20001207: Controlling colors when displaying UnionSets

>From: "From: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>" <billh@xxxxxxxxxxxxx>
>Keywords: 200012072214.eB7MEeo08870

Just one more note:

>You can override the default values by passing a ConstantMap[]
>array to addReference(DataReference, ConstantMap[]), and
>  new ConstantMap(0.5, Display.Red), etc

See SatDisplay.java in the visad/examples directory for a concrete
example of how this is done to turn the map red.

Don Murray                               UCAR Unidata Program
dmurray@xxxxxxxxxxxxxxxx                        P.O. Box 3000
(303) 497-8628                              Boulder, CO 80307
Unidata WWW Server               http://www.unidata.ucar.edu/
McIDAS Demonstration Machine  http://mcdemo.unidata.ucar.edu/