[Chimera-users] question concerning volumetric data

Thomas Goddard goddard at cgl.ucsf.edu
Mon Mar 22 11:38:23 PDT 2010

Hi Stefan,

   I guess the voxel size isn't set in your EM map file header.  Use the 
Volume Dialog "Coordinates" panel and set the voxel size (i.e. grid 
spacing) to the correct value.  If it says 1.0 now (typical for map 
headers that don't set the value), you probably want to change it 3.6.

   You would have to save a new map file after making this change, or 
save a Chimera session to avoid this nuisance in the future.


> Hi, I have a EM map, spider file and the data are scaled by a factor of
> 3.6. I need to expand the map by this factor. How can I do this with
> chimera? Thank you very much for your help Best Regards Stefan

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