[Chimera-users] reporting sigma values for electron density maps

[David Chenoweth]

Hi!

Can you please let me know if there is a way to report or set the  
sigma value for an electron density map from a high resolution crystal  
structure. I am using a ccp4 FWT.map and DELFWT.map file for  
structures <1.2 angstrom resolution. Can I somehow find the sigma  
value that corresponds to the Level setting in the Volume viewer?

Thanks,
Dave Chenoweth

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David M. Chenoweth
California Institute of Technology
Division of Chemistry and Chemical Engineering
Mail Code: 164-30
1200 California Boulevard, 91125 Pasadena
California, USA

Phone: 626-395-6074
Email: dchen at caltech.edu
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