[R] Coloured 3d surface

Uwe Ligges ligges at statistik.uni-dortmund.de
Mon Jul 14 08:51:43 CEST 2003

Peter Kraft wrote:

> Hello,
> I created a 3d surface (persp) with some points overlaid on it, which is 
> fine. Now I have a second set of z-values(x,y-values same as the first 
> surface), which I would like to make visible on the same graph, however, 
> not as a surface, but rather as coloured contour on the first surface, 
> so that the resulting graph will consist of the original surface having 
> the colour of the second set of z-values; I managed to create a coloured 
> contour plot, whereby the the contours are based on the first set of 
> z-values and the second set is a colour-coded overlay. If I could do 
> this in 3-d I would be happy for any hint you could give me.
> Thanks for any help
> Peter

You can specify an argument "col" in persp(), see ?persp. However, the 
granularity is given by the facets produced by persp() - each facet has 
exactly one colour.

Uwe Ligges

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