root / hci / trunk / eneraptor-web-app / web-app / js / flot / examples / annotating.html @ 11
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> |
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<title>Flot Examples</title> |
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<link href="layout.css" rel="stylesheet" type="text/css"></link> |
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<!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
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<script language="javascript" type="text/javascript" src="../jquery.js"></script> |
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<script language="javascript" type="text/javascript" src="../jquery.flot.js"></script> |
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</head>
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<body>
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<h1>Flot Examples</h1> |
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<div id="placeholder" style="width:600px;height:300px;"></div> |
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<p>Flot has support for simple background decorations such as
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lines and rectangles. They can be useful for marking up certain |
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areas. You can easily add any HTML you need with standard DOM |
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manipulation, e.g. for labels. For drawing custom shapes there is |
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also direct access to the canvas.</p>
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<script id="source" language="javascript" type="text/javascript"> |
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$(function () {
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// generate a dataset
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var d1 = [];
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for (var i = 0; i < 20; ++i)
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d1.push([i, Math.sin(i)]);
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var data = [{ data: d1, label: "Pressure", color: "#333" }];
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// setup background areas
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var markings = [
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{ color: '#f6f6f6', yaxis: { from: 1 } },
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{ color: '#f6f6f6', yaxis: { to: -1 } },
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{ color: '#000', lineWidth: 1, xaxis: { from: 2, to: 2 } },
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{ color: '#000', lineWidth: 1, xaxis: { from: 8, to: 8 } }
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];
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var placeholder = $("#placeholder");
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// plot it
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var plot = $.plot(placeholder, data, {
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bars: { show: true, barWidth: 0.5, fill: 0.9 },
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xaxis: { ticks: [], autoscaleMargin: 0.02 },
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yaxis: { min: -2, max: 2 },
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grid: { markings: markings }
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});
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// add labels
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var o;
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o = plot.pointOffset({ x: 2, y: -1.2});
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// we just append it to the placeholder which Flot already uses
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// for positioning
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placeholder.append('<div style="position:absolute;left:' + (o.left + 4) + 'px;top:' + o.top + 'px;color:#666;font-size:smaller">Warming up</div>');
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o = plot.pointOffset({ x: 8, y: -1.2});
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placeholder.append('<div style="position:absolute;left:' + (o.left + 4) + 'px;top:' + o.top + 'px;color:#666;font-size:smaller">Actual measurements</div>');
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// draw a little arrow on top of the last label to demonstrate
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// canvas drawing
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var ctx = plot.getCanvas().getContext("2d");
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ctx.beginPath();
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o.left += 4;
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ctx.moveTo(o.left, o.top);
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ctx.lineTo(o.left, o.top - 10);
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ctx.lineTo(o.left + 10, o.top - 5);
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ctx.lineTo(o.left, o.top);
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ctx.fillStyle = "#000";
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ctx.fill();
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});
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</script>
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</body>
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</html>
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