Hi Kevin, Please try the proposed fix at: ftp://ftp.ssec.wisc.edu/pub/visad-2.0/untested/VisADGeometryArray.java Note this is incorporated in the visad.jar and visad_src-2.0.jar files at ftp://ftp.ssec.wisc.edu/pub/visad-2.0/untested/. If this doesn't fix it, then please send me the test program. Cheers, Bill > Thanks for the fix on this. The fixed UnionSet is allowing me to choose > a ConstantMap color, but when I add an Alpha parameter, it does not > behave as it should. > > Using 2 different filled Irregular2DSets, each with its own ConstantMap, > I get this: > > http://www.cimms.ou.edu/~kmanross/VCPRPE/VisADSamples/kiwaWedges_OK.gif > > However, when I make a UnionSet with the two Irregular2DSets and using > one of the ConstantMaps, I get this: > > http://www.cimms.ou.edu/~kmanross/VCPRPE/VisADSamples/kiwaWedges_usetError.gif > > Even a UnionSet with a single Irregular2Dset wedge produces the same > produces the latter result. > > If you would like, I can send you my test code.