136 lines
3.1 KiB
HTML
136 lines
3.1 KiB
HTML
|
<!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: Tracking</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.crosshair.js"></script>
|
||
|
|
<script type="text/javascript">
|
||
|
|
|
||
|
|
$(function() {
|
||
|
|
|
||
|
|
var sin = [], cos = [];
|
||
|
|
for (var i = 0; i < 14; i += 0.1) {
|
||
|
|
sin.push([i, Math.sin(i)]);
|
||
|
|
cos.push([i, Math.cos(i)]);
|
||
|
|
}
|
||
|
|
|
||
|
|
plot = $.plot("#placeholder", [
|
||
|
|
{ data: sin, label: "sin(x) = -0.00"},
|
||
|
|
{ data: cos, label: "cos(x) = -0.00" }
|
||
|
|
], {
|
||
|
|
series: {
|
||
|
|
lines: {
|
||
|
|
show: true
|
||
|
|
}
|
||
|
|
},
|
||
|
|
crosshair: {
|
||
|
|
mode: "x"
|
||
|
|
},
|
||
|
|
grid: {
|
||
|
|
hoverable: true,
|
||
|
|
autoHighlight: false
|
||
|
|
},
|
||
|
|
yaxis: {
|
||
|
|
min: -1.2,
|
||
|
|
max: 1.2
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
var legends = $("#placeholder .legendLabel");
|
||
|
|
|
||
|
|
legends.each(function () {
|
||
|
|
// fix the widths so they don't jump around
|
||
|
|
$(this).css('width', $(this).width());
|
||
|
|
});
|
||
|
|
|
||
|
|
var updateLegendTimeout = null;
|
||
|
|
var latestPosition = null;
|
||
|
|
|
||
|
|
function updateLegend() {
|
||
|
|
|
||
|
|
updateLegendTimeout = null;
|
||
|
|
|
||
|
|
var pos = latestPosition;
|
||
|
|
|
||
|
|
var axes = plot.getAxes();
|
||
|
|
if (pos.x < axes.xaxis.min || pos.x > axes.xaxis.max ||
|
||
|
|
pos.y < axes.yaxis.min || pos.y > axes.yaxis.max) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
var i, j, dataset = plot.getData();
|
||
|
|
for (i = 0; i < dataset.length; ++i) {
|
||
|
|
|
||
|
|
var series = dataset[i];
|
||
|
|
|
||
|
|
// Find the nearest points, x-wise
|
||
|
|
|
||
|
|
for (j = 0; j < series.data.length; ++j) {
|
||
|
|
if (series.data[j][0] > pos.x) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Now Interpolate
|
||
|
|
|
||
|
|
var y,
|
||
|
|
p1 = series.data[j - 1],
|
||
|
|
p2 = series.data[j];
|
||
|
|
|
||
|
|
if (p1 == null) {
|
||
|
|
y = p2[1];
|
||
|
|
} else if (p2 == null) {
|
||
|
|
y = p1[1];
|
||
|
|
} else {
|
||
|
|
y = p1[1] + (p2[1] - p1[1]) * (pos.x - p1[0]) / (p2[0] - p1[0]);
|
||
|
|
}
|
||
|
|
|
||
|
|
legends.eq(i).text(series.label.replace(/=.*/, "= " + y.toFixed(2)));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$("#placeholder").bind("plothover", function (event, pos, item) {
|
||
|
|
latestPosition = pos;
|
||
|
|
if (!updateLegendTimeout) {
|
||
|
|
updateLegendTimeout = setTimeout(updateLegend, 50);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
// Add the Flot version string to the footer
|
||
|
|
|
||
|
|
$("#footer").prepend("Flot " + $.plot.version + " – ");
|
||
|
|
});
|
||
|
|
|
||
|
|
</script>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
|
||
|
|
<div id="header">
|
||
|
|
<h2>Tracking</h2>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div id="content">
|
||
|
|
|
||
|
|
<div class="demo-container">
|
||
|
|
<div id="placeholder" class="demo-placeholder"></div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<p>You can add crosshairs that'll track the mouse position, either on both axes or as here on only one.</p>
|
||
|
|
|
||
|
|
<p>If you combine it with listening on hover events, you can use it to track the intersection on the curves by interpolating the data points (look at the legend).</p>
|
||
|
|
|
||
|
|
<p id="hoverdata"></p>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div id="footer">
|
||
|
|
Copyright © 2007 - 2014 IOLA and Ole Laursen
|
||
|
|
</div>
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|