Plots a map (from a Map object from package maptools) on a unit sphere
in an rgl window that can then be interactively rotated.
Usage
rgl.Map(Map, which, ...)
Arguments
Map
A Map object
which
Vector indicating the subset of polygons to plot.
...
Additional arguments passed on to rgl.lines.
Value
There is no return value, this function is run for its side effect.
Details
This assumes that the map is cordinates in degrees and plots the map
on a unit sphere in an rgl window making a globe. You can then rotate
the globe by clicking and dragging in the window.
# assumes that the time zone shape files have been downloaded# from: http://openmap.bbn.com/data/shape/timezone/tz <- read.shape('WRLDTZA')
rgl.Map(tz)
rgl.spheres(0,0,0,.999, col='darkblue')