[R-sig-Geo] SpatialPolygonsDataFrame visualization

[Rick Reeves]

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
>
>
>   
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