Hi Hernando, The way to get multiple color zones is to get all of the markers (that you want to make zones around) selected at the same time, and then use Color Zone in one step. The markers can have multiple different colors, resulting in differently colored volume zones. However, this means you can't use different radii for different markers. I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. meng@cgl.ucsf.edu UCSF Computer Graphics Lab and Babbitt Lab Department of Pharmaceutical Chemistry University of California, San Francisco http://www.cgl.ucsf.edu/home/meng/index.html On Aug 19, 2006, at 11:41 AM, hsosa@aecom.yu.edu wrote:

Is is possible to use different colors for different Volume zones ?.

I have a volume (MRC format) and have defined two marker sets using the Volume-Path-Tracer. Then I select one of the path and colored the surface volume around using the Volume Color Zone utility. This work fine but then if I selected the other markers and do the same the volume close to the new markers get colored but anything else get uncolored, including the areas previously colored. Am I doing something wrong ?. Can I color several Volume zones independently ?

Thanks

Hernando