include/lib/jqplot/usage.txt

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Title: jqPlot Usage

Usage Documentation:

Introduction:

jqPlot is a jQuery plugin to generate pure client-side javascript charts in your web pages. 

The jqPlot home page is at <http://www.jqplot.com/>.  

The project page and downloads are at <http://www.bitbucket.org/cleonello/jqplot/>.

Below are a few examples to demonstrate jqPlot usage.  These plots are shown as static images.  
Many more examples of dynamically rendered plots can be seen on the test and examples pages here: <../../tests/>.

Include the Files:

jqPlot requires jQuery (1.4+ required for certain features). jQuery is included in the distribution.  
To use jqPlot include jquery, the jqPlot jQuery plugin, jqPlot css file and optionally the excanvas 
script for IE support in your web page.  Note, excanvas is required only for IE versions below 9.  IE 9 includes
native support for the canvas element and does not require excanvas:

> <!--[if lt IE 9]><script language="javascript" type="text/javascript" src="excanvas.js"></script><![endif]-->
> <script language="javascript" type="text/javascript" src="jquery.min.js"></script>
> <script language="javascript" type="text/javascript" src="jquery.jqplot.min.js"></script>
> <link rel="stylesheet" type="text/css" href="jquery.jqplot.css" />

Add a plot container:

Add a container (target) to your web page where you want your plot to show up.
Be sure to give your target a width and a height:

> <div id="chartdiv" style="height:400px;width:300px; "></div> 

Create a plot:

Then, create the actual plot by calling the 
$.jqplot plugin with the id of your target and some data:

> $.jqplot('chartdiv',  [[[1, 2],[3,5.12],[5,13.1],[7,33.6],[9,85.9],[11,219.9]]]);

Which will produce a 
chart like:

(see images/basicline.png)

Plot Options:

You can customize the plot by passing options to the $.jqplot function.  Options are described in 
<jqPlot Options> in the jqPlotOptions.txt file.  An example of options usage:

> $.jqplot('chartdiv',  [[[1, 2],[3,5.12],[5,13.1],[7,33.6],[9,85.9],[11,219.9]]], 
> { title:'Exponential Line', 
>   axes:{yaxis:{min:-10, max:240}}, 
>   series:[{color:'#5FAB78'}]
> });

Which will produce 
a plot like: