Hi, Bill, Can the color scale be visualized as a color scale bar in a similar way as that in Matlab? Thanks a lot, Best, Charlie > > The 2nd problem: Can we use the SAME color scale for several Visad 3D > > displays? (It seems Visad always uses red for the highest altitude and > > blue for the lowest altitude for the current display, so any display's > > color ranges from red to blue.) > > Yeah, you can explicitly set the color scale by calling > setRange() on the ScalarMaps to RGB. To make displays > have the same color scale, pass the same range to setRange() > for the ScalarMaps to RGB in each display.