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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" /><title>5.18. Example - Two Plots on One Image</title><link rel="stylesheet" type="text/css" href="phplotdoc.css" /><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><link rel="home" href="index.html" title="PHPlot Reference Manual" /><link rel="up" href="examples.html" title="Chapter 5. PHPlot Examples" /><link rel="prev" href="ex-thinbarline2.html" title="5.17. Example - Thin Bar Line Plot, Wider Lines" /><link rel="next" href="ex-bars4.html" title="5.19. Example - Bar Chart with Data Value Labels" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">5.18. Example - Two Plots on One Image</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ex-thinbarline2.html">Prev</a> </td><th width="60%" align="center">Chapter 5. PHPlot Examples</th><td width="20%" align="right"> <a accesskey="n" href="ex-bars4.html">Next</a></td></tr></table><hr /></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="ex-twoplot1"></a>5.18. Example - Two Plots on One Image</h2></div></div></div><p>
This example shows multiple plots tiled on a single image.
To place multiple plots on an image, first disable automatic output with
<a class="xref" href="SetPrintImage.html" title="SetPrintImage"><span class="refentrytitle">SetPrintImage</span></a>(False). Then define each plot area using
<a class="xref" href="SetPlotAreaPixels.html" title="SetPlotAreaPixels"><span class="refentrytitle">SetPlotAreaPixels</span></a> and create the plot.
Finish each plot with <a class="xref" href="DrawGraph.html" title="DrawGraph"><span class="refentrytitle">DrawGraph</span></a>.
At the end, <a class="xref" href="PrintImage.html" title="PrintImage"><span class="refentrytitle">PrintImage</span></a> outputs the image containing all
of the plots.
</p><p>
See <a class="xref" href="adv-multiplot.html" title="4.8. Multiple Plots Per Image">Section 4.8, &#8220;Multiple Plots Per Image&#8221;</a> for more information.
</p><div class="example"><a id="example-twoplot1"></a><p class="title"><strong>Example 5.18. Two Plots on One Image</strong></p><div class="example-contents"><div class="informalfigure"><div class="mediaobject"><img src="examples/twoplot1.png" alt="Two Plots on One Image Example" /></div></div><pre class="programlisting">&lt;?php
# PHPlot Example: Two plots on one image
require_once 'phplot.php';

$data1 = array(        # Data array for top plot: Imports
  array('1981', 5996),  array('1982', 5113),  array('1983', 5051),
  array('1984', 5437),  array('1985', 5067),  array('1986', 6224),
  array('1987', 6678),  array('1988', 7402),  array('1989', 8061),
  array('1990', 8018),  array('1991', 7627),  array('1992', 7888),
  array('1993', 8620),  array('1994', 8996),  array('1995', 8835),
  array('1996', 9478),  array('1997', 10162), array('1998', 10708),
  array('1999', 10852), array('2000', 11459),
);
$data2 = array(        # Data array for bottom plot: Exports
  array('1981', 595),  array('1982', 815),  array('1983', 739),
  array('1984', 722),  array('1985', 781),  array('1986', 785),
  array('1987', 764),  array('1988', 815),  array('1989', 859),
  array('1990', 857),  array('1991', 1001), array('1992', 950),
  array('1993', 1003), array('1994', 942),  array('1995', 949),
  array('1996', 981),  array('1997', 1003), array('1998', 945),
  array('1999', 940),  array('2000', 1040),
);

$plot = new PHPlot(800,600);
$plot-&gt;SetImageBorderType('plain');

# Disable auto-output:
$plot-&gt;SetPrintImage(0);

# There is only one title: it is outside both plot areas.
$plot-&gt;SetTitle('US Petroleum Import/Export');

# Set up area for first plot:
$plot-&gt;SetPlotAreaPixels(80, 40, 740, 350);

# Do the first plot:
$plot-&gt;SetDataType('text-data');
$plot-&gt;SetDataValues($data1);
$plot-&gt;SetPlotAreaWorld(NULL, 0, NULL, 13000);
$plot-&gt;SetDataColors(array('blue'));
$plot-&gt;SetXTickLabelPos('none');
$plot-&gt;SetXTickPos('none');
$plot-&gt;SetYTickIncrement(1000);
$plot-&gt;SetYTitle("IMPORTS\n1000 barrels/day");

$plot-&gt;SetPlotType('bars');
$plot-&gt;DrawGraph();

# Set up area for second plot:
$plot-&gt;SetPlotAreaPixels(80, 400, 740, 550);

# Do the second plot:
$plot-&gt;SetDataType('text-data');
$plot-&gt;SetDataValues($data2);
$plot-&gt;SetPlotAreaWorld(NULL, 0, NULL, 1300);
$plot-&gt;SetDataColors(array('green'));
$plot-&gt;SetXTickLabelPos('none');
$plot-&gt;SetXTickPos('none');
$plot-&gt;SetYTickIncrement(200);
$plot-&gt;SetYTitle("EXPORTS\n1000 barrels/day");

$plot-&gt;SetPlotType('bars');
$plot-&gt;DrawGraph();

# Output the image now:
$plot-&gt;PrintImage();
</pre></div></div><br class="example-break" /></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ex-thinbarline2.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="examples.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ex-bars4.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">5.17. Example - Thin Bar Line Plot, Wider Lines </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> 5.19. Example - Bar Chart with Data Value Labels</td></tr></table></div></body></html>