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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
    <TITLE>Chart::Graph::xrt()</TITLE>
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    <table border=0 cellspacing=0 cellpadding=50 width="80%">
      <tr>
        <td>
          <CENTER><H1>Chart::Graph::xrt()</H1></CENTER>
        </td>
      </tr>
    </table>
    <br>
    <hr>
    <UL>
      <LI><A HREF="#Description">Description</A></LI> 
      <LI><A HREF="#Calling xrt()">Calling xrt()</A></LI> 
      <LI><A HREF="#Arguments">Arguments</A></LI> 
      <LI><A HREF="#Example">Example</A></LI></UL>
    <HR>
    <H2><A NAME="Description">Description</A></H2>
    <P>
      <B>xrt()</B> is a function in module Chart::Graph that lets you 
      generate graphs on the fly in perl. It was written as a front-end 
      application to gnuplot for hassle-free generation of graphs. You 
      would normally use xrt to generate 3D graphs.
    </P>
    <HR>
    <H2><A NAME="Calling xrt()">Calling xrt()</A></H2>
    <pre>
#make sure to include Chart::Graph
use Chart::Graph;
xrt(\%options, \@data_set);
#say for example we have a 3 by 4 matrix -> dataxy
xrt(\%options, 
        [[data11, data12, data13, data14],
        [data21, data22, data23, data24],
         [data31, data32, data33, data34]])
    </pre>
<HR>
    <H2><A NAME="Arguments">Arguments</A></H2>
    <P>
      <I>%options</I>
    <TABLE BORDER="1">
      <TR><TD><B>Name</B></TD> <TD><B>Options</B></TD> <TD><B>Default</B></TD></TR> 
      <TR><TD>"output file"</TD> <TD>(set your own)</TD> <TD>"xrt.gif"</TD></TR> 
      <TR><TD>"x-axis title"</TD> <TD>(set your own)</TD> <TD>"x-axis"</TD></TR> 
      <TR><TD>"y-axis title"</TD> <TD>(set your own)</TD> <TD>"y-axis"</TD></TR> 
      <TR><TD>"z-axis title"</TD> <TD>(set your own)</TD> <TD>"z-axis"</TD></TR> 
      <TR><TD>"x-min"</TD> <TD>"0" or "1"(normally 0)</TD> <TD>"0"</TD></TR> 
      <TR><TD>"y-min"</TD> <TD>"0" or "1"(normally 0)</TD> <TD>"0"</TD></TR> 
      <TR><TD>"x-step"</TD> <TD>"0" or "1"(normally 1)</TD> <TD>"1"</TD></TR> 
      <TR><TD>"y-step"</TD> <TD>"0" or "1"(normally 1)</TD> <TD>"1"</TD></TR> 
      <TR><TD>"x-ticks"</TD> <TD>(set your own)</TD> <TD>none</TD></TR> 
      <TR><TD>"y-ticks"</TD> <TD>(set your own)</TD> <TD>none</TD></TR> 
      <TR><TD>"header"</TD> <TD>(set your own)</TD> <TD>"header"</TD></TR> 
      <TR><TD>"footer"</TD> <TD>(set your own)</TD> <TD>"footer"</TD></TR>
    </TABLE>
    <BR>
    <I>\@data_set:</I> an x by y matrix of doubles-- see example for syntax<HR>
    <H2><A NAME="Example">Example</A></H2>
    <pre>
#make sure to include Chart::Graph
use Chart::Graph;
#using a 3 by 4 matrix for the data set
xrt({"x-ticks"=>["a", "b", "c"],
         "y-ticks"=>["w", "x", "y", "z"],},
        [["10", "15", "23", "10"],
         ["4", "13", "35", "45"],
         ["29", "15", "64", "24"]]);
    </pre>
    <IMG BORDER="1" SRC="xrt.gif" ALT="Graph of eample using xrt"><HR>
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