[R] library maps for R

[Tim Churches]

Ross Ihaka wrote:
> I have a student who working on writing new code which provides
> functionality equivalent to the Becker/Wilks maps library.  The code
> provides access to the data in the format produced by Alan Wilks, and
> allows for drawing and extraction of polygons and boundary lines.
> Unlike the S code, we never suck in more than one polygon at a time so
> it is possible to draw a full resolution world map.  We are
> experimenting with a couple of forms of thinning.

Sounds good. By using R --vsize 100M I was able to plot a full
resolution
world map with map("world.full") using Ray's port of the Becker/Wilks
code and data.
It took about 3 minutes for the map to appear (on an old 64 meg RAM
266MHz Pentiium II 
running SuSE Linux 6.1), but it did work, and R (0.65.0) was perfectly
stable afterwards. Very impressive!

Tim Churches

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