RgoogleMaps

add alpha level to color that lacks one

Plot Levels of a Variable in a Colour-Coded Map

change data.frame to SpatialPointsDataFrame

download a static map from the Microsoft map tile server

download a static map from the Google server

GetMap bbox

download map tiles from specified map tile servers such as openstreetmap or Google

Query the Open Street Map server for map tiles instead of Google Maps

identify points by clicking on map

computes the coordinate transformation from lat/lon to map tile coordinates

computes the centered coordinate transformation from lat/lon to map tile coordinates

get static Map from the Google server

computes the maximum zoom level which will contain the given lat/lon range

Upstate New York Leukemia Data

computes the necessary number of tiles from a bounding box and a zoom level

plots arrows or segments on map

plots on map tiles by "stitching" them together

overlays plot on background image of map tile

plots polygons on map

translates an RGB image matrix to gray scale

Read a bitmap image stored in the PNG format

converts spatial objects as defined in package sp to simpler PBSmapping type dataframes

plots text on map

simple utility to offset and scale XY coordinates with respect to the center

computes the centered coordinate transformation from lat/lon to map tile coordinates

Create a bubble plot of spatial data on Google Maps

Columbus OH spatial analysis data set

axis with degrees

generates a "static map" from map tiles by "stitching" them together

Transform longitude/latiude points to the Mercator projection.

geocoding utility

San Francisco crime data

simple wrapper function to plot colored polygons

compute the bounding box of an OpenStreetmap tile

Pennsylvania Lung Cancer

plots OSM map tiles

plots a single OSM tile

easy to use wrapper function

computes bounding box

Updates the 'usr' coordinates in the current plot.