Thanks Duncan and Greg.
My current solution is to use the rgl-package.
Is there an easy way to obtain a screenshot in eps- or pdf-Format from such
an rgl-window?
I saw the rgl.snapshot function but it does not provide this format.
So far, I take a snapshot, save it as jpeg and convert it to eps via
jpeg2ps.exe
Maybe not the most elegant way but the results are better than I
anticipated.
Thanks,
Roland
On 2/9/07, Duncan Murdoch <[EMAIL PROTECTED]> wrote:
>
> On 2/9/2007 1:11 PM, Greg Snow wrote:
> > Probably the easiest way is to use the "wireframe" function in the
> > lattice package. The second example in the help shows 2 surfaces (you
> > do need to combine the data into a single data frame).
> >
> > If you really want to use the "persp" function, then you could create
> > the first plot, then call "par(new=TRUE)" and then do the 2nd plot, but
> > that would take a lot of thinking to get the axes and scales to line up
> > properly and make it look good.
>
> Another alternative is to use the persp3d function and surface3d
> functions in the rgl package. It would be quite tricky to get persp to
> handle hidden surfaces properly, whereas rgl will just do it (as long as
> neither is transparent. Transparency is hard.)
>
> For example, after running example(persp) so that x, y, and z contain
> values that were just used in
>
> persp(x, y, z, theta = 135, phi = 30, col = "green3", scale = FALSE,
> ltheta = -120, shade = 0.75, border = NA, box = FALSE)
>
> you can run
>
> library(rgl)
>
> persp3d(x,y,z, col="green3", aspect="iso", axes=FALSE, box=FALSE,
> xlab="", ylab="", zlab="")
>
> persp3d(x,y,(z + mean(z))/2, col="red", add=TRUE)
>
> and then rotate the surfaces to the desired viewing angle.
>
> Duncan Murdoch
>
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