RgoogleMaps (version 1.0)

MapBackground: get static Map from the Google server

Description

get static Map from the Google server

Usage

MapBackground(lat, lon, destfile, NEWMAP = TRUE, myTile,
    zoom = NULL, size = c(640, 640), GRAYSCALE = FALSE, verbose = 1, ...)

Arguments

lat

vector latitude values for the map to contain

lon

vector of longitude values for the map to contain

destfile

File to load the map image from or save to, depending on the value of NEWMAP.

NEWMAP

get new map from teh Google server or load it from existing file

myTile

map tile from previous downloads

zoom

Google maps zoom level. optional if MyMap is passed, required if not.

size

desired size of the map tile image. defaults to maximum size returned by the Gogle server, which is 640x640 pixels.

GRAYSCALE

Boolean toggle; if TRUE the colored map tile is rendered into a black & white image, see RGB2GRAY

verbose

level of verbosity

...

further arguments to be passed to GetMap.bbox

Value

• list containing the map tile

Examples

##---- Should be DIRECTLY executable !! ----
##-- ==>  Define data, use random,
##--	or do  help(data=index)  for the standard data sets.