[R] multiple persp plots

[Philippe Grosjean]

Hello,

I would like to plot two superposed surfaces (original data, and smoothed
models). Basically, I would like to create a usual persp plot with box, and
then superpose a second surface (without box and axes) on the top plane of
the box defined by the first graph. I don't know if it is clear :-(
Is it possible to draw such a second surface in an existing persp plot in R?

Another (related) question: once upon a time, it was a 'funfits' library in
CRAN. I don't find it on CRAN any more. Is it defunct? I installed an old
version 2.0.3 of this library. In the help files, there is a mention about
functions like persp.text, persp.points, persp.lines to add features in an
existing persp plot... but I don't find them. Do these functions exist
somewhere? Are they replaced by other functions?

Thanks,

Philippe Grosjean


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