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== optimizing the parameters for COLSPOT ==
== optimizing the parameters for COLSPOT ==


IDXREF depends on the reflection positions stored in SPOT.XDS . This file is written by COLSPOT, and its contents can be visualized e.g. with GNUPLOT:
IDXREF depends on the reflection positions stored in SPOT.XDS . This file is written by COLSPOT, and its contents is visualized in [[XDSGUI]]'s IDXREF tab (or e.g. with GNUPLOT: plot "SPOT.XDS" using 1:2).
plot "SPOT.XDS" using 1:2
 
Obviously, only if the true reflection pattern is represented well by SPOT.XDS can IDXREF be successful. So, play with the following [http://xds.mpimf-heidelberg.mpg.de/html_doc/xds_parameters.html parameters], and use GNUPLOT to find their influence:
Obviously, only if the true reflection pattern is represented well by SPOT.XDS can IDXREF be successful. So, play with the following [http://xds.mpimf-heidelberg.mpg.de/html_doc/xds_parameters.html parameters], and use XDSGUI to find their influence:
  STRONG_PIXEL=
  STRONG_PIXEL=
  MINIMUM_NUMBER_OF_PIXELS_IN_A_SPOT=  
  MINIMUM_NUMBER_OF_PIXELS_IN_A_SPOT=  
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