Hi Alex, The header is read from at least some formats to set the map origin and voxel size. Tom G, our expert on this subject, is away until after Sept 10, but perhaps these previous posts will answer your questions: <http://plato.cgl.ucsf.edu/pipermail/chimera-users/2006-September/000961.html> <http://plato.cgl.ucsf.edu/pipermail/chimera-users/2006-September/000964.html> <http://plato.cgl.ucsf.edu/pipermail/chimera-users/2006-September/000965.html> I hope this helps, Elaine ---------- Elaine C. Meng, Ph.D. UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab Department of Pharmaceutical Chemistry University of California, San Francisco On Sep 1, 2010, at 4:31 AM, Alex Shkumatov wrote:
Hallo Perhaps, this has been on the forum before, but I could not find the answers to my questions: 1. Some EM density maps have a header. I wonder how Chimera recognizes it and calculates map dimensions? 2. Does chimera take default voxel size from header of EM file? Thanks in advance Alex