filling in the blanks

I would like to fill "missing data" regions (where data points have
missing value indicator) with points (or a surface) of black or some
other uniform color not part of the usual RGB spectrum.

This to keep the user from seeing trough holes in 3D plots, and
mistakenly seeing values from a surface behind the hole.

Is there a way to make a ScalarMap that sets missing values to a color?

Stu Wier

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Stuart Wier                           UCAR Unidata Program Center
wier@xxxxxxxxxxxxxxxx                        P.O. Box 3000
(303) 497-8659                              Boulder, CO 80307
Unidata Home Page                     http://www.unidata.ucar.edu/