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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: Error Bars</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.errorbars.js"></script>
    <script language="javascript" type="text/javascript" src="../../jquery.flot.navigate.js"></script>
    <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 + " &ndash; ");
    });

    </script>
</head>
<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 &copy; 2007 - 2013 IOLA and Ole Laursen
    </div>

</body>
</html>