I guess you mean higher redundancy/completeness in the HIGHER resolution
shells.
Rather than decreasing that sigma cutoff, a better solution is to increase
the profile fitting radius. The default value is fine for most lab-based
detectors, but too small for most (larger) synchrotron detectors.
What is the Sigma Cutoff that one should use for Data Processing using
HKL2000.
Is there a minimum or maximum value.
Also if there is a variation then what all does it depend on.
Thanks in Advance for your help.
Mariah
--
Mariah Jones
Department of Biochemistry
University of Florida
Dear Mariah:
On Oct 22, 2009, at 7:18 AM, protein.chemist protein.chemist wrote:
What is the Sigma Cutoff that one should use for Data Processing using
HKL2000.
None.
Is there a minimum or maximum value.
There are those who suggest negative intensities require a good
imagination when
On Thursday 22 October 2009, protein.chemist protein.chemist wrote:
What is the Sigma Cutoff that one should use for Data Processing using
HKL2000.
You need to narrow your question. Which sigma cutoff are you talking about?
Do you mean the one on the Index panel?
It controls the automatic
The default sigma cutoff (in denzo) is -3 and I wouldn't override that
without good reason. The cut-off is applied before averaging equivalent
reflections (but after adding partials?). If you reject all negative
observations of a particular reflection and average the remaining
positive
