R (>= 2.10), RgoogleMaps, ReadImages, ggplot2 (>= 0.9.0),
scales, plyr, reshape2, grid, proto, rjson
'crime.R' 'geocode.R' 'GetMap.OSM.R' 'ggimage.R' 'ggmap.R'
'ggmapplot.R' 'hadley.R' 'qmap.R' 'theme_nothing.R' 'zips.R'
'theme_inset.R' 'OSM_scale_lookup.R' 'gglocator.R' 'mapdist.R'
'revgeocode.R' 'route.R'

ggmap allows for the easy visualization of spatial data
and models on top of Google Maps, OpenStreetMaps, Stamen Maps,
or CloudMade Maps using ggplot2.
proto, scales, RgoogleMaps, png, plyr, reshape2, grid, rjson
'crime.R' 'geocode.R' 'ggimage.R' 'ggmap.R' 'hadley.R'
'qmap.R' 'theme_nothing.R' 'zips.R' 'theme_inset.R'
'OSM_scale_lookup.R' 'gglocator.R' 'mapdist.R' 'revgeocode.R'
'route.R' 'help.R' 'get_googlemap.R' 'get_openstreetmap.R'
'get_stamenmap.R' 'LonLat2XY.R' 'XY2LonLat.R'
'get_cloudmademap.R' 'get_map.R' 'qmplot.R' 'make_bbox.R'
'wind.R' 'inset_raster.R' 'inset.R'

proto, scales, RgoogleMaps, png, plyr, reshape2, grid, rjson,
mapproj

Spatial Visualization with Google Maps and OpenStreetMap
Easily visualize of spatial data and models on top of Google Maps,
OpenStreetMaps, Stamen Maps, or CloudMade Maps with ggplot2.
c(person("David", "Kahle", email = "david.kahle@gmail.com", role = c("aut", "cre")),
person("Hadley", "Wickham", email = "h.wickham@gmail.com", role = "aut"))
proto, scales, RgoogleMaps, png, plyr, reshape2, grid, rjson,
mapproj, jpeg, geosphere, digest
David Kahle [aut, cre],
Hadley Wickham [aut]

A collection of functions to visualize spatial data and models on top of static maps
from various online sources (e.g Google Maps and Stamen Maps).  It includes tools common to those
tasks, including functions for geolocation and routing.

A collection of functions to visualize spatial data and models
on top of static maps from various online sources (e.g Google Maps and Stamen
Maps). It includes tools common to those tasks, including functions for
geolocation and routing.
proto, RgoogleMaps, png, plyr, reshape2, rjson, mapproj, jpeg,
geosphere, digest, scales

Orphaned on 2019-01-23 as no response after 2 months to
check errors despite reminders and deadline.

Usage of Google Maps API.