111 lines
3.3 KiB
HTML
111 lines
3.3 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.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: Adding Annotations</title>
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<link href="../examples.css" rel="stylesheet" type="text/css" />
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<!--[if lte IE 8
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]><script
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language="javascript"
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type="text/javascript"
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src="../../excanvas.min.js"
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></script
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><![endif]-->
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<script
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language="javascript"
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type="text/javascript"
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src="../../jquery.js"
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></script>
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<script
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language="javascript"
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type="text/javascript"
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src="../../jquery.flot.js"
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></script>
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<script type="text/javascript">
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$(function () {
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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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}
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var data = [{ data: d1, label: "Pressure", color: "#333" }];
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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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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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var o = plot.pointOffset({ x: 2, y: -1.2 });
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// Append it to the placeholder that Flot already uses for positioning
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placeholder.append(
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"<div style='position:absolute;left:" +
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(o.left + 4) +
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"px;top:" +
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o.top +
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"px;color:#666;font-size:smaller'>Warming up</div>"
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);
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o = plot.pointOffset({ x: 8, y: -1.2 });
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placeholder.append(
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"<div style='position:absolute;left:" +
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(o.left + 4) +
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"px;top:" +
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o.top +
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"px;color:#666;font-size:smaller'>Actual measurements</div>"
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);
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// Draw a little arrow on top of the last label to demonstrate canvas
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// 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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// Add the Flot version string to the footer
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$("#footer").prepend("Flot " + $.plot.version + " – ");
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});
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</script>
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</head>
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<body>
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<div id="header">
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<h2>Adding Annotations</h2>
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</div>
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<div id="content">
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<div class="demo-container">
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<div id="placeholder" class="demo-placeholder"></div>
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</div>
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<p>
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Flot has support for simple background decorations such as lines and
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rectangles. They can be useful for marking up certain areas. You can
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easily add any HTML you need with standard DOM manipulation, e.g. for
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labels. For drawing custom shapes there is also direct access to the
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canvas.
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</p>
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</div>
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<div id="footer">Copyright © 2007 - 2014 IOLA and Ole Laursen</div>
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</body>
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</html>
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