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<title>Flot Examples: Error Bars</title>
<link href="../examples.css" rel="stylesheet" type="text/css">
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<script language="javascript" type="text/javascript" src="../../jquery.flot.errorbars.js"></script>
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<script type="text/javascript">
$(function() {
function drawArrow(ctx, x, y, radius){
ctx.beginPath();
ctx.moveTo(x + radius, y + radius);
ctx.lineTo(x, y);
ctx.lineTo(x - radius, y + radius);
ctx.stroke();
}
function drawSemiCircle(ctx, x, y, radius){
ctx.beginPath();
ctx.arc(x, y, radius, 0, Math.PI, false);
ctx.moveTo(x - radius, y);
ctx.lineTo(x + radius, y);
ctx.stroke();
}
var data1 = [
[1,1,.5,.1,.3],
[2,2,.3,.5,.2],
[3,3,.9,.5,.2],
[1.5,-.05,.5,.1,.3],
[3.15,1.,.5,.1,.3],
[2.5,-1.,.5,.1,.3]
];
var data1_points = {
show: true,
radius: 5,
fillColor: "blue",
errorbars: "xy",
xerr: {show: true, asymmetric: true, upperCap: "-", lowerCap: "-"},
yerr: {show: true, color: "red", upperCap: "-"}
};
var data2 = [
[.7,3,.2,.4],
[1.5,2.2,.3,.4],
[2.3,1,.5,.2]
];
var data2_points = {
show: true,
radius: 5,
errorbars: "y",
yerr: {show:true, asymmetric:true, upperCap: drawArrow, lowerCap: drawSemiCircle}
};
var data3 = [
[1,2,.4],
[2,0.5,.3],
[2.7,2,.5]
];
var data3_points = {
//do not show points
radius: 0,
errorbars: "y",
yerr: {show:true, upperCap: "-", lowerCap: "-", radius: 5}
};
var data4 = [
[1.3, 1],
[1.75, 2.5],
[2.5, 0.5]
];
var data4_errors = [0.1, 0.4, 0.2];
for (var i = 0; i < data4.length; i++) {
data4_errors[i] = data4[i].concat(data4_errors[i])
}
var data = [
{color: "blue", points: data1_points, data: data1, label: "data1"},
{color: "red", points: data2_points, data: data2, label: "data2"},
{color: "green", lines: {show: true}, points: data3_points, data: data3, label: "data3"},
// bars with errors
{color: "orange", bars: {show: true, align: "center", barWidth: 0.25}, data: data4, label: "data4"},
{color: "orange", points: data3_points, data: data4_errors}
];
$.plot($("#placeholder"), data , {
legend: {
position: "sw",
show: true
},
series: {
lines: {
show: false
}
},
xaxis: {
min: 0.6,
max: 3.1
},
yaxis: {
min: 0,
max: 3.5
},
zoom: {
interactive: true
},
pan: {
interactive: true
}
});
// Add the Flot version string to the footer
$("#footer").prepend("Flot " + $.plot.version + " – ");
});
</script>
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<body>
<div id="header">
<h2>Error Bars</h2>
</div>
<div id="content">
<div class="demo-container">
<div id="placeholder" class="demo-placeholder"></div>
</div>
<p>With the errorbars plugin you can plot error bars to show standard deviation and other useful statistical properties.</p>
</div>
<div id="footer">
Copyright © 2007 - 2014 IOLA and Ole Laursen
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