Kelsey Scheitlin <kns07g <at> fsu.edu> writes:
>
> Hi, I am looking for a specific mapping capability in R that I can't seem to
find, but think exists. I would
> like to make a border of a map have alternating black and white squares
instead of the common latitude and
> longitude grid. (example: http://www.cccturtle.org/sat_maps/map0bw8.gif). If
anyone knows if
> there is or is not a function capable if doing this could you please let me
know? Thanks!
>
> Kelsey
It's not QUITE what you're looking for, but
plot(0:1,0:1,bty="n",axes=FALSE)
box(bty="o",lwd=6,lty="FF")
(See ?box, ?par under "bty" and "Line Type Specification")
Otherwise you can do this by using par("usr") to find the
edges of the map, seq() to construct appropriate x and y
sequences, and segments() to draw the lines.
Ben Bolker
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