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<title>Line Charts and Options</title>
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<p>The most basic jqPlot chart takes a series of data and plots a line. No options need to be supplied. Data is passed in as an array of series. A series can be either an array of y values or an array of [x,y] data pairs. If y values only, x values are assigned like 1, 2, 3, ... Note, for this plot you don't need any plugins.</p>
<div id="chart1" style="height:300px; width:500px;"></div>
<pre class="code prettyprint brush: js"></pre>
<p>The following plot uses a number of options to set the title, add axis labels, and shows how to use the canvasAxisLabelRenderer plugin to provide rotated axis labels.</p>
<div id="chart2" style="height:300px; width:500px;"></div>
<pre class="code prettyprint brush: js"></pre>
<p>There are numerous line style options to control how the lines and markers are displayed.</p>
<div id="chart3" style="height:300px; width:500px;"></div>
<pre class="code prettyprint brush: js"></pre>
<script class="code" type="text/javascript">
$(document).ready(function(){
var plot1 = $.jqplot ('chart1', [[3,7,9,1,5,3,8,2,5]]);
});
</script>
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$(document).ready(function(){
var plot2 = $.jqplot ('chart2', [[3,7,9,1,5,3,8,2,5]], {
// Give the plot a title.
title: 'Plot With Options',
// You can specify options for all axes on the plot at once with
// the axesDefaults object. Here, we're using a canvas renderer
// to draw the axis label which allows rotated text.
axesDefaults: {
labelRenderer: $.jqplot.CanvasAxisLabelRenderer
},
// Likewise, seriesDefaults specifies default options for all
// series in a plot. Options specified in seriesDefaults or
// axesDefaults can be overridden by individual series or
// axes options.
// Here we turn on smoothing for the line.
seriesDefaults: {
rendererOptions: {
smooth: true
}
},
// An axes object holds options for all axes.
// Allowable axes are xaxis, x2axis, yaxis, y2axis, y3axis, ...
// Up to 9 y axes are supported.
axes: {
// options for each axis are specified in seperate option objects.
xaxis: {
label: "X Axis",
// Turn off "padding". This will allow data point to lie on the
// edges of the grid. Default padding is 1.2 and will keep all
// points inside the bounds of the grid.
pad: 0
},
yaxis: {
label: "Y Axis"
}
}
});
});
</script>
<script class="code" type="text/javascript">
$(document).ready(function(){
// Some simple loops to build up data arrays.
var cosPoints = [];
for (var i=0; i<2*Math.PI; i+=1){
cosPoints.push([i, Math.cos(i)]);
}
var sinPoints = [];
for (var i=0; i<2*Math.PI; i+=0.4){
sinPoints.push([i, 2*Math.sin(i-.8)]);
}
var powPoints1 = [];
for (var i=0; i<2*Math.PI; i+=1) {
powPoints1.push([i, 2.5 + Math.pow(i/4, 2)]);
}
var powPoints2 = [];
for (var i=0; i<2*Math.PI; i+=1) {
powPoints2.push([i, -2.5 - Math.pow(i/4, 2)]);
}
var plot3 = $.jqplot('chart3', [cosPoints, sinPoints, powPoints1, powPoints2],
{
title:'Line Style Options',
// Set default options on all series, turn on smoothing.
seriesDefaults: {
rendererOptions: {
smooth: true
}
},
// Series options are specified as an array of objects, one object
// for each series.
series:[
{
// Change our line width and use a diamond shaped marker.
lineWidth:2,
markerOptions: { style:'dimaond' }
},
{
// Don't show a line, just show markers.
// Make the markers 7 pixels with an 'x' style
showLine:false,
markerOptions: { size: 7, style:"x" }
},
{
// Use (open) circlular markers.
markerOptions: { style:"circle" }
},
{
// Use a thicker, 5 pixel line and 10 pixel
// filled square markers.
lineWidth:5,
markerOptions: { style:"filledSquare", size:10 }
}
]
}
);
});
</script>
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<script class="include" type="text/javascript" src="../plugins/jqplot.canvasTextRenderer.min.js"></script>
<script class="include" type="text/javascript" src="../plugins/jqplot.canvasAxisLabelRenderer.min.js"></script>
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