Difficult datasets: Difference between revisions

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(New page: Small-molecule and low resolution protein datasets have few reflections per frame. The following parameters then may be adjusted (typical values are given): # NBATCH=2 ! to reduce the n...)
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Revision as of 15:22, 22 December 2009

Small-molecule and low resolution protein datasets have few reflections per frame. The following parameters then may be adjusted (typical values are given):

  1. NBATCH=2  ! to reduce the number of scale factors
  2. DELPHI=45  ! to base reflection profiles and refinements on more reflections
  3. REFINE(INTEGRATE)= ! do not refine anything

It may be tried to recycle GXPARM.XDS to XPARM.XDS, and to grab the lines e.g.

BEAM_DIVERGENCE=   2.067  BEAM_DIVERGENCE_E.S.D.=   0.207
REFLECTING_RANGE=  2.303  REFLECTING_RANGE_E.S.D.=  0.329

from INTEGRATE.LP and to insert them into XDS.INP .