[Chimera-users] Volume Subtractions

Tom Goddard goddard at cgl.ucsf.edu
Fri Apr 30 14:44:23 PDT 2010

Hi Murali,

   Besides the "vop subtract" command that Elaine mentioned you might be 
interested in the "morph map" capability to animation an interpolation 
between the two maps.


This is good for seeing the differences in the two maps.  There is a 
command (vop morph) and a dialog (Tools / Volume Data / Morph Map) for 
doing this.

   If your maps do not have the same normalization you can use the 
"minRMS true" option to vop subtract to scale one so that the root mean 
square difference is minimized.


> Dear Chimera users/developers,
> I have two EM density maps (in mrc format) of a complex with different 
> conformations.  I want to subtract one density from another.  I am 
> wondering if it is possible in Chimera to subtract the densities?
> Cheers,
> Murali

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