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Man page of X-GEN
X-GEN
Section: X-GEN Commands (1)
Updated: April 2005
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NAME
X-GEN - prax
SYNOPSIS
prax
[-p]
DESCRIPTION
"prax" is a utility that prints out information regarding axial reflections,
i.e. reflections of the form (h, 0, 0), (0, k, 0), or (0, 0, l).
It can do this either for the output of "predict," i.e. a USPOTLIST file,
or for the output of "reduce" or "mrmerge," i.e. a MULTIREF.
In the former case one is presumably interested in figuring out where the
axial reflections will appear within a run; in the latter case one is
interested in knowing the intensities of the axial reflections. The most
common application of "prax" is in investigating screw-axis intensities;
if the spacegroup is known to be 150, 152, or 154 (P321, P3(1)21, or P3(2)21),
and all the (0, 0, l) reflections with l not equal to 3*n are smaller than
sigma, then the spacegroup is almost certainly 152 or 154.
In all cases the results are written to the X-GEN log file, i.e. a file
with environment variable name XLOG.
The MULTIREF choice is more common, so it is the default. See "usage" to
see how to ask for a prediction output.
The output is identical in format to that produced by "xdump" for either
a MULTIREF or a USPOTLIST.
OPTIONS
- -p
-
Use the output of prediction, i.e. a file with environment variable
USPOTLIST, as input. Otherwise MULTIREF is assumed.
REPORTING BUGS
Report bugs to Andy Howard at howard@iit.edu or 312-567-5881.
COPYRIGHT
Copyright © 2002, Illinois Institute of Technology.
See the file 'LICENSE' for information on usage and redistribution
of this file, and for a DISCLAIMER OF ALL WARRANTIES
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- OPTIONS
-
- REPORTING BUGS
-
- COPYRIGHT
-
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