Hi Eelke,
You can exploit the fact that you can save spplot plots to R-objects
like this:
library(gstat)
data(meuse)
coordinates(meuse) =~ x+y
data(meuse.grid)
gridded(meuse.grid) =~ x+y
p1 = spplot(meuse, "copper")
p2 = spplot(meuse, "zinc")
p3 = spplot(meuse.grid, "dist")
# Make a composite plot:
# see ?print.trellis for more details
print(p1, position = c(0,.5,.5,1),more=T)
print(p2, position = c(.5,.5,1,1),more = T)
print(p3, position = c(0,0,1,.5))
This method allows you to combine all lattice plots (e.g. xyplot,
dotplot, etc) including spplot in one composite image.
cheers,
Paul
Eelke Folmer wrote:
I am trying to make a panel-figure with multiple sp-plots. Doing par(mfrow=)
does not work here because spplot is a wrapper for lattice (right?). I tried
getting around this by exporting the resulting plots to jpg or tif and then
importing it with rgdal. Due to the large size of jpg-s this is not a good
way, even though the principle does work (for one layer of RGB). I would
believe that this is a common operation that shouldn't be so hard if one
only knew how. Any recommendations?
Thanks in advance, Eelke
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Drs. Paul Hiemstra
Department of Physical Geography
Faculty of Geosciences
University of Utrecht
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