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<TITLE>rrdFlot module</TITLE>
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<H1 CLASS="western">rrdFlot module</H1>
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<P>The <A HREF="../../src/lib/rrdFlot.js">rrdFlot Javascript
module</A> implements a class used to represents a
<A HREF="http://oss.oetiker.ch/rrdtool/">RDD archive</A>
as a <A HREF="http://code.google.com/p/flot/">Flot</A> plot.</P>
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<H2 CLASS="heading-2-western">Overview</H2>
<P>This module provide a single class: <A HREF="#rrdFlot">rrdFlot</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="rrdFlot"></A>Class rrdFlot</H2>
<P>The rrdFlot constructor has two to four 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_file</P>
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<P>An object of type <A HREF="rrdFile_js.html#RRDFile">RRDFile</A>, or equivalent.</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},
};
</PRE></P>
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<P>ds_graph_options (optional)</P>
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<P>Dictionary of graphing options. This must be a dictionary of DS_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 ds_name // this is what is displayed in the checkboxes
checked: first_ds_in_list? // boolean
label: title or ds_name // this is what is displayed in the legend
color: ds_index // see Flot docs for details
lines: { show:true } // see Flot docs for details
yaxis: 1 // can be 1 or 2
stack: 'none' // other options are 'positive' and 'negative'
}
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<P>rrdflot_defaults (optional)</P>
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<P>Dictionary of rrd_flot options.
<P>The recognized elements and the default values are:
<PRE>
{
legend: "Top" //Starting location of legend. Options are:
//"Top","Bottom","TopRight","BottomRight","None".
num_cb_rows: 12 //How many rows of DS checkboxes per column.
multi_ds: false //"true" appends the name of the aggregation function to the
//name of the DS element. Useful for when an element is displayed
//more than once but under different aggregation functions.
}
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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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