Christoph Lehmann wrote:
Hi
I use pixmapIndexed
tmp.vimp <- array(0,c(x.dim,y.dim)) tmp.vimp <- pixmapIndexed(tmp.vimp, col=rainbow)
to plot values of a 2D matrix. I 'fill' the pixmapIndexed like:
for (x in 1:x.dim) { for (y in 1:y.dim) { [EMAIL PROTECTED],y] <- my.matrix[x,y] }}
I guess you are going to call it like this: pixmapIndexed(my.matrix, col=rainbow)
If you change the data after the call to pixmapIndexed(), the color information won't be calculated again. See the function definition itself for details (as well as the help page).
Uwe Ligges
how can I define, that the colors are painted e.g. according the rainbow palette?
plot(tmp.vimp) paints all 'pixels' in red even though I specified it with col=rainbow (see above)
many thanks
cheers
christoph
p.s. is there an easier method for 'painting' the values of a 2d matrix?
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