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<!DOCTYPE html><html><head><title>Draw Lines on Plots - Canvas Overlay</title><link class="include" rel="stylesheet" type="text/css" href="../jquery.jqplot.min.css" /><link rel="stylesheet" type="text/css" href="examples.min.css" /><link type="text/css" rel="stylesheet" href="syntaxhighlighter/styles/shCoreDefault.min.css" /><link type="text/css" rel="stylesheet" href="syntaxhighlighter/styles/shThemejqPlot.min.css" /><!--[if lt IE 9]><script language="javascript" type="text/javascript" src="../excanvas.js"></script><![endif]--><script class="include" type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script></head><body><div id="header"><div class="nav"><a class="nav" href="../../../index.php"><span>></span>Home</a><a class="nav" href="../../../docs/"><span>></span>Docs</a><a class="nav" href="../../download/"><span>></span>Download</a><a class="nav" href="../../../info.php"><span>></span>Info</a><a class="nav" href="../../../donate.php"><span>></span>Donate</a></div></div><div class="colmask leftmenu"><div class="colleft"><div class="col1" id="example-content"><!-- 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><!-- End example scripts --><!-- Don't touch this! --><script class="include" type="text/javascript" src="../jquery.jqplot.min.js"></script><script type="text/javascript" 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JSON Data Loading via Data Renderers</a></div><div class="example-link"><a class="example-link" href="barLineAnimated.html">Animated Charts</a></div><div class="example-link"><a class="example-link" href="dashboardWidget.html">Animated Dashboard Sample - Filled Line with Log Axis</a></div><div class="example-link"><a class="example-link" href="kcp_area.html">Area Chart</a></div><div class="example-link"><a class="example-link" href="kcp_area2.html">Area Chart 2</a></div><div class="example-link"><a class="example-link" href="axisLabelTests.html">Axis Labels</a></div><div class="example-link"><a class="example-link" href="axisLabelsRotatedText.html">Axis Labels and Rotated Text</a></div><div class="example-link"><a class="example-link" href="barTest.html">Bar Charts</a></div><div class="example-link"><a class="example-link" href="multipleBarColors.html">Bar Colors Example</a></div><div class="example-link"><a class="example-link" href="bezierCurve.html">Bezier Curve Plots</a></div><div class="example-link"><a class="example-link" href="blockPlot.html">Block Plots</a></div><div class="example-link"><a class="example-link" href="bubbleChart.html">Bubble Charts</a></div><div class="example-link"><a class="example-link" href="bubble-plots.html">Bubble Plots</a></div><div class="example-link"><a class="example-link" href="candlestick.html">Candlestick and Open Hi Low Close Charts</a></div><div class="example-link"><a class="example-link" href="theming.html">Chart Theming</a></div><div class="example-link"><a class="example-link" href="fillBetweenLines.html">Charts with Fill Between Lines</a></div><div class="example-link"><a class="example-link" href="kcp_cdf.html">Cumulative Density Function Chart</a></div><div class="example-link"><a class="example-link" href="dashedLines.html">Dashed Lines with Smoothing</a></div><div class="example-link"><a class="example-link" href="cursor-highlighter.html">Data Point Highlighting, Tooltips and Cursor Tracking</a></div><div class="example-link"><a class="example-link" href="point-labels.html">Data Point labels</a></div><div class="example-link"><a class="example-link" href="date-axes.html">Date Axes</a></div><div class="example-link"><a class="example-link" href="dateAxisRenderer.html">Date Axes 2</a></div><div class="example-link"><a class="example-link" href="rotatedTickLabelsZoom.html">Date Axes, Rotated Labels and Zooming</a></div><div class="example-link"><a class="example-link" href="canvas-overlay.html">Draw Lines on Plots - Canvas Overlay</a></div><div class="example-link"><a class="example-link" href="draw-rectangles.html">Draw Rectangles on Plots</a></div><div class="example-link"><a class="example-link" href="kcp_engel.html">Engel Curves</a></div><div class="example-link"><a class="example-link" href="bandedLine.html">Error Bands and Confidence Intervals</a></div><div class="example-link"><a class="example-link" href="area.html">Filled (Area) Charts</a></div><div class="example-link"><a class="example-link" href="axisScalingForceTickAt.html">Force Plot to Have Tick at 0 or 100</a></div><div class="example-link"><a class="example-link" href="hiddenPlotsInTabs.html">Hidden Plots</a></div><div class="example-link"><a class="example-link" href="customHighlighterCursorTrendline.html">Highlighting, Dragging Points, Cursor and Trend Lines</a></div><div class="example-link"><a class="example-link" href="line-charts.html">Line Charts and Options</a></div><div class="example-link"><a class="example-link" href="kcp_lorenz.html">Lorenz Curves</a></div><div class="example-link"><a class="example-link" href="mekkoCharts.html">Mekko Charts</a></div><div class="example-link"><a class="example-link" href="meterGauge.html">Meter Gauge</a></div><div class="example-link"><a class="example-link" href="candlestick-charts.html">Open Hi Low Close and Candlestick Charts</a></div><div class="example-link"><a class="example-link" href="pieTest.html">Pie Charts and Options</a></div><div 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class="example-link"><a class="example-link" href="resizablePlot.html">Resizable Plots</a></div><div class="example-link"><a class="example-link" href="rotated-tick-labels.html">Rotated Labels and Font Styling</a></div><div class="example-link"><a class="example-link" href="smoothedLine.html">Smoothed Lines</a></div><div class="example-link"><a class="example-link" href="bar-charts.html">Vertical and Horizontal Bar Charts</a></div><div class="example-link"><a class="example-link" href="waterfall.html">Waterfall Charts</a></div><div class="example-link"><a class="example-link" href="waterfall2.html">Waterfall Charts 2</a></div><div class="example-link"><a class="example-link" href="zoomOptions.html">Zoom Options</a></div><div class="example-link"><a class="example-link" href="zoomProxy.html">Zoom Proxy - Control one plot from another</a></div><div class="example-link"><a class="example-link" href="zoom1.html">Zooming</a></div><div class="example-link"><a class="example-link" href="dateAxisLogAxisZooming.html">Zooming with Date and Log Axes</a></div></div></div></div><script type="text/javascript" src="example.min.js"></script></body></html>