Man page of X-GEN
Section: X-GEN Commands (1)
Updated: April 2005
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X-GEN - cutoff
[-cd] [lowres] [highres]
"cutoff" reads a MULTIREF with environment variable name MULTIREF
and writes out another with environment variable MREFOUT.
Reflections that lie within the user-specified resolution
limits are output, and reflections outside those limits are not.
n.b. If only one of the limits (see "resmin" and "resmax", below)
is specified, it is taken to be a high-resolution cutoff.
If both are specified but in opposite order (high before low),
the program will reverse them for you.
Ordinarily the `cutoff' operation keeps reflections between
the stated resolution limits and eliminates or flags those outside
the limits. This flag causes the operation to reverse its logic:
if this Boolean is on, the program retains the reflections outside
the stated resolution limits and eliminates those within the limits.
This allows the user to remove reflections in a narrow shell that
have been compromised by ice ring streaks, for example.
Ordinarily the `cutoff' operation writes out a MULTIREF in
which ONLY the reflections that lie inside the resolution limits
are written out. If this Boolean flag is specified the
out-of-bounds reflections are written out, but with their scale
factors negated so that they are not considered in scaling.
This specifies the low-resolution cutoff in Angstroms,
below which reflections will not be output. Default value: 999.
This specifies the high-resolution cutoff in Angstroms,
above which reflections will not be output. Default value: 0.
- cutoff 20 3.2
Read a MULTIREF and write another which contains
only the data between 20 and 3.2 Angstroms:
- cutoff -d 9 2.5
Read a MULTIREF and write out another containing
the data between 9 and 2.5 Angstroms, but with the
data outside that range flagged rather than deleted.
Report bugs to Andy Howard at firstname.lastname@example.org or 312-567-5881.
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
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Time: 02:08:09 GMT, October 03, 2005