I have a question or feature request (depends on the answer to the question). Is it possible to make something like
plot3d([x,y,x+y,sin(x)],[x,0,10],[y,0,10],[grid,50,50],[gnuplot_pm3d, true] ...)
where the 4th component (here sin(x)) is the color?
As far as I understand the gnuplot-manual it should be possible. If gnuplot can do it, but maxima is not able to use this feature (yet), it would be nice to implement it, which should not be so difficult as far as I understand things.
Thanks and kind regards
Bjoern