[Chimera-users] technical questions about volume viewer in chimera

Elaine Meng meng at cgl.ucsf.edu
Wed Sep 1 10:22:26 PDT 2010

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:


I hope this helps,
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

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