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Content-type: text/html
<HTML><HEAD><TITLE>Manpage of VOTSORT</TITLE>
</HEAD><BODY>
<H1>VOTSORT</H1>
Section: User Commands (1)<BR>Updated: Feb 2013<BR><A HREF="#index">Index</A>
<A HREF="http://localhost/cgi-bin/man/man2html">Return to Main Contents</A><HR>
<A NAME="lbAB"> </A>
<H2>NAME</H2>
votsort - Extract the main positional columns from a VOTable
<P>
<A NAME="lbAC"> </A>
<H2>SYNOPSIS</H2>
<B>votsort</B> [<I>-opts</I>] votable.xml
<P>
<A NAME="lbAD"> </A>
<H2>OPTIONS</H2>
The <I>votsort</I> task accepts the following options:
<DL COMPACT>
<DT><B>-h, --help</B>
<DD>
Print a help summary to the terminal and exit. No processing is done
following this flag.
<P>
<DT><B>-c </B><I>N</I>,--col <I>N</I>
<DD>
Sort by column number <I>N</I> (0-indexed).
<DT><B>-d,--desc</B>
<DD>
Sort in descending order.
<DT><B>-f </B><I>FORMAT</I>,--fmt <I>FORMAT</I>
<DD>
Output format of sorted table. See description below for list of formats.
<DT><B>-o </B><I>NAME</I>,--output <I>NAME</I>
<DD>
Output name of sorted file, if not specified results are written to stdout.
<DT><B>-s,--string</B>
<DD>
Perform a string sort of the columns.
<DT><B>-t </B><I>N</I>,--top <I>N</I>
<DD>
Print the top <I>N</I> rows of the sorted table.
<DT><B>-i </B><I>N</I>,--indent <I>N</I>
<DD>
XML indention level when writing a new XML document.
<DT><B>-n,--noheader</B>
<DD>
Suppress header information for formats other than XML and FITS.
<DT><B>-N </B><I>NAME</I>,--name <I>NAME</I>
<DD>
Sort by column with the name=<I>NAME</I> attribute.
<DT><B>-I </B><I>ID</I>,--id <I>ID</I>
<DD>
Sort by column with the id=<I>ID</I> attribute.
<DT><B>-U </B><I>UCD</I>,--ucd <I>ucd</I>
<DD>
Sort by column with the ucd=<I>UCD</I> attribute.
<P>
<P>
</DL>
<A NAME="lbAE"> </A>
<H2>DESCRIPTION</H2>
The <I>votsort</I> task is used to sort the rows of a VOTable either by
explicit column number (i.e. the <I>-c</I> flag), as a simple string sort
(i.e. the <I>-s</I> flag), or by an explicit 'name', 'id' or 'ucd' attribute
of the <FIELD> elements (the <I>-N</I>, <I>-I</I> and <I>-U</I> flags
respectively). If no column is specified explicitly by number or attribute,
then the first column will be used for sorting. By default, columns are
sorted in ascending order, the
<I>-d</I> flag can be used to force a descending sort of the column.
<P>
Output is written to the stdout unless the <I>-o</I> flag is used to
name a specific output file. By default, a new VOTable will be written,
the <I>-f</I> flag can be used to specify a new format. Allowed formats
include:
<P>
<I>vot</I>
A new VOTable
<I>asv</I>
ASCII-separated (i.e. whitespace) values.
<I>bsv</I>
Bar-separated values.
<I>csv</I>
Comma-separated values
<I>tsv</I>
Tab-separated values
<I>html</I>
Standalone HTML document (entire table)
<I>shtml</I>
Single HTML table
<I>fits</I>
FITS bintable
<I>ascii</I>
ASV alias
<I>xml</I>
VOTable alias
<I>raw</I>
VOTable alias
<P>
For formats such as CSV that normally
include column headers, the <I>-n</I> (or <I>--noheader</I>) flag may be used
to suppress this header. The FITS file produced will be an MEF containing
a bintable extension for each VOTable "<TABLE>" element. Column types and
names in this case come from the VOTable "<FIELD>" attributes.
<P>
If no input file is specified the VOTable will be read from the stdin,
results will be written to stdout unless the <I>-o</I> (or <I>--output</I>)
names an output file. The task will only process a single VOTable and may
not be used to convert multiple files in a single call.
<P>
<A NAME="lbAF"> </A>
<H2>RETURN STATUS</H2>
On exit the <B>votsort</B> task will return a zero indicating success, or a
one indicating an error.
<P>
<A NAME="lbAG"> </A>
<H2>EXAMPLES</H2>
<DL COMPACT>
<DT>1) Sort a VOTable based on first column<DD>
<P>
<PRE>
% votsort test.xml
% votsort <A HREF="http://generic.edu/test.xml">http://generic.edu/test.xml</A>
% cat test.xml | votsort -o sort_test.xml
</PRE>
<P>
A string sort will be done automatically if this is a string-valued column, otherwise a numeric sort is done.
<DT>2) Sort a VOTable based on the magnitude column<DD>
<P>
<PRE>
% votsort --name=V test.xml
</PRE>
<DT>3) Same as above, select 10 faintest stars<DD>
<P>
<PRE>
% votsort --name=V --desc --top=10 test.xml
</PRE>
<DT>4) String sort based on object name, output as CSV<DD>
<P>
<PRE>
% votsort -s -f csv test.xml
% votsort --string --fmt=csv test.xml
</PRE>
</DL>
<A NAME="lbAH"> </A>
<H2>BUGS</H2>
No known bugs with this release.
<A NAME="lbAI"> </A>
<H2>Revision History</H2>
Feb 2013 - First public release
<A NAME="lbAJ"> </A>
<H2>Author</H2>
Michael Fitzpatrick (<A HREF="mailto:fitz@noao.edu">fitz@noao.edu</A>), Feb 2013
<A NAME="lbAK"> </A>
<H2>SEE ALSO</H2>
votget, votinfo, votcnv, votpos, votstat
<P>
<HR>
<A NAME="index"> </A><H2>Index</H2>
<DL>
<DT><A HREF="#lbAB">NAME</A><DD>
<DT><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT><A HREF="#lbAD">OPTIONS</A><DD>
<DT><A HREF="#lbAE">DESCRIPTION</A><DD>
<DT><A HREF="#lbAF">RETURN STATUS</A><DD>
<DT><A HREF="#lbAG">EXAMPLES</A><DD>
<DT><A HREF="#lbAH">BUGS</A><DD>
<DT><A HREF="#lbAI">Revision History</A><DD>
<DT><A HREF="#lbAJ">Author</A><DD>
<DT><A HREF="#lbAK">SEE ALSO</A><DD>
</DL>
<HR>
This document was created by
<A HREF="http://localhost/cgi-bin/man/man2html">man2html</A>,
using the manual pages.<BR>
Time: 05:13:27 GMT, April 14, 2013
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