persp & colors
On Sun, Jun 01, 2003 at 06:53:55PM +0200, Uwe Ligges wrote:
but I'd like to persp()' colors behave like in image() function!
That's not easy, because you have to redefine x, y and z values. Simple example: x <- y <- 1:2 z <- matrix(1:4, 2) image(x, y, z) # OK, quite nice but persp(x, y, z) has only one facet. So the only way is to calculate the 9 values for x, y, and z to get the corners for the 4 facets in it. That's easy for x and y, but can be impossible for z...
OK, thank you for answer! But, I saw that other mathematic frameworks (CERN ROOT for instance) can plot 3D surfaces with colors corresponding to z-value. Is there way to do this in R (with another functions/packages)? It's not necessary to use _one_ color per facet, yes?.. :) -- WBR, Timur.