[R] overlay two pixmap

Christoph Lehmann christoph.lehmann at gmx.ch
Fri Sep 26 10:32:21 CEST 2003


I need to overlay two pixmaps (library (pixmap)). One, a pixmapGrey, is
the basis, and on this I need to overlay a pixmapIndexed, BUT: the
pixmapIndexed has set only some of its "pixels" to an indexed color,
many of its pixels should not cover the basis pixmapGrey pixel, means,
for this "in pixmapIndexed not defined pixels" it should be transparent.

What would you recommend me to do? Should I go for another solution than

Many thanks



Christoph Lehmann <lehmann at puk.unibe.ch>
University Hospital of Clinical Psychiatry
Christoph Lehmann <christoph.lehmann at gmx.ch>

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