[R-sig-Geo] Export a trellis object as a pdf, jpg or similar

[Tim Appelhans]

Hi Ester,
for trellis objects you need the print command.

Try:

print(world_threat)

within your pdf(), jpg() or png() call and it should work.

HTH
Tim

On 6/12/2012 20:36, Ester Polaina Lacambra wrote:
> Hello everyone!
>
> I am drawing maps using spplot function, from sp package, and I am
> experiencing problems in visualizing my maps because apparently the volume
> of data is big. To avoid waiting I've thought in creating an object and
> then export it in another format such as pdf, jpg, png...
>
> I've tried pdf(), png(), but what it is recorded is an empty file. What
> else can I try?
>
> Or if not, is there any way of diminishing the time R takes to show the map
> I'm drawing?
>
> I let here my trellis object:
>
> world_threat <- spplot(World_map, "total_amenazadas", at=world_pretty$brks,
> col.regions=pal, sp.layout=spl, col = "grey30")
>
> Thank you very much,
>
> Ester
>
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>
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-- 
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Tim Appelhans
Department of Geography
Environmental Informatics
Philipps Universität Marburg
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Germany

Tel +49 (0) 6421 28-25957

http://environmentalinformatics-marburg.de/