QwtSplineCurveFitter(3)

NAME
QwtSplineCurveFitter - A curve fitter using cubic splines.

SYNOPSIS

#include <qwt_curve_fitter.h>

Inherits QwtCurveFitter.

  Public Types

enum FitMode { Auto, Spline, ParametricSpline }

  Public Member Functions

QwtSplineCurveFitter ()
Constructor.
virtual ~QwtSplineCurveFitter ()
Destructor.
void setFitMode (FitMode)
FitMode fitMode () const
void setSpline (const QwtSpline &)
const QwtSpline & spline () const
QwtSpline & spline ()
void setSplineSize (int)
int splineSize () const
virtual QPolygonF fitCurve (const QPolygonF &) const

  Additional Inherited Members

Detailed Description

A curve fitter using cubic splines.

Member Enumeration Documentation

  enum QwtSplineCurveFitter::FitMode
Spline type The default setting is Auto

See also:
    setFitMode(), FitMode()

Enumerator

Auto
    Use the default spline algorithm for polygons with increasing x values ( p[i-1] < p[i] ), otherwise use a parametric spline algorithm.

Spline
    Use a default spline algorithm.

ParametricSpline
    Use a parametric spline algorithm.

Member Function Documentation

  QPolygonF QwtSplineCurveFitter::fitCurve (const QPolygonF & points) const [virtual]
Find a curve which has the best fit to a series of data points

Parameters:
    points Series of data points

Returns:
    Curve points

Implements QwtCurveFitter.

  QwtSplineCurveFitter::FitMode QwtSplineCurveFitter::fitMode () const

Returns:
    Mode representing a spline algorithm

See also:
    setFitMode()

  void QwtSplineCurveFitter::setFitMode (FitMode mode)
Select the algorithm used for building the spline

Parameters:
    mode Mode representing a spline algorithm

See also:
    fitMode()

  void QwtSplineCurveFitter::setSpline (const QwtSpline & spline)
Assign a spline

Parameters:
    spline Spline

See also:
    spline()

  void QwtSplineCurveFitter::setSplineSize (int splineSize)
Assign a spline size ( has to be at least 10 points )

Parameters:
    splineSize Spline size

See also:
    splineSize()

  const QwtSpline & QwtSplineCurveFitter::spline () const

Returns:
    Spline

See also:
    setSpline()

  QwtSpline & QwtSplineCurveFitter::spline ()

Returns:
    Spline

See also:
    setSpline()

  int QwtSplineCurveFitter::splineSize () const

Returns:
    Spline size

See also:
    setSplineSize()

Author

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