[R] Two surfaces in one plot with visibility

[Sebastian Schubert]

Hi,

I would like plot two surfaces which are each given by vectors x and y,
and a matrix m(x,y) representing the z coordinate. With persp() I can
plot both, using par(new=TRUE) I can put it in one plot. However, I
would like to have the visibility of the surfaces taken into account as
if they are solid thin surfaces, so that for example the order of the
plot commands does not matter.

Any idea how to do that?

Thanks a lot,

Sebastian

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