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   <title>Flot Examples</title>
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   <h1>Flot Examples</h1>

   <div id="placeholder" style="width:600px;height:300px"></div>

   <p>One of the goals of Flot is to support user interactions. Try
   pointing and clicking on the points.</p>

   <p id="hoverdata">Mouse hovers at
   (<span id="x">0</span>, <span id="y">0</span>). <span id="clickdata"></span></p>

   <p>A tooltip is easy to build with a bit of jQuery code and the
   data returned from the plot.</p>

   <p><input id="enableTooltip" type="checkbox">Enable tooltip</p>

<script id=“source” language=“javascript” type=“text/javascript”> $(function () {

var sin = [], cos = [];
for (var i = 0; i < 14; i += 0.5) {
    sin.push([i, Math.sin(i)]);
    cos.push([i, Math.cos(i)]);
}

var plot = $.plot($("#placeholder"),
       [ { data: sin, label: "sin(x)"}, { data: cos, label: "cos(x)" } ], {
           series: {
               lines: { show: true },
               points: { show: true }
           },
           grid: { hoverable: true, clickable: true },
           yaxis: { min: -1.2, max: 1.2 }
         });

function showTooltip(x, y, contents) {
    $('<div id="tooltip">' + contents + '</div>').css( {
        position: 'absolute',
        display: 'none',
        top: y + 5,
        left: x + 5,
        border: '1px solid #fdd',
        padding: '2px',
        'background-color': '#fee',
        opacity: 0.80
    }).appendTo("body").fadeIn(200);
}

var previousPoint = null;
$("#placeholder").bind("plothover", function (event, pos, item) {
    $("#x").text(pos.x.toFixed(2));
    $("#y").text(pos.y.toFixed(2));

    if ($("#enableTooltip:checked").length > 0) {
        if (item) {
            if (previousPoint != item.datapoint) {
                previousPoint = item.datapoint;

                $("#tooltip").remove();
                var x = item.datapoint[0].toFixed(2),
                    y = item.datapoint[1].toFixed(2);

                showTooltip(item.pageX, item.pageY,
                            item.series.label + " of " + x + " = " + y);
            }
        }
        else {
            $("#tooltip").remove();
            previousPoint = null;            
        }
    }
});

$("#placeholder").bind("plotclick", function (event, pos, item) {
    if (item) {
        $("#clickdata").text("You clicked point " + item.dataIndex + " in " + item.series.label + ".");
        plot.highlight(item.series, item.datapoint);
    }
});

}); </script>

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