[phenixbb] map coeffs?

Pavel Afonine pafonine at lbl.gov
Tue Feb 3 09:31:38 PST 2009

Hi Walter,

yes, the latest version of phenix.refine creates four maps:

2mFo-DFc and mFo-DFc, where missing Fo are filled with DFc,


2mFo-DFc and mFo-DFc, where Fo are taken and used "as is" (the 
corresponding coefficients in "_map_coeffs.mtz" file are marked with 

Maps computed with "filled" Fobs are supposed to be better looking (for 
incomplete datasets) and may help in resolving unclear / ambiguous 
densities. However, you need to use regular maps (computed with 
untouched Fobs) for presenting pictures in publications.


On 2/3/2009 9:13 AM, Walter Novak wrote:
> Hi all,
> I am doing joint X-ray neutron refinement, and in the 1.4-3 version I  
> now get twice the number of choices of map coefficients when opening  
> the mtz. Half now have "no_fill" with them. I am assuming that the  
> difference between maps has something to do with missing Fobs, is that  
> right? Which maps should I be looking at then?
> Thanks,
> Wally
> Walter R.P. Novak, Ph.D.
> Postdoctoral Fellow
> Rosenstiel Basic Medical Research Center
> Brandeis University
> 415 South St. MS 029
> Waltham, MA 02454-9110
> Phone: (781) 736-4944
> Fax: (781) 736-2405
> _______________________________________________
> phenixbb mailing list
> phenixbb at phenix-online.org
> http://www.phenix-online.org/mailman/listinfo/phenixbb

More information about the phenixbb mailing list