IRAF help page for package noao.digiphot.ptools, program psort

from NOAO psort -- sort an APPHOT/DAOPHOT database fileUSAGEPARAMETERSDESCRIPTIONEXAMPLESTIME REQUIREMENTSBUGSSEE ALSO

psort -- sort an APPHOT/DAOPHOT database file


USAGE

psort infiles field


PARAMETERS

infiles

The input APPHOT/DAOPHOT databases to be sorted. The sort is performed in place.

field

The field to be sorted on. If the input file is a text database, field may be any quantity defined by the APPHOT/DAOPHOT #K and #N keywords. If the input file is an STSDAS table database field may be any column name. Field may be of type integer or real, in which case a numeric sort is performed, boolean, in which case the boolean constant "no" is assumed to have a smaller value than "yes", or character in which case an alphabetic sort is performed.

ascend = yes

Sort in increasing value order.


DESCRIPTION

PSORT is a simple task which accepts an APPHOT/DAOPHOT database file and sorts it in place based on the value of the selected quantity field. By default the sort is in increasing order of the value of field, but a reverse sort can be performed by setting ascend = no.

If field is a real or integer the sort is numeric, if boolean the constant "no" is assumed to have a smaller value than "yes", if character the sort is alphabetic.

PSORT is a simple CL script which call TXSORT if the input database is a text file and TSORT if the input database is a text file.


EXAMPLES

1. Sort the output of the APPHOT task PHOT in increasing order of the y coordinate.

    pt> psort m92.mag.1 YCENTER

2. Sort the output of the DAOPHOT task ALLSTAR in increasing order of magnitude.

    pt> psort m92.al.1 MAG


TIME REQUIREMENTS


BUGS


SEE ALSO

ptools.txsort, tables.tsort, ptools.tbsort,


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