# Overlays on Static Maps

## Documentation for package ‘RgoogleMaps’ version 1.5.1

- DESCRIPTION file.
- Package NEWS.

## Help Pages

AddAlpha | add alpha level to color that lacks one
bbs | Columbus OH spatial analysis data set
col.gal.nb | Columbus OH spatial analysis data set
ColorMap | Plot Levels of a Variable in a Colour-Coded Map
columbus | Columbus OH spatial analysis data set
coords | Columbus OH spatial analysis data set
degreeAxis | axis with degrees
genStaticMap | generates a "static map" from map tiles by "stitching" them together
geosphere_mercator | Transform longitude/latiude points to the Mercator projection.
GetBingMap | download a static map from the Microsoft map tile server
getGeoCode | geocoding utility
GetMap | download a static map from the Google server
GetMap.bbox | GetMap bbox
GetMapTiles | download map tiles from specified map tile servers such as openstreetmap or Google
GetOsmMap | Query the Open Street Map server for map tiles instead of Google Maps
IdentifyPoints | identify points by clicking on map
incidents | San Francisco crime data
LatLon2XY | computes the coordinate transformation from lat/lon to map tile coordinates
LatLon2XY.centered | computes the centered coordinate transformation from lat/lon to map tile coordinates
MapBackground | get static Map from the Google server
MaxZoom | computes the maximum zoom level which will contain the given lat/lon range
mypolygon | simple wrapper function to plot colored polygons
NumTiles | computes the necessary number of tiles from a bounding box and a zoom level
NYleukemia | Upstate New York Leukemia Data
osmtile_bbox | compute the bounding box of an OpenStreetmap tile
pennLC | Pennsylvania Lung Cancer
PlotArrowsOnStaticMap | plots arrows or segments on map
plotmap | easy to use wrapper function
PlotOnMapTiles | plots on map tiles by "stitching" them together
PlotOnStaticMap | overlays plot on background image of map tile
plotOSM | plots OSM map tiles
plotOSMtile | plots a single OSM tile
PlotPolysOnStaticMap | plots polygons on map
polys | Columbus OH spatial analysis data set
qbbox | computes bounding box
ReadMapTile | Read a bitmap image stored in the PNG format
RGB2GRAY | translates an RGB image matrix to gray scale
SpatialToPBS | converts spatial objects as defined in package sp to simpler PBSmapping type dataframes
sp_bbox | computes bounding box
TextOnStaticMap | plots text on map
Tile2R | simple utility to offset and scale XY coordinates with respect to the center
updateusr | Updates the 'usr' coordinates in the current plot.
XY2LatLon | computes the centered coordinate transformation from lat/lon to map tile coordinates