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<TITLE>rrdFlotMatrix module</TITLE>
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<H1 CLASS="western">rrdFlotMatrix module</H1>
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<P>The <A HREF="../../src/lib/rrdFlotMatrix.js">rrdFlotMatrix Javascript
module</A> implements a class used to represents a DS from a list of similar
<A HREF="http://oss.oetiker.ch/rrdtool/">RDD archives</A>
as a <A HREF="http://code.google.com/p/flot/">Flot</A> plot.</P>
<P>All RRDs must have the same step, the same DS names and the same number of RRAs.</P>
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<H2 CLASS="heading-2-western">Overview</H2>
<P>This module provide a single class: <A HREF="#rrdFlotMatrix">rrdFlotMatrix</A>.</P>
<P>Given a
<A HREF="rrdFile_js.html#RRDFile">RRDFile</A> object, this class
creates an interactive
<A HREF="http://code.google.com/p/flot/">Flot</A> plot.</P>
<P>In order to use this module, you also need to include:
<UL>
<LI><A HREF="rrdFlotSupport_js.html">rrdFlotSupport.js</A>
<LI><A HREF="http://code.google.com/p/flot/">jquery.flot.js</A>
<LI><A HREF="http://jquery.com/">jquery.js</A>
</UL></P>
<H2 CLASS="heading-2-western"><A NAME="rrdFlotMatrix"></A>Class rrdFlotMatrix</H2>
<P>The rrdFlotMatrix constructor has two to five arguments:</P>
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<P ALIGN=LEFT>Argument</P>
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<P ALIGN=LEFT>Description</P>
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<P>html_id</P>
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<P>ID of a HTML element, possibly a DIV.</P>
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<P>rrd_files</P>
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<P>A list of RRDs. Each element of the list contains a [rrd_id,rrd_file] pair.
<ul>
<li>rrd_id - Logical name for the RRD.
<li>rrd_file -An object of type <A HREF="rrdFile_js.html#RRDFile">RRDFile</A> or equivalent.
</ul>
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<P>ds_list (optional)</P>
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<P>A list of DSes. Each element of the list contains a [ds_id,ds_title] pair.
<ul>
<li>ds_id - Logical name for the DS (as accepted by
<A HREF="rrdFile_js.html#RRDFile">RRDFile.getDS()</A>).
<li>ds_title - Name to display to the user.
</ul>
</P>
<P>If undefined, all the DS's of the RRD will be used.</P>
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<P>graph_options (optional)</P>
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<P>Global graphing options. See
<A HREF="http://code.google.com/p/flot/">Flot documentation</A>
for more details.</P>
<P>The recognized elements and the default values are:
<PRE>
graph_options = {
legend: {position:"nw",noColumns:3},
lines: { show:true },
yaxis: { autoscaleMargin: 0.20},
tooltip: true,
tooltipOpts: { content: "<h4>%s</h4> Value: %y.3" }, // %s: series text, %y.3: y-value toPrecision(3)
};
</PRE></P>
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<P>rrd_graph_options (optional)</P>
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<P>Dictionary of graphing options. This must be a dictionary of rrd_id.
Each element of the dictionary contains graphing options. See
<A HREF="http://code.google.com/p/flot/">Flot documentation</A>
for more details.</P>
<P>The recognized elements and the default values are:
<PRE>
{
title: label or rrd_name // this is what is displayed in the checkboxes
checked: true // boolean
label: title or rrd_name // this is what is displayed in the legend
color: rrd_index // see Flot docs for details
lines: { show:true, fill: true, fillColor:color } // see Flot docs for details
}
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<P>Once instatiated, the object will automatically draw the plot and handle user interaction.</P>
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<P>This module is part of the <A HREF="index.html">javascriptRRD
package</A> hosted at <A HREF="http://javascriptrrd.sourceforge.net/">http://javascriptrrd.sourceforge.net</A>.
<BR>It is licensed under the <A HREF="http://www.opensource.org/licenses/mit-license.php">MIT
license</A>.
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