[R] pixmapIndexed color question
Christoph Lehmann
christoph.lehmann at gmx.ch
Mon Jul 12 11:25:37 CEST 2004
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) {
tmp.vimp at index[x,y] <- my.matrix[x,y]
}}
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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