[phenixbb] Twin refinement with anomalous pairs

[Pavel Afonine]

Hi Francis,

by default both F+ and F- are used in phenix.refine. However, you can 
request that the average values, Fobs_ave = (F+ + F-)/2 are used instead 
("xray_data.force_anomalous_flag_to_be_equal_to=False" keyword).

Peter may have more details on how this is handled in twin-refinement.

Pavel.


On 10/20/2008 7:45 AM, Francis E Reyes wrote:
> All
>
> How does phenix.refine handle the twin refinement target when refining 
> against F+/F-?  I'm specifically asking for the proper assignment of 
> F+/F- for twin related reflections (e.g. 10.1107/S0907444902021704). 
>  My data is currently in P41 with friedel pairs as output by scala. 
>
>
> Thanks
>
> FR
>
> ---------------------------------------------
> Francis Reyes M.Sc.
> 215 UCB
> University of Colorado at Boulder
>
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>
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