Overlays on Static Maps

Serves two purposes: (i) Provide a comfortable R interface to query the Google server for static maps, and (ii) Use the map as a background image to overlay plots within R. This requires proper coordinate scaling.


Changes in Version

o Added full support for Openstreetmap (OSM) tiles All functions should work properly with both Google and OSM tiles.

Changes in Version

o Added function ColorMap, which plots levels of a Variable in a Colour-Coded Map

Changes in Version 1.2.0

o As of version: 1.2.0, RgoogleMaps only offers support for png files, no more jpeg. The maintenance of the jpg ReadImages library has become too tedious, so I removed all dependencies.

Changes in Version 1.3.0

o bug fix: NEWMAP had no effect in GetMap function, fixed now o bug fix: spatial polygons with holes were not displaced properly, fixed now o bug fix: boundary condition problems at lon= +/- 180, fixed now o bug fix: dataframe markers argument to GetMap did not work properly, fixed now o new feature: added full support for Microsoft bing map tiles

Changes in Version 1.4.1

o new feature: added full support for OpenStreetMap maps o removed dependency on RJSONIO o new feature: added functions to fetch individual map tiles and stitch them together. This has the side effect of making these maps available offline

Reference manual

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