[_loga_labelf] :: LogAxisParams a -> [a] -> [String]

-- | Generate a linear axis with the specified bounds
scaledAxis :: RealFloat a => LinearAxisParams a -> (a, a) -> AxisFn a

-- | Generate a linear axis automatically, scaled appropriately for the
--   input data.
autoScaledAxis :: RealFloat a => LinearAxisParams a -> AxisFn a

-- | Generate a log axis automatically, scaled appropriate for the input
--   data.
autoScaledLogAxis :: RealFloat a => LogAxisParams a -> AxisFn a

-- | Given a target number of values, and a list of input points, find
--   evenly spaced values from the set {1*X, 2*X, 2.5*X, 5*X} (where X is
--   some power of ten) that evenly cover the input points.
autoSteps :: Int -> [Double] -> [Double]
la_labelf :: forall a_aXmQ a_aYXC. Lens (LinearAxisParams a_aXmQ) (LinearAxisParams a_aYXC) ([a_aXmQ] -> [String]) ([a_aYXC] -> [String])
la_nLabels :: forall a_aXmQ. Lens' (LinearAxisParams a_aXmQ) Int
la_nTicks :: forall a_aXmQ. Lens' (LinearAxisParams a_aXmQ) Int
loga_labelf :: forall a_aXmP a_aYZu. Iso (LogAxisParams a_aXmP) (LogAxisParams a_aYZu) ([a_aXmP] -> [String]) ([a_aYZu] -> [String])
instance GHC.Float.RealFloat Graphics.Rendering.Chart.Axis.Floating.LogValue
instance GHC.Float.Floating Graphics.Rendering.Chart.Axis.Floating.LogValue
instance GHC.Real.RealFrac Graphics.Rendering.Chart.Axis.Floating.LogValue
instance GHC.Real.Fractional Graphics.Rendering.Chart.Axis.Floating.LogValue
instance GHC.Real.Real Graphics.Rendering.Chart.Axis.Floating.LogValue
instance GHC.Num.Num Graphics.Rendering.Chart.Axis.Floating.LogValue
instance GHC.Classes.Ord Graphics.Rendering.Chart.Axis.Floating.LogValue
instance GHC.Classes.Eq Graphics.Rendering.Chart.Axis.Floating.LogValue
instance GHC.Float.RealFloat Graphics.Rendering.Chart.Axis.Floating.Percent
instance GHC.Float.Floating Graphics.Rendering.Chart.Axis.Floating.Percent
instance GHC.Real.RealFrac Graphics.Rendering.Chart.Axis.Floating.Percent
instance GHC.Real.Fractional Graphics.Rendering.Chart.Axis.Floating.Percent
instance GHC.Real.Real Graphics.Rendering.Chart.Axis.Floating.Percent
instance GHC.Num.Num Graphics.Rendering.Chart.Axis.Floating.Percent
instance GHC.Classes.Ord Graphics.Rendering.Chart.Axis.Floating.Percent
instance GHC.Classes.Eq Graphics.Rendering.Chart.Axis.Floating.Percent
instance (GHC.Show.Show a, GHC.Float.RealFloat a) => Data.Default.Class.Default (Graphics.Rendering.Chart.Axis.Floating.LogAxisParams a)
instance (GHC.Show.Show a, GHC.Float.RealFloat a) => Data.Default.Class.Default (Graphics.Rendering.Chart.Axis.Floating.LinearAxisParams a)
instance GHC.Show.Show Graphics.Rendering.Chart.Axis.Floating.LogValue
instance Graphics.Rendering.Chart.Axis.Types.PlotValue Graphics.Rendering.Chart.Axis.Floating.LogValue
instance GHC.Show.Show Graphics.Rendering.Chart.Axis.Floating.Percent
instance Graphics.Rendering.Chart.Axis.Types.PlotValue Graphics.Rendering.Chart.Axis.Floating.Percent
instance Graphics.Rendering.Chart.Axis.Types.PlotValue GHC.Types.Double
instance Graphics.Rendering.Chart.Axis.Types.PlotValue GHC.Types.Float

-- | Calculate and render integer indexed axes
module Graphics.Rendering.Chart.Axis.Int
defaultIntAxis :: Show a => LinearAxisParams a
scaledIntAxis :: (Integral i, PlotValue i) => LinearAxisParams i -> (i, i) -> AxisFn i
autoScaledIntAxis :: (Integral i, PlotValue i) => LinearAxisParams i -> AxisFn i
instance Graphics.Rendering.Chart.Axis.Types.PlotValue GHC.Types.Int
instance Graphics.Rendering.Chart.Axis.Types.PlotValue GHC.Integer.Type.Integer

-- | Code to calculate and render axes.
module Graphics.Rendering.Chart.Axis

-- | Vector plots
module Graphics.Rendering.Chart.Plot.Vectors
data PlotVectors x y
PlotVectors :: String -> VectorStyle -> Double -> [(x, y)] -> ((x, y) -> (x, y)) -> [((x, y), (x, y))] -> PlotVectors x y
[_plot_vectors_title] :: PlotVectors x y -> String
[_plot_vectors_style] :: PlotVectors x y -> VectorStyle

-- | Set to 1 (default) to normalize the length of vectors to a space
--   between them (so that the vectors never overlap on the graph). Set to
--   0 to disable any scaling. Values in between 0 and 1 are also permitted
--   to adjust scaling.
[_plot_vectors_scale] :: PlotVectors x y -> Double

-- | Provide a square-tiled regular grid.
[_plot_vectors_grid] :: PlotVectors x y -> [(x, y)]

-- | Provide a vector field (R^2 -> R^2) function.
[_plot_vectors_mapf] :: PlotVectors x y -> (x, y) -> (x, y)

-- | Provide a prepared list of (start,vector) pairs.
[_plot_vectors_values] :: PlotVectors x y -> [((x, y), (x, y))]
data VectorStyle
VectorStyle :: LineStyle -> PointStyle -> VectorStyle
[_vector_line_style] :: VectorStyle -> LineStyle
[_vector_head_style] :: VectorStyle -> PointStyle
plotVectorField :: (PlotValue x, PlotValue y) => PlotVectors x y -> Plot x y
plot_vectors_mapf :: forall x_a15ma y_a15mb. Lens' (PlotVectors x_a15ma y_a15mb) ((x_a15ma, y_a15mb) -> (x_a15ma, y_a15mb))
plot_vectors_grid :: forall x_a15ma y_a15mb. Lens' (PlotVectors x_a15ma y_a15mb) [(x_a15ma, y_a15mb)]
plot_vectors_title :: forall x_a15ma y_a15mb. Lens' (PlotVectors x_a15ma y_a15mb) String
plot_vectors_style :: forall x_a15ma y_a15mb. Lens' (PlotVectors x_a15ma y_a15mb) VectorStyle
plot_vectors_scale :: forall x_a15ma y_a15mb. Lens' (PlotVectors x_a15ma y_a15mb) Double
plot_vectors_values :: forall x_a15ma y_a15mb. Lens' (PlotVectors x_a15ma y_a15mb) [((x_a15ma, y_a15mb), (x_a15ma, y_a15mb))]
vector_line_style :: Lens' VectorStyle LineStyle
vector_head_style :: Lens' VectorStyle PointStyle
instance Data.Default.Class.Default Graphics.Rendering.Chart.Plot.Vectors.VectorStyle
instance Data.Default.Class.Default (Graphics.Rendering.Chart.Plot.Vectors.PlotVectors x y)

-- | Bar Charts
module Graphics.Rendering.Chart.Plot.Bars

-- | Value describing how to plot a set of bars. Note that the input data
--   is typed [(x,[y])], ie for each x value we plot several y values.
--   Typically the size of each [y] list would be the same.
data PlotBars x y
PlotBars :: PlotBarsStyle -> [(FillStyle, Maybe LineStyle)] -> [String] -> PlotBarsSpacing -> PlotBarsAlignment -> y -> Double -> [(x, [y])] -> PlotBars x y

-- | This value specifies whether each value from [y] should be shown
--   beside or above the previous value.
[_plot_bars_style] :: PlotBars x y -> PlotBarsStyle

-- | The style in which to draw each element of [y]. A fill style is
--   required, and if a linestyle is given, each bar will be outlined.
[_plot_bars_item_styles] :: PlotBars x y -> [(FillStyle, Maybe LineStyle)]

-- | The title of each element of [y]. These will be shown in the legend.
[_plot_bars_titles] :: PlotBars x y -> [String]

-- | This value controls how the widths of the bars are calculated. Either
--   the widths of the bars, or the gaps between them can be fixed.
[_plot_bars_spacing] :: PlotBars x y -> PlotBarsSpacing

-- | This value controls how bars for a fixed x are aligned with respect to
--   the device coordinate corresponding to x.
[_plot_bars_alignment] :: PlotBars x y -> PlotBarsAlignment

-- | The starting level for the chart (normally 0).
[_plot_bars_reference] :: PlotBars x y -> y
[_plot_bars_singleton_width] :: PlotBars x y -> Double

-- | The actual points to be plotted.
[_plot_bars_values] :: PlotBars x y -> [(x, [y])]
data PlotBarsStyle

-- | Bars for a fixed x are stacked vertically on top of each other.
BarsStacked :: PlotBarsStyle

-- | Bars for a fixed x are put horizontally beside each other.
BarsClustered :: PlotBarsStyle
data PlotBarsSpacing

-- | All bars have the same width in pixels.
BarsFixWidth :: Double -> PlotBarsSpacing

-- | (BarsFixGap g mw) means make the gaps between the bars equal to g, but
--   with a minimum bar width of mw
BarsFixGap :: Double -> Double -> PlotBarsSpacing

-- | How bars for a given (x,[y]) are aligned with respect to screen
--   coordinate corresponding to x (deviceX).
data PlotBarsAlignment

-- | The left edge of bars is at deviceX
BarsLeft :: PlotBarsAlignment

-- | Bars are centered around deviceX
BarsCentered :: PlotBarsAlignment

-- | The right edge of bars is at deviceX
BarsRight :: PlotBarsAlignment
class PlotValue a => BarsPlotValue a
barsReference :: BarsPlotValue a => a
barsAdd :: BarsPlotValue a => a -> a -> a
plotBars :: BarsPlotValue y => PlotBars x y -> Plot x y
plot_bars_style :: forall x_a17wQ y_a17wR. Lens' (PlotBars x_a17wQ y_a17wR) PlotBarsStyle
plot_bars_item_styles :: forall x_a17wQ y_a17wR. Lens' (PlotBars x_a17wQ y_a17wR) [(FillStyle, Maybe LineStyle)]
plot_bars_titles :: forall x_a17wQ y_a17wR. Lens' (PlotBars x_a17wQ y_a17wR) [String]
plot_bars_spacing :: forall x_a17wQ y_a17wR. Lens' (PlotBars x_a17wQ y_a17wR) PlotBarsSpacing
plot_bars_alignment :: forall x_a17wQ y_a17wR. Lens' (PlotBars x_a17wQ y_a17wR) PlotBarsAlignment
plot_bars_reference :: forall x_a17wQ y_a17wR. Lens' (PlotBars x_a17wQ y_a17wR) y_a17wR
plot_bars_singleton_width :: forall x_a17wQ y_a17wR. Lens' (PlotBars x_a17wQ y_a17wR) Double
plot_bars_values :: forall x_a17wQ y_a17wR x_a17Pp. Lens (PlotBars x_a17wQ y_a17wR) (PlotBars x_a17Pp y_a17wR) [(x_a17wQ, [y_a17wR])] [(x_a17Pp, [y_a17wR])]
instance GHC.Show.Show Graphics.Rendering.Chart.Plot.Bars.PlotBarsAlignment
instance GHC.Show.Show Graphics.Rendering.Chart.Plot.Bars.PlotBarsSpacing
instance GHC.Show.Show Graphics.Rendering.Chart.Plot.Bars.PlotBarsStyle
instance Graphics.Rendering.Chart.Plot.Bars.BarsPlotValue y => Data.Default.Class.Default (Graphics.Rendering.Chart.Plot.Bars.PlotBars x y)
instance Graphics.Rendering.Chart.Plot.Bars.BarsPlotValue GHC.Types.Double
instance Graphics.Rendering.Chart.Plot.Bars.BarsPlotValue GHC.Types.Int

-- | Area spots are a collection of unconnected filled circles, with x,y
--   position, and an independent z value to be represented by the relative
--   area of the spots.
module Graphics.Rendering.Chart.Plot.AreaSpots

-- | A collection of unconnected spots, with x,y position, and an
--   independent z value to be represented by the area of the spot.
data AreaSpots z x y
AreaSpots :: String -> Double -> AlphaColour Double -> Colour Double -> Double -> Double -> [(x, y, z)] -> AreaSpots z x y
[_area_spots_title] :: AreaSpots z x y -> String
[_area_spots_linethick] :: AreaSpots z x y -> Double
[_area_spots_linecolour] :: AreaSpots z x y -> AlphaColour Double
[_area_spots_fillcolour] :: AreaSpots z x y -> Colour Double
[_area_spots_opacity] :: AreaSpots z x y -> Double

-- | the largest size of spot
[_area_spots_max_radius] :: AreaSpots z x y -> Double
[_area_spots_values] :: AreaSpots z x y -> [(x, y, z)]
area_spots_title :: forall z_a1abG x_a1abH y_a1abI. Lens' (AreaSpots z_a1abG x_a1abH y_a1abI) String
area_spots_linethick :: forall z_a1abG x_a1abH y_a1abI. Lens' (AreaSpots z_a1abG x_a1abH y_a1abI) Double
area_spots_linecolour :: forall z_a1abG x_a1abH y_a1abI. Lens' (AreaSpots z_a1abG x_a1abH y_a1abI) (AlphaColour Double)
area_spots_fillcolour :: forall z_a1abG x_a1abH y_a1abI. Lens' (AreaSpots z_a1abG x_a1abH y_a1abI) (Colour Double)
area_spots_opacity :: forall z_a1abG x_a1abH y_a1abI. Lens' (AreaSpots z_a1abG x_a1abH y_a1abI) Double
area_spots_max_radius :: forall z_a1abG x_a1abH y_a1abI. Lens' (AreaSpots z_a1abG x_a1abH y_a1abI) Double
area_spots_values :: forall z_a1abG x_a1abH y_a1abI z_a1azv x_a1azw y_a1azx. Lens (AreaSpots z_a1abG x_a1abH y_a1abI) (AreaSpots z_a1azv x_a1azw y_a1azx) [(x_a1abH, y_a1abI, z_a1abG)] [(x_a1azw, y_a1azx, z_a1azv)]

-- | A collection of unconnected spots, with x,y position, an independent z
--   value to be represented by the area of the spot, and in addition, a
--   fourth variable t to be represented by a colour from a given palette.
--   (A linear transfer function from t to palette is assumed.)
data AreaSpots4D z t x y
AreaSpots4D :: String -> Double -> [Colour Double] -> Double -> Double -> [(x, y, z, t)] -> AreaSpots4D z t x y
[_area_spots_4d_title] :: AreaSpots4D z t x y -> String
[_area_spots_4d_linethick] :: AreaSpots4D z t x y -> Double
[_area_spots_4d_palette] :: AreaSpots4D z t x y -> [Colour Double]
[_area_spots_4d_opacity] :: AreaSpots4D z t x y -> Double

-- | the largest size of spot
[_area_spots_4d_max_radius] :: AreaSpots4D z t x y -> Double
[_area_spots_4d_values] :: AreaSpots4D z t x y -> [(x, y, z, t)]
area_spots_4d_title :: forall z_a1abC t_a1abD x_a1abE y_a1abF. Lens' (AreaSpots4D z_a1abC t_a1abD x_a1abE y_a1abF) String
area_spots_4d_linethick :: forall z_a1abC t_a1abD x_a1abE y_a1abF. Lens' (AreaSpots4D z_a1abC t_a1abD x_a1abE y_a1abF) Double
area_spots_4d_palette :: forall z_a1abC t_a1abD x_a1abE y_a1abF. Lens' (AreaSpots4D z_a1abC t_a1abD x_a1abE y_a1abF) [Colour Double]
area_spots_4d_opacity :: forall z_a1abC t_a1abD x_a1abE y_a1abF. Lens' (AreaSpots4D z_a1abC t_a1abD x_a1abE y_a1abF) Double
area_spots_4d_max_radius :: forall z_a1abC t_a1abD x_a1abE y_a1abF. Lens' (AreaSpots4D z_a1abC t_a1abD x_a1abE y_a1abF) Double
area_spots_4d_values :: forall z_a1abC t_a1abD x_a1abE y_a1abF z_a1aFe t_a1aFf x_a1aFg y_a1aFh. Lens (AreaSpots4D z_a1abC t_a1abD x_a1abE y_a1abF) (AreaSpots4D z_a1aFe t_a1aFf x_a1aFg y_a1aFh) [(x_a1abE, y_a1abF, z_a1abC, t_a1abD)] [(x_a1aFg, y_a1aFh, z_a1aFe, t_a1aFf)]
instance Data.Default.Class.Default (Graphics.Rendering.Chart.Plot.AreaSpots.AreaSpots4D z t x y)
instance (Graphics.Rendering.Chart.Axis.Types.PlotValue z, Graphics.Rendering.Chart.Axis.Types.PlotValue t, GHC.Show.Show t) => Graphics.Rendering.Chart.Plot.Types.ToPlot (Graphics.Rendering.Chart.Plot.AreaSpots.AreaSpots4D z t)
instance Data.Default.Class.Default (Graphics.Rendering.Chart.Plot.AreaSpots.AreaSpots z x y)
instance Graphics.Rendering.Chart.Axis.Types.PlotValue z => Graphics.Rendering.Chart.Plot.Types.ToPlot (Graphics.Rendering.Chart.Plot.AreaSpots.AreaSpots z)

module Numeric.Histogram
type Range a = (a, a)

-- | 'binBounds a b n' generates bounds for n bins spaced linearly
--   between a and b
--   
--   Examples:
--   
--   
--   >>> binBounds 0 3 4
--   [(0.0,0.75),(0.75,1.5),(1.5,2.25),(2.25,3.0)]
--   
binBounds :: RealFrac a => a -> a -> Int -> [Range a]

-- | 'histValues a b n vs' returns the bins for the histogram of
--   vs on the range from a to b with n
--   bins
histValues :: RealFrac a => a -> a -> Int -> [a] -> Vector (Range a, Int)

-- | 'histValues a b n vs' returns the bins for the weighted histogram of
--   vs on the range from a to b with n
--   bins
histWeightedValues :: RealFrac a => a -> a -> Int -> [(Double, a)] -> Vector (Range a, Double)

-- | 'histWithBins bins xs' is the histogram of weighted values xs
--   with bins
--   
--   Examples:
--   
--   
--   >>> :{
--   histWithBins
--       (V.fromList [(0.0, 0.75), (0.75, 1.5), (1.5, 2.25), (2.25, 3.0)])
--       [(1, 0), (1, 0), (1, 1), (1, 2), (1, 2), (1, 2), (1, 3)]
--   :}
--   [((0.0,0.75),2),((0.75,1.5),1),((1.5,2.25),3),((2.25,3.0),1)]
--   
histWithBins :: (Num w, RealFrac a) => Vector (Range a) -> [(w, a)] -> Vector (Range a, w)

module Graphics.Rendering.Chart.Plot.Histogram
data PlotHist x y
PlotHist :: String -> Int -> [x] -> Bool -> Maybe (x, x) -> Bool -> FillStyle -> LineStyle -> (Double -> Int -> y) -> PlotHist x y

-- | Plot title
[_plot_hist_title] :: PlotHist x y -> String

-- | Number of bins
[_plot_hist_bins] :: PlotHist x y -> Int

-- | Values to histogram
[_plot_hist_values] :: PlotHist x y -> [x]

-- | Don't attempt to plot bins with zero counts. Useful when the y-axis is
--   logarithmically scaled.
[_plot_hist_no_zeros] :: PlotHist x y -> Bool

-- | Override the range of the histogram. If Nothing the range of
--   _plot_hist_values is used.
--   
--   Note that any normalization is always computed over the full data set,
--   including samples not falling in the histogram range.
[_plot_hist_range] :: PlotHist x y -> Maybe (x, x)

-- | Plot vertical lines between bins
[_plot_hist_drop_lines] :: PlotHist x y -> Bool

-- | Fill style of the bins
[_plot_hist_fill_style] :: PlotHist x y -> FillStyle

-- | Line style of the bin outlines
[_plot_hist_line_style] :: PlotHist x y -> LineStyle

-- | Normalization function
[_plot_hist_norm_func] :: PlotHist x y -> Double -> Int -> y

-- | Convert a PlotHist to a Plot
--   
--   N.B. In principle this should be Chart's ToPlot class but
--   unfortunately this does not allow us to set bounds on the x and y axis
--   types, hence the need for this function.
histToPlot :: (RealFrac x, Num y, Ord y) => PlotHist x y -> Plot x y

-- | The default style is an unnormalized histogram of 20 bins.
defaultPlotHist :: PlotHist x Int

-- | defaultPlotHist but with real counts
defaultFloatPlotHist :: PlotHist x Double

-- | defaultPlotHist but normalized such that the integral of the
--   histogram is one.
defaultNormedPlotHist :: PlotHist x Double
plot_hist_title :: forall x_a1eFv y_a1eFw. Lens' (PlotHist x_a1eFv y_a1eFw) String
plot_hist_bins :: forall x_a1eFv y_a1eFw. Lens' (PlotHist x_a1eFv y_a1eFw) Int
plot_hist_values :: forall x_a1eFv y_a1eFw. Lens' (PlotHist x_a1eFv y_a1eFw) [x_a1eFv]
plot_hist_no_zeros :: forall x_a1eFv y_a1eFw. Lens' (PlotHist x_a1eFv y_a1eFw) Bool
plot_hist_range :: forall x_a1eFv y_a1eFw. Lens' (PlotHist x_a1eFv y_a1eFw) (Maybe (x_a1eFv, x_a1eFv))
plot_hist_drop_lines :: forall x_a1eFv y_a1eFw. Lens' (PlotHist x_a1eFv y_a1eFw) Bool
plot_hist_line_style :: forall x_a1eFv y_a1eFw. Lens' (PlotHist x_a1eFv y_a1eFw) LineStyle
plot_hist_fill_style :: forall x_a1eFv y_a1eFw. Lens' (PlotHist x_a1eFv y_a1eFw) FillStyle
plot_hist_norm_func :: forall x_a1eFv y_a1eFw y_a1eTZ. Lens (PlotHist x_a1eFv y_a1eFw) (PlotHist x_a1eFv y_a1eTZ) (Double -> Int -> y_a1eFw) (Double -> Int -> y_a1eTZ)
instance Data.Default.Class.Default (Graphics.Rendering.Chart.Plot.Histogram.PlotHist x GHC.Types.Int)

-- | Code to calculate and render various types of plots.
module Graphics.Rendering.Chart.Plot

-- | This module glues together axes and plots to actually create a
--   renderable for a chart.
--   
--   Note that Template haskell is used to derive accessor functions (see
--   Lens) for each field of the following data types:
--   
--   
--   
- Layout
--   
- LayoutLR
--   
- StackedLayouts
--   
- LayoutAxis
--   
module Graphics.Rendering.Chart.Layout

-- | A Layout value is a single plot area, with single x and y axis. The
--   title is at the top and the legend at the bottom. It's parametrized by
--   the types of values to be plotted on the x and y axes.
data Layout x y
Layout :: FillStyle -> Maybe FillStyle -> String -> FontStyle -> LayoutAxis x -> AxisVisibility -> AxisVisibility -> LayoutAxis y -> AxisVisibility -> AxisVisibility -> [Plot x y] -> Maybe LegendStyle -> Double -> Bool -> Layout x y

-- | How to fill the background of everything.
[_layout_background] :: Layout x y -> FillStyle

-- | How to fill the background of the plot, if different from the overall
--   background.
[_layout_plot_background] :: Layout x y -> Maybe FillStyle

-- | Title to display above the chart.
[_layout_title] :: Layout x y -> String

-- | Font style to use for the title.
[_layout_title_style] :: Layout x y -> FontStyle

-- | Rules to generate the x axis.
[_layout_x_axis] :: Layout x y -> LayoutAxis x

-- | Visibility options for the top axis.
[_layout_top_axis_visibility] :: Layout x y -> AxisVisibility

-- | Visibility options for the bottom axis.
[_layout_bottom_axis_visibility] :: Layout x y -> AxisVisibility

-- | Rules to generate the y axis.
[_layout_y_axis] :: Layout x y -> LayoutAxis y

-- | Visibility options for the left axis.
[_layout_left_axis_visibility] :: Layout x y -> AxisVisibility

-- | Visibility options for the right axis.
[_layout_right_axis_visibility] :: Layout x y -> AxisVisibility

-- | The data sets to plot in the chart. They are plotted over each other.
[_layout_plots] :: Layout x y -> [Plot x y]

-- | How to style the legend.
[_layout_legend] :: Layout x y -> Maybe LegendStyle

-- | The margin distance to use.
[_layout_margin] :: Layout x y -> Double

-- | If the grid shall be rendered beneath (False) or over
--   (True) all plots.
[_layout_grid_last] :: Layout x y -> Bool

-- | A LayoutLR value is a single plot area, with an x axis and independent
--   left and right y axes, with a title at the top; legend at the bottom.
--   It's parametrized by the types of values to be plotted on the x and
--   two y axes.
data LayoutLR x y1 y2
LayoutLR :: FillStyle -> Maybe FillStyle -> String -> FontStyle -> LayoutAxis x -> AxisVisibility -> AxisVisibility -> LayoutAxis y1 -> AxisVisibility -> LayoutAxis y2 -> AxisVisibility -> [Either (Plot x y1) (Plot x y2)] -> Maybe LegendStyle -> Double -> Bool -> LayoutLR x y1 y2

-- | How to fill the background of everything.
[_layoutlr_background] :: LayoutLR x y1 y2 -> FillStyle

-- | How to fill the background of the plot, if different from the overall
--   background.
[_layoutlr_plot_background] :: LayoutLR x y1 y2 -> Maybe FillStyle

-- | Title to display above the chart.
[_layoutlr_title] :: LayoutLR x y1 y2 -> String

-- | Font style to use for the title.
[_layoutlr_title_style] :: LayoutLR x y1 y2 -> FontStyle

-- | Rules to generate the x axis.
[_layoutlr_x_axis] :: LayoutLR x y1 y2 -> LayoutAxis x

-- | Visibility options for the top axis.
[_layoutlr_top_axis_visibility] :: LayoutLR x y1 y2 -> AxisVisibility

-- | Visibility options for the bottom axis.
[_layoutlr_bottom_axis_visibility] :: LayoutLR x y1 y2 -> AxisVisibility

-- | Rules to generate the left y axis.
[_layoutlr_left_axis] :: LayoutLR x y1 y2 -> LayoutAxis y1

-- | Visibility options for the left axis.
[_layoutlr_left_axis_visibility] :: LayoutLR x y1 y2 -> AxisVisibility

-- | Rules to generate the right y axis.
[_layoutlr_right_axis] :: LayoutLR x y1 y2 -> LayoutAxis y2

-- | Visibility options for the right axis.
[_layoutlr_right_axis_visibility] :: LayoutLR x y1 y2 -> AxisVisibility

-- | The data sets to plot in the chart. They are plotted over each other.
--   The either type associates the plot with the left or right y axis.
[_layoutlr_plots] :: LayoutLR x y1 y2 -> [Either (Plot x y1) (Plot x y2)]

-- | How to style the legend.
[_layoutlr_legend] :: LayoutLR x y1 y2 -> Maybe LegendStyle

-- | The margin distance to use.
[_layoutlr_margin] :: LayoutLR x y1 y2 -> Double

-- | If the grid shall be rendered beneath (False) or over
--   (True) all plots.
[_layoutlr_grid_last] :: LayoutLR x y1 y2 -> Bool

-- | Type of axis that is used in Layout and LayoutLR.
--   
--   To generate the actual axis type (AxisData and AxisT)
--   the _laxis_generate function is called and custom settings are
--   applied with _laxis_override. Note that the
--   AxisVisibility values in Layout and LayoutLR
--   override visibility related settings of the axis.
data LayoutAxis x
LayoutAxis :: FontStyle -> String -> AxisStyle -> AxisFn x -> (AxisData x -> AxisData x) -> Bool -> LayoutAxis x

-- | Font style to use for the axis title.
[_laxis_title_style] :: LayoutAxis x -> FontStyle

-- | Title displayed for the axis.
[_laxis_title] :: LayoutAxis x -> String

-- | Axis style applied.
[_laxis_style] :: LayoutAxis x -> AxisStyle

-- | Function that generates the axis data, based upon the points plotted.
--   The default value is autoAxis.
[_laxis_generate] :: LayoutAxis x -> AxisFn x

-- | Function that can be used to override the generated axis data. The
--   default value is id.
[_laxis_override] :: LayoutAxis x -> AxisData x -> AxisData x

-- | True if left to right (bottom to top) is to show descending values.
[_laxis_reverse] :: LayoutAxis x -> Bool

-- | Information on what is at a specifc location of a Layout or
--   LayoutLR. This is delivered by the PickFn of a
--   Renderable.
data LayoutPick x y1 y2

-- | A legend entry.
LayoutPick_Legend :: String -> LayoutPick x y1 y2

-- | The title.
LayoutPick_Title :: String -> LayoutPick x y1 y2

-- | The title of the top x axis.
LayoutPick_XTopAxisTitle :: String -> LayoutPick x y1 y2

-- | The title of the bottom x axis.
LayoutPick_XBottomAxisTitle :: String -> LayoutPick x y1 y2

-- | The title of the left y axis.
LayoutPick_YLeftAxisTitle :: String -> LayoutPick x y1 y2

-- | The title of the right y axis.
LayoutPick_YRightAxisTitle :: String -> LayoutPick x y1 y2

-- | The plot area at the given plot coordinates.
LayoutPick_PlotArea :: x -> y1 -> y2 -> LayoutPick x y1 y2

-- | The top x axis at the given plot coordinate.
LayoutPick_XTopAxis :: x -> LayoutPick x y1 y2

-- | The bottom x axis at the given plot coordinate.
LayoutPick_XBottomAxis :: x -> LayoutPick x y1 y2

-- | The left y axis at the given plot coordinate.
LayoutPick_YLeftAxis :: y1 -> LayoutPick x y1 y2

-- | The right y axis at the given plot coordinate.
LayoutPick_YRightAxis :: y2 -> LayoutPick x y1 y2

-- | A container for a set of vertically StackedLayouts. The x axis
--   of the different layouts will be aligned.
data StackedLayouts x
StackedLayouts :: [StackedLayout x] -> Bool -> StackedLayouts x

-- | The stacked layouts from top (first element) to bottom (last element).
[_slayouts_layouts] :: StackedLayouts x -> [StackedLayout x]

-- | If the different legends shall be combined in one legend at the
--   bottom.
[_slayouts_compress_legend] :: StackedLayouts x -> Bool

-- | A layout with its y type hidden, so that it can be stacked with other
--   layouts with differing y axis, but the same x axis. See
--   StackedLayouts.
data StackedLayout x

-- | A Layout to stack.
StackedLayout :: Layout x y -> StackedLayout x

-- | A LayoutLR to stack.
StackedLayoutLR :: LayoutLR x yl yr -> StackedLayout x

-- | A MAxisFn is a function that generates an (optional) axis
--   given the points plotted against that axis.
type MAxisFn t = [t] -> Maybe (AxisData t)

-- | Render the given Layout.
layoutToRenderable :: forall x y. (Ord x, Ord y) => Layout x y -> Renderable (LayoutPick x y y)
layoutToGrid :: forall x y. (Ord x, Ord y) => Layout x y -> Grid (Renderable (LayoutPick x y y))

-- | Render the given LayoutLR.
layoutLRToRenderable :: forall x yl yr. (Ord x, Ord yl, Ord yr) => LayoutLR x yl yr -> Renderable (LayoutPick x yl yr)
layoutLRToGrid :: forall x yl yr. (Ord x, Ord yl, Ord yr) => LayoutLR x yl yr -> Grid (Renderable (LayoutPick x yl yr))

-- | Render several layouts with the same x-axis type and range, vertically
--   stacked so that their origins and x-values are aligned.
--   
--   The legends from all the charts may be optionally combined, and shown
--   once on the bottom chart. See StackedLayouts for further
--   information.
renderStackedLayouts :: forall x. Ord x => StackedLayouts x -> Renderable ()
laxis_title_style :: forall x_a1gNw. Lens' (LayoutAxis x_a1gNw) FontStyle
laxis_title :: forall x_a1gNw. Lens' (LayoutAxis x_a1gNw) String
laxis_style :: forall x_a1gNw. Lens' (LayoutAxis x_a1gNw) AxisStyle
laxis_generate :: forall x_a1gNw. Lens' (LayoutAxis x_a1gNw) (AxisFn x_a1gNw)
laxis_override :: forall x_a1gNw. Lens' (LayoutAxis x_a1gNw) (AxisData x_a1gNw -> AxisData x_a1gNw)
laxis_reverse :: forall x_a1gNw. Lens' (LayoutAxis x_a1gNw) Bool
layout_background :: forall x_a1gNr y_a1gNs. Lens' (Layout x_a1gNr y_a1gNs) FillStyle
layout_plot_background :: forall x_a1gNr y_a1gNs. Lens' (Layout x_a1gNr y_a1gNs) (Maybe FillStyle)
layout_title :: forall x_a1gNr y_a1gNs. Lens' (Layout x_a1gNr y_a1gNs) String
layout_title_style :: forall x_a1gNr y_a1gNs. Lens' (Layout x_a1gNr y_a1gNs) FontStyle
layout_x_axis :: forall x_a1gNr y_a1gNs. Lens' (Layout x_a1gNr y_a1gNs) (LayoutAxis x_a1gNr)
layout_top_axis_visibility :: forall x_a1gNr y_a1gNs. Lens' (Layout x_a1gNr y_a1gNs) AxisVisibility
layout_bottom_axis_visibility :: forall x_a1gNr y_a1gNs. Lens' (Layout x_a1gNr y_a1gNs) AxisVisibility
layout_y_axis :: forall x_a1gNr y_a1gNs. Lens' (Layout x_a1gNr y_a1gNs) (LayoutAxis y_a1gNs)
layout_left_axis_visibility :: forall x_a1gNr y_a1gNs. Lens' (Layout x_a1gNr y_a1gNs) AxisVisibility
layout_right_axis_visibility :: forall x_a1gNr y_a1gNs. Lens' (Layout x_a1gNr y_a1gNs) AxisVisibility
layout_margin :: forall x_a1gNr y_a1gNs. Lens' (Layout x_a1gNr y_a1gNs) Double
layout_plots :: forall x_a1gNr y_a1gNs. Lens' (Layout x_a1gNr y_a1gNs) [Plot x_a1gNr y_a1gNs]
layout_legend :: forall x_a1gNr y_a1gNs. Lens' (Layout x_a1gNr y_a1gNs) (Maybe LegendStyle)
layout_grid_last :: forall x_a1gNr y_a1gNs. Lens' (Layout x_a1gNr y_a1gNs) Bool

-- | Setter to update all axis styles on a Layout
layout_axes_styles :: Setter' (Layout x y) AxisStyle

-- | Setter to update all the axes title styles on a Layout
layout_axes_title_styles :: Setter' (Layout x y) FontStyle

-- | Setter to update all the font styles on a Layout
layout_all_font_styles :: Setter' (Layout x y) FontStyle

-- | Setter to update the foreground color of core chart elements on a
--   Layout
layout_foreground :: Setter' (Layout x y) (AlphaColour Double)
layoutlr_background :: forall x_a1gNo y1_a1gNp y2_a1gNq. Lens' (LayoutLR x_a1gNo y1_a1gNp y2_a1gNq) FillStyle
layoutlr_plot_background :: forall x_a1gNo y1_a1gNp y2_a1gNq. Lens' (LayoutLR x_a1gNo y1_a1gNp y2_a1gNq) (Maybe FillStyle)
layoutlr_title :: forall x_a1gNo y1_a1gNp y2_a1gNq. Lens' (LayoutLR x_a1gNo y1_a1gNp y2_a1gNq) String
layoutlr_title_style :: forall x_a1gNo y1_a1gNp y2_a1gNq. Lens' (LayoutLR x_a1gNo y1_a1gNp y2_a1gNq) FontStyle
layoutlr_x_axis :: forall x_a1gNo y1_a1gNp y2_a1gNq. Lens' (LayoutLR x_a1gNo y1_a1gNp y2_a1gNq) (LayoutAxis x_a1gNo)
layoutlr_top_axis_visibility :: forall x_a1gNo y1_a1gNp y2_a1gNq. Lens' (LayoutLR x_a1gNo y1_a1gNp y2_a1gNq) AxisVisibility
layoutlr_bottom_axis_visibility :: forall x_a1gNo y1_a1gNp y2_a1gNq. Lens' (LayoutLR x_a1gNo y1_a1gNp y2_a1gNq) AxisVisibility
layoutlr_left_axis :: forall x_a1gNo y1_a1gNp y2_a1gNq. Lens' (LayoutLR x_a1gNo y1_a1gNp y2_a1gNq) (LayoutAxis y1_a1gNp)
layoutlr_right_axis :: forall x_a1gNo y1_a1gNp y2_a1gNq. Lens' (LayoutLR x_a1gNo y1_a1gNp y2_a1gNq) (LayoutAxis y2_a1gNq)
layoutlr_left_axis_visibility :: forall x_a1gNo y1_a1gNp y2_a1gNq. Lens' (LayoutLR x_a1gNo y1_a1gNp y2_a1gNq) AxisVisibility
layoutlr_right_axis_visibility :: forall x_a1gNo y1_a1gNp y2_a1gNq. Lens' (LayoutLR x_a1gNo y1_a1gNp y2_a1gNq) AxisVisibility
layoutlr_plots :: forall x_a1gNo y1_a1gNp y2_a1gNq. Lens' (LayoutLR x_a1gNo y1_a1gNp y2_a1gNq) [Either (Plot x_a1gNo y1_a1gNp) (Plot x_a1gNo y2_a1gNq)]
layoutlr_legend :: forall x_a1gNo y1_a1gNp y2_a1gNq. Lens' (LayoutLR x_a1gNo y1_a1gNp y2_a1gNq) (Maybe LegendStyle)
layoutlr_margin :: forall x_a1gNo y1_a1gNp y2_a1gNq. Lens' (LayoutLR x_a1gNo y1_a1gNp y2_a1gNq) Double
layoutlr_grid_last :: forall x_a1gNo y1_a1gNp y2_a1gNq. Lens' (LayoutLR x_a1gNo y1_a1gNp y2_a1gNq) Bool

-- | Setter to update all axis styles on a LayoutLR
layoutlr_axes_styles :: Setter' (LayoutLR x y1 y2) AxisStyle

-- | Setter to update all the axes title styles on a LayoutLR
layoutlr_axes_title_styles :: Setter' (LayoutLR x y1 y2) FontStyle

-- | Setter to update all the font styles on a LayoutLR
layoutlr_all_font_styles :: Setter' (LayoutLR x y1 y2) FontStyle

-- | Setter to update the foreground color of core chart elements on a
--   LayoutLR
layoutlr_foreground :: Setter' (LayoutLR x y1 y2) (AlphaColour Double)
slayouts_layouts :: forall x_a1gNj x_a1ir3. Lens (StackedLayouts x_a1gNj) (StackedLayouts x_a1ir3) [StackedLayout x_a1gNj] [StackedLayout x_a1ir3]
slayouts_compress_legend :: forall x_a1gNj. Lens' (StackedLayouts x_a1gNj) Bool
instance (GHC.Show.Show x, GHC.Show.Show y1, GHC.Show.Show y2) => GHC.Show.Show (Graphics.Rendering.Chart.Layout.LayoutPick x y1 y2)
instance Data.Default.Class.Default (Graphics.Rendering.Chart.Layout.StackedLayouts x)
instance GHC.Classes.Ord x => Graphics.Rendering.Chart.Renderable.ToRenderable (Graphics.Rendering.Chart.Layout.StackedLayouts x)
instance (GHC.Classes.Ord x, GHC.Classes.Ord yl, GHC.Classes.Ord yr) => Graphics.Rendering.Chart.Renderable.ToRenderable (Graphics.Rendering.Chart.Layout.LayoutLR x yl yr)
instance (Graphics.Rendering.Chart.Axis.Types.PlotValue x, Graphics.Rendering.Chart.Axis.Types.PlotValue y1, Graphics.Rendering.Chart.Axis.Types.PlotValue y2) => Data.Default.Class.Default (Graphics.Rendering.Chart.Layout.LayoutLR x y1 y2)
instance (GHC.Classes.Ord x, GHC.Classes.Ord y) => Graphics.Rendering.Chart.Renderable.ToRenderable (Graphics.Rendering.Chart.Layout.Layout x y)
instance (Graphics.Rendering.Chart.Axis.Types.PlotValue x, Graphics.Rendering.Chart.Axis.Types.PlotValue y) => Data.Default.Class.Default (Graphics.Rendering.Chart.Layout.Layout x y)
instance Graphics.Rendering.Chart.Axis.Types.PlotValue t => Data.Default.Class.Default (Graphics.Rendering.Chart.Layout.LayoutAxis t)

module Graphics.Rendering.Chart.State

-- | Add a plot to the Layout being constructed.
plot :: ToPlot p => EC (Layout x y) (p x y) -> EC (Layout x y) ()

-- | Add a plot against the left axis to the LayoutLR being
--   constructed.
plotLeft :: ToPlot p => EC (LayoutLR x y1 y2) (p x y1) -> EC (LayoutLR x y1 y2) ()

-- | Add a plot against the right axis tof the LayoutLR being
--   constructed.
plotRight :: ToPlot p => EC (LayoutLR x y1 y2) (p x y2) -> EC (LayoutLR x y1 y2) ()

-- | Pop and return the next color from the state
takeColor :: EC l (AlphaColour Double)

-- | Pop and return the next shape from the state
takeShape :: EC l PointShape

-- | The state held when monadically constructing a graphical element
data CState
colors :: Lens' CState [AlphaColour Double]
shapes :: Lens' CState [PointShape]

-- | We use nested State monads to give nice syntax. The outer state is the
--   graphical element being constructed (typically a layout). The inner
--   state contains any additional state reqired. This approach means that
--   lenses and the state monad lens operators can be used directly on the
--   value being constructed.
type EC l a = StateT l (State CState) a

-- | Run the monadic EC computation, and return the graphical
--   element (ie the outer monad' state)
execEC :: Default l => EC l a -> l

-- | Nest the construction of a graphical element within the construction
--   of another.
liftEC :: Default l1 => EC l1 a -> EC l2 l1

-- | Lift a a computation over CState
liftCState :: State CState a -> EC l a
instance (Data.Default.Class.Default a, Graphics.Rendering.Chart.Renderable.ToRenderable a) => Graphics.Rendering.Chart.Renderable.ToRenderable (Graphics.Rendering.Chart.State.EC a b)
instance Data.Default.Class.Default Graphics.Rendering.Chart.State.CState

-- | A framework for creating 2D charts in Haskell.
--   
--   For the simplest API, see the Graphics.Rendering.Chart.Easy
--   module.
--   
--   When more control is required, understanding the various data types is
--   necessary. The basic model is that you define a value representing a
--   chart to be displayed (eg. a Layout), and then convert it to a
--   Renderable by applying toRenderable. This
--   Renderable is then actually output by calling a function in an
--   appropriate graphics backend, eg renderableToFile.
--   
--   Currently, there are three types of charts:
--   
--   
--   
- Layout is a standard XY chart
--   
- LayoutLR is an XY chart with independent left and right
--   axes
--   
- PieLayout is a pie chart
--   
--   
--   Layout and LayoutLR charts can be stacked vertically
--   using the StackedLayouts type.
--   
--   Renderables can be composed in arbitrary ways using the
--   Graphics.Rendering.Chart.Grid module.
--   
--   Many of the record structure involved in the API have a large number
--   of fields. Lenses are provided to access each field. Also,
--   for each record type, there is generally a default value, which can be
--   accessed through the def value of the Default
--   typeclass.
module Graphics.Rendering.Chart

-- | A high level API for generating a plot quickly.
--   
--   Importing the Easy module brings into scope all core functions and
--   types required for working with the chart library. This includes key
--   external dependencies such as Control.Lens and Data.Colour. The module
--   also provides several helper functions for quickly generating common
--   plots. Note that chart backends must still be explicitly imported, as
--   some backends cannot be built on all platforms.
--   
--   Example usage:
--   
--   
--   import Graphics.Rendering.Chart.Easy
--   import Graphics.Rendering.Chart.Backend.Cairo
--   
--   signal :: [Double] -> [(Double,Double)]
--   signal xs = [ (x,(sin (x*3.14159/45) + 1) / 2 * (sin (x*3.14159/5))) | x <- xs ]
--   
--   main = toFile def "example.png" $ do
--       layout_title .= "Amplitude Modulation"
--       plot (line "am" [signal [0,(0.5)..400]])
--       plot (points "am points" (signal [0,7..400]))
--   
--   
--   More examples can be found on the library's wiki
module Graphics.Rendering.Chart.Easy

-- | Returns the opacity of an AlphaColour.
alphaChannel :: AlphaColour a -> a

-- | c1 `atop` c2 returns the AlphaColour produced by
--   covering the portion of c2 visible by c1. The
--   resulting alpha channel is always the same as the alpha channel of
--   c2.
--   
--   
--   c1 `atop` (opaque c2) == c1 `over` (opaque c2)
--   AlphaChannel (c1 `atop` c2) == AlphaChannel c2
--   
atop :: Fractional a => AlphaColour a -> AlphaColour a -> AlphaColour a

-- | Compute the weighted average of two points. e.g.
--   
--   
--   blend 0.4 a b = 0.4*a + 0.6*b
--   
--   
--   The weight can be negative, or greater than 1.0; however, be aware
--   that non-convex combinations may lead to out of gamut colours.
blend :: (Num a, AffineSpace f) => a -> f a -> f a -> f a

-- | Creates an AlphaColour from a Colour with a given
--   opacity.
--   
--   
--   c `withOpacity` o == dissolve o (opaque c)
--   
withOpacity :: Num a => Colour a -> a -> AlphaColour a

-- | Returns an AlphaColour more transparent by a factor of
--   o.
dissolve :: Num a => a -> AlphaColour a -> AlphaColour a

-- | Creates an opaque AlphaColour from a Colour.
opaque :: Num a => Colour a -> AlphaColour a

-- | Change the type used to represent the colour coordinates.
alphaColourConvert :: (Fractional b, Real a) => AlphaColour a -> AlphaColour b

-- | This AlphaColour is entirely transparent and has no associated
--   colour channel.
transparent :: Num a => AlphaColour a
black :: Num a => Colour a

-- | Change the type used to represent the colour coordinates.
colourConvert :: (Fractional b, Real a) => Colour a -> Colour b

-- | This type represents the human preception of colour. The a
--   parameter is a numeric type used internally for the representation.
--   
--   The Monoid instance allows one to add colours, but beware that
--   adding colours can take you out of gamut. Consider using blend
--   whenever possible.
data Colour a

-- | This type represents a Colour that may be semi-transparent.
--   
--   The Monoid instance allows you to composite colours.
--   
--   
--   x `mappend` y == x `over` y
--   
--   
--   To get the (pre-multiplied) colour channel of an AlphaColour
--   c, simply composite c over black.
--   
--   
--   c `over` black
--   
data AlphaColour a
class AffineSpace (f :: Type -> Type)

-- | Compute a affine Combination (weighted-average) of points. The last
--   parameter will get the remaining weight. e.g.
--   
--   
--   affineCombo [(0.2,a), (0.3,b)] c == 0.2*a + 0.3*b + 0.5*c
--   
--   
--   Weights can be negative, or greater than 1.0; however, be aware that
--   non-convex combinations may lead to out of gamut colours.
affineCombo :: (AffineSpace f, Num a) => [(a, f a)] -> f a -> f a
class ColourOps (f :: Type -> Type)

-- | darken s c blends a colour with black without changing it's
--   opacity.
--   
--   For Colour, darken s c = blend s c mempty
darken :: (ColourOps f, Num a) => a -> f a -> f a

-- | Constuct a line plot with the given title and data, using the next
--   available color.
line :: String -> [[(x, y)]] -> EC l (PlotLines x y)

-- | Construct a scatter plot with the given title and data, using the next
--   available color and point shape.
points :: String -> [(x, y)] -> EC l (PlotPoints x y)

-- | Construct a bar chart with the given titles and data, using the next
--   available colors
bars :: (PlotValue x, BarsPlotValue y) => [String] -> [(x, [y])] -> EC l (PlotBars x y)

-- | Set the contents of the colour source, for subsequent plots
setColors :: [AlphaColour Double] -> EC l ()

-- | Set the contents of the shape source, for subsequent plots
setShapes :: [PointShape] -> EC l ()
