Mathiu:
The attached use case might help: It is not exactly what you are looking
for, but the last map
demonstrates use of the spplot function to create a 'display list' that
plots vector and raster
data layers on a single map. Also some hints on creating a map scale and
legend.
http://nceas.ucsb.edu/scicomp/GISSeminar/UseCases/MapProdWithRGraphics/OneMapProdWithRGraphics.html
Regards,
Rick Reeves
Mathieu Basille wrote:
Hello everyone,
I'm not very familiar with visualization of spatial objects in R,
especially with the possibilities of the spplot function...
I have a SpatialPolygonsDataFrame and I'd like to obtain a map with a
specific scale for each layer (not in the geographic space, but in the
data), instead of the same one for every one. In my case, the layers
represent different variables, not on the same scale (e.g. elevation and
rain).
Additionally, I'd like to represent NA's with a particular color (say
black so that we can see immediately where they occur).
I guess these 2 issues are somehow related, but I didn't manage to solve
them. The help pages of spplot or xyplot didn't really help...
Any hint how to do that?
Thanks in advance,
Mathieu.
> version
platform i486-pc-linux-gnu
svn rev 43537
version.string R version 2.6.1 (2007-11-26)
sp: sp_0.9-19
begin:vcard
fn:Rick Reeves
n:Reeves;Rick
org:UC Santa Barbara;National Center For Ecological Analysis and Synthesis
adr:Suite 300;;735 State Street;Santa Barbara;CA;93101;USA
email;internet:[EMAIL PROTECTED]
title:Rick Reeves, Scientific Programmer/Analyst
tel;work:805 892 2533
url:http://www.nceas.ucsb.edu
version:2.1
end:vcard
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