Hi!

I need to map z-coordinates from a non-regular grid (output of
rubbersheet) to the z-coordinates of an n-body (unconnected)
set (to be displayed via autoglyph as spheres). I.e. I want to
have the glyphs be vertically aligned with the rubbersheet surface.

just doing

rubbersheet - mark[positions] \
                                compute - unmark
autoglyph - mark[positions]   /

does not work (Bad parameter: inputs must be of the same length / input 1
not matching the master (input 0)).

Is there a way to extract (sample) the rubbersheet at the positions of
the n-body set? I tried to use lookup for this purpose but did not
succeed (well, because I do not have integer indexes for the lookup), also
map does not work because rubber-sheet is 3d, but the connections are
only 2d.

Any Ideas? Richard.

--
Richard Guenther <[EMAIL PROTECTED]>
WWW: http://www.anatom.uni-tuebingen.de/~richi/
The GLAME Project: http://www.glame.de/

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