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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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	<TITLE>rrdFlot module</TITLE>
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<H1 CLASS="western">rrdFlot module</H1>
<TABLE WIDTH=50% CELLPADDING=2 CELLSPACING=2>
	<TR>
		<TD>
			<HR>
			<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>
			<HR>
		</TD>
	</TR>
</TABLE>
<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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				<TH WIDTH=20%>
					<P ALIGN=LEFT>Argument</P>
				</TH>
				<TH WIDTH=80%>
					<P ALIGN=LEFT>Description</P>
				</TH>
			</TR>
		</THEAD>
		<TBODY>
			<TR VALIGN=TOP>
				<TD WIDTH=20%>
					<P>html_id</P>
				</TD>
				<TD WIDTH=80%>
					<P>ID of a HTML element, possibly a DIV.</P>
				</TD>
			</TR>
			<TR VALIGN=TOP>
				<TD WIDTH=20%>
					<P>rrd_file</P>
				</TD>
				<TD WIDTH=80%>
					<P>An object of type <A HREF="rrdFile_js.html#RRDFile">RRDFile</A>, or equivalent.</P>
				</TD>
			</TR>
			<TR VALIGN=TOP>
				<TD WIDTH=20%>
					<P>graph_options (optional)</P>
				</TD>
				<TD WIDTH=80%>
					<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>
				</TD>
			</TR>
			<TR VALIGN=TOP>
				<TD WIDTH=20%>
					<P>ds_graph_options (optional)</P>
				</TD>
				<TD WIDTH=80%>
					<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'
   }
</PRE></P>
				</TD>
			</TR>
			<TR VALIGN=TOP>
				<TD WIDTH=20%>
					<P>rrdflot_defaults (optional)</P>
				</TD>
				<TD WIDTH=80%>
					<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. 
     multi_rra: false      //"true" appends the name of the RRA consolidation function (CF) 
                           //(AVERAGE, MIN, MAX or LAST) to the name of the RRA. Useful for 
                           //RRAs over the same interval with different CFs.  
   }
</PRE></P>
				</TD>
			</TR>
      </TABLE>
</DIV>
<P>Once instatiated, the object will automatically draw the plot and handle user interaction.</P>
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                <TD>
                        <HR>
                        <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>.
                        </P>
                        <HR>
                </TD>
        </TR>
</TABLE>

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