[phenixbb] Resolution cutoffs. Always debated?

Francis E Reyes Francis.Reyes at Colorado.EDU
Tue Aug 19 15:25:00 PDT 2008

I need to put this in front of (this) crystallographic community.

What are the criteria for cutting a resolution for data reduction ?

Rmerge, I/sig, mean I/sig, completeness... more?

I once believed that I/Sig (not averaged) greater than 2 was the  
cutoff, but I've read online (particularly http://www.mail-archive.com/ccp4bb@dl.ac.uk/msg02576.html) 
  that this is no longer the case because of maximum likelihood. I  
would love to know why this is the case as well as poll the community  
on how they cut off their data.



Francis Reyes M.Sc.
215 UCB
University of Colorado at Boulder

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