starbase

classifytable - group together rows in a table into similar classes.

SYNOPSIS

classifytable *table* *search_expression*

DESCRIPTION
-----------

`classifytable` is used to classify or group the rows of a table into sets with
similar column values.  Each row in the output table is labeled with a column
"SetNumber" to indicate the class to which it belongs.  Rows can be classified
by the matching criteria supported in the [search](search.html) program.


EXAMPLES
--------

Place all target within 30 seconds of each other in the same class.

    john@panic: classifytable stars.tab -S2 RA Dec 0:00:30 ```

DETAILS

~classifytable~ is a shell script which combines search, sort and compute:

#!/bin/sh #

search -s $* < $1
| sorttable -u headline < $1
| sorttable -n SetNumber
| reseqtable