<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<!--Converted with LaTeX2HTML 2008 (1.71)
original version by: Nikos Drakos, CBLU, University of Leeds
* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan
* with significant contributions from:
Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
<HTML>
<HEAD>
<TITLE>Pseudocolumns</TITLE>
<META NAME="description" CONTENT="Pseudocolumns">
<META NAME="keywords" CONTENT="gnuplot">
<META NAME="resource-type" CONTENT="document">
<META NAME="distribution" CONTENT="global">
<META NAME="Generator" CONTENT="LaTeX2HTML v2008">
<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
<LINK REL="STYLESHEET" HREF="gnuplot.css">
<LINK REL="next" HREF="node154.html">
<LINK REL="previous" HREF="node152.html">
<LINK REL="up" HREF="node151.html">
<LINK REL="next" HREF="node154.html">
</HEAD>
<BODY >
<!--Navigation Panel-->
<A NAME="tex2html3281"
HREF="node154.html">
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A>
<A NAME="tex2html3275"
HREF="node151.html">
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A>
<A NAME="tex2html3269"
HREF="node152.html">
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A>
<A NAME="tex2html3277"
HREF="node1.html">
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A>
<A NAME="tex2html3279"
HREF="node467.html">
<IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="index.png"></A>
<BR>
<B> Next:</B> <A NAME="tex2html3282"
HREF="node154.html">Xticlabels</A>
<B> Up:</B> <A NAME="tex2html3276"
HREF="node151.html">Using</A>
<B> Previous:</B> <A NAME="tex2html3270"
HREF="node152.html">Using_examples</A>
<B> <A NAME="tex2html3278"
HREF="node1.html">Contents</A></B>
<B> <A NAME="tex2html3280"
HREF="node467.html">Index</A></B>
<BR>
<BR>
<!--End of Navigation Panel-->
<H4><A NAME="SECTION040142920000000000000"></A>
<A NAME="pseudocolumns"></A><A NAME="3229"></A>
<A NAME="commands_plot_datafile_using_pseudocolumns"></A><A NAME="plot_datafile_using_pseudocolumns"></A><A NAME="datafile_using_pseudocolumns"></A><A NAME="using_pseudocolumns"></A>
<BR>
Pseudocolumns
</H4>
Expressions in the <B>using</B> clause of a plot statement can refer to additional
bookkeeping values in addition to the actual data values contained in the input
file. These are contained in <TT>"</TT>pseudocolumns<TT>"</TT>.
<BR>
<PRE>
column(0) The sequential order of each point within a data set.
The counter starts at 0 and is reset by two sequential blank
records. The shorthand form $0 is available.
column(-1) This counter starts at 0 and is reset by a single blank line.
This corresponds to the data line in array or grid data.
column(-2) The index number of the current data set within a file that
contains multiple data sets. See `index`.
</PRE>
<BR>
<BR><HR>
<ADDRESS>
2010-08-17
</ADDRESS>
</BODY>
</HTML>
