Content-type: text/html 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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Time: 02:08:09 GMT, October 03, 2005