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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Flot Examples: Selection and zooming</title>
<link href="../examples.css" rel="stylesheet" type="text/css">
<!--[if lte IE 8]><script language="javascript" type="text/javascript" src="../../excanvas.min.js"></script><![endif]-->
<script language="javascript" type="text/javascript" src="../../jquery.js"></script>
<script language="javascript" type="text/javascript" src="../../jquery.flot.js"></script>
<script language="javascript" type="text/javascript" src="../../jquery.flot.selection.js"></script>
<script type="text/javascript">
$(function() {
// setup plot
function getData(x1, x2) {
var d = [];
for (var i = 0; i <= 100; ++i) {
var x = x1 + i * (x2 - x1) / 100;
d.push([x, Math.sin(x * Math.sin(x))]);
}
return [
{ label: "sin(x sin(x))", data: d }
];
}
var options = {
legend: {
show: false
},
series: {
lines: {
show: true
},
points: {
show: true
}
},
yaxis: {
ticks: 10
},
selection: {
mode: "xy"
}
};
var startData = getData(0, 3 * Math.PI);
var plot = $.plot("#placeholder", startData, options);
// Create the overview plot
var overview = $.plot("#overview", startData, {
legend: {
show: false
},
series: {
lines: {
show: true,
lineWidth: 1
},
shadowSize: 0
},
xaxis: {
ticks: 4
},
yaxis: {
ticks: 3,
min: -2,
max: 2
},
grid: {
color: "#999"
},
selection: {
mode: "xy"
}
});
// now connect the two
$("#placeholder").bind("plotselected", function (event, ranges) {
// clamp the zooming to prevent eternal zoom
if (ranges.xaxis.to - ranges.xaxis.from < 0.00001) {
ranges.xaxis.to = ranges.xaxis.from + 0.00001;
}
if (ranges.yaxis.to - ranges.yaxis.from < 0.00001) {
ranges.yaxis.to = ranges.yaxis.from + 0.00001;
}
// do the zooming
plot = $.plot("#placeholder", getData(ranges.xaxis.from, ranges.xaxis.to),
$.extend(true, {}, options, {
xaxis: { min: ranges.xaxis.from, max: ranges.xaxis.to },
yaxis: { min: ranges.yaxis.from, max: ranges.yaxis.to }
})
);
// don't fire event on the overview to prevent eternal loop
overview.setSelection(ranges, true);
});
$("#overview").bind("plotselected", function (event, ranges) {
plot.setSelection(ranges);
});
// Add the Flot version string to the footer
$("#footer").prepend("Flot " + $.plot.version + " – ");
});
</script>
</head>
<body>
<div id="header">
<h2>Selection and zooming</h2>
</div>
<div id="content">
<div class="demo-container">
<div id="placeholder" class="demo-placeholder" style="float:left; width:650px;"></div>
<div id="overview" class="demo-placeholder" style="float:right;width:160px; height:125px;"></div>
</div>
<p>Selection support makes it easy to construct flexible zooming schemes. With a few lines of code, the small overview plot to the right has been connected to the large plot. Try selecting a rectangle on either of them.</p>
</div>
<div id="footer">
Copyright © 2007 - 2014 IOLA and Ole Laursen
</div>
</body>
</html>