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<title>Draw Lines on Plots - Canvas Overlay</title>
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<!-- Example scripts go here -->
<div id="chart1" style="margin-top:20px; margin-left:20px; width:400px; height:300px;"></div>
<button onclick="lineup()">Up</button>
<button onclick="linedown()">Down</button>
<pre class="code prettyprint brush: js"></pre>
<div id="chart2" style="margin-top:20px; margin-left:20px; width:400px; height:300px;"></div>
<pre class="code prettyprint brush: js"></pre>
<script class="code" type="text/javascript">
$(document).ready(function(){
var s1 = [[2009, 3.5], [2010, 4.4], [2011, 6.0], [2012, 9.1], [2013, 12.0], [2014, 14.4]];
var grid = {
gridLineWidth: 1.5,
gridLineColor: 'rgb(235,235,235)',
drawGridlines: true
};
plot1 = $.jqplot('chart1', [s1], {
series:[{
renderer:$.jqplot.BarRenderer,
rendererOptions: {
barWidth: 30
}
}],
axes: {
xaxis: {
renderer: $.jqplot.CategoryAxisRenderer
}
},
grid: grid,
canvasOverlay: {
show: true,
objects: [
{horizontalLine: {
name: 'barney',
y: 4,
lineWidth: 6,
color: 'rgb(100, 55, 124)',
shadow: false
}},
{horizontalLine: {
name: 'fred',
y: 6,
lineWidth: 12,
xminOffset: '8px',
xmaxOffset: '29px',
color: 'rgb(50, 55, 30)',
shadow: false
}},
{dashedHorizontalLine: {
name: 'wilma',
y: 8,
lineWidth: 2,
xOffset: '54',
color: 'rgb(133, 120, 24)',
shadow: false
}},
{horizontalLine: {
name: 'pebbles',
y: 10,
lineWidth: 3,
xOffset: 0,
color: 'rgb(89, 198, 154)',
shadow: false
}},
{dashedHorizontalLine: {
name: 'bam-bam',
y: 14,
lineWidth: 5,
dashPattern: [16, 12],
lineCap: 'round',
xOffset: '20',
color: 'rgb(66, 98, 144)',
shadow: false
}}
]
}
});
});
function lineup() {
var co = plot1.plugins.canvasOverlay;
var line = co.get('fred');
line.options.y += 1;
co.draw(plot1);
}
function linedown() {
var co = plot1.plugins.canvasOverlay;
var line = co.get('fred');
line.options.y -= 1;
co.draw(plot1);
}
</script>
<script class="code" type="text/javascript">
$(document).ready(function(){
var s2 = [[9, 3.5], [15, 4.4], [22, 6.0], [38, 9.1], [51, 12.0], [62, 14.4]];
var grid = {
gridLineWidth: 1.5,
gridLineColor: 'rgb(235,235,235)',
drawGridlines: true
};
plot2 = $.jqplot('chart2', [s2], {
grid: grid,
canvasOverlay: {
show: true,
objects: [
{verticalLine: {
name: 'barney',
x: 10,
lineWidth: 6,
color: 'rgb(100, 55, 124)',
shadow: false
}},
{verticalLine: {
name: 'fred',
x: 15,
lineWidth: 12,
yminOffset: '8px',
ymaxOffset: '29px',
color: 'rgb(50, 55, 30)',
shadow: false
}},
{dashedVerticalLine: {
name: 'wilma',
x: 20,
lineWidth: 2,
yOffset: '14',
color: 'rgb(133, 120, 24)',
shadow: false
}},
{verticalLine: {
name: 'pebbles',
x: 35,
lineWidth: 3,
yOffset: 0,
lineCap: 'butt',
color: 'rgb(89, 198, 154)',
shadow: false
}},
{dashedVerticalLine: {
name: 'bam-bam',
x: 45,
lineWidth: 5,
dashPattern: [16, 12],
lineCap: 'round',
yOffset: '20px',
color: 'rgb(66, 98, 144)',
shadow: false
}}
]
}
});
});
</script>
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