Re: [phenixbb] does phenix.refine ignore F-obs, SIGF-obs?

Hi Scott,

Can phenix.refine be directed to use F-obs <= 0?

No. See: http://www.phenix-online.org/version_docs/1.6.1-336/refinement.htm section "Remark on using amplitudes (Fobs) vs intensities (Iobs)".

in particular can either of these flags be given slight negative numbers? input.xray_data.sigma_fobs_rejection_criterion= -0.1 input.xray_data.sigma_iobs_rejection_criterion= -0.1

BTW what does this flag do?

It rejects reflections by sigma. In the past people used to cut the data at 2sigma or so. It is 0 by default in phenix.refine. Pavel.