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<title>Flot Examples: Visitors</title>
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<script type="text/javascript">

$(function() {

        var d = [[1196463600000, 0], [1196550000000, 0], [1196636400000, 0], [1196722800000, 77], [1196809200000, 3636], [1196895600000, 3575], [1196982000000, 2736], [1197068400000, 1086], [1197154800000, 676], [1197241200000, 1205], [1197327600000, 906], [1197414000000, 710], [1197500400000, 639], [1197586800000, 540], [1197673200000, 435], [1197759600000, 301], [1197846000000, 575], [1197932400000, 481], [1198018800000, 591], [1198105200000, 608], [1198191600000, 459], [1198278000000, 234], [1198364400000, 1352], [1198450800000, 686], [1198537200000, 279], [1198623600000, 449], [1198710000000, 468], [1198796400000, 392], [1198882800000, 282], [1198969200000, 208], [1199055600000, 229], [1199142000000, 177], [1199228400000, 374], [1199314800000, 436], [1199401200000, 404], [1199487600000, 253], [1199574000000, 218], [1199660400000, 476], [1199746800000, 462], [1199833200000, 448], [1199919600000, 442], [1200006000000, 403], [1200092400000, 204], [1200178800000, 194], [1200265200000, 327], [1200351600000, 374], [1200438000000, 507], [1200524400000, 546], [1200610800000, 482], [1200697200000, 283], [1200783600000, 221], [1200870000000, 483], [1200956400000, 523], [1201042800000, 528], [1201129200000, 483], [1201215600000, 452], [1201302000000, 270], [1201388400000, 222], [1201474800000, 439], [1201561200000, 559], [1201647600000, 521], [1201734000000, 477], [1201820400000, 442], [1201906800000, 252], [1201993200000, 236], [1202079600000, 525], [1202166000000, 477], [1202252400000, 386], [1202338800000, 409], [1202425200000, 408], [1202511600000, 237], [1202598000000, 193], [1202684400000, 357], [1202770800000, 414], [1202857200000, 393], [1202943600000, 353], [1203030000000, 364], [1203116400000, 215], [1203202800000, 214], [1203289200000, 356], [1203375600000, 399], [1203462000000, 334], [1203548400000, 348], [1203634800000, 243], [1203721200000, 126], [1203807600000, 157], [1203894000000, 288]];

        // first correct the timestamps - they are recorded as the daily
        // midnights in UTC+0100, but Flot always displays dates in UTC
        // so we have to add one hour to hit the midnights in the plot

        for (var i = 0; i < d.length; ++i) {
                d[i][0] += 60 * 60 * 1000;
        }

        // helper for returning the weekends in a period

        function weekendAreas(axes) {

                var markings = [],
                        d = new Date(axes.xaxis.min);

                // go to the first Saturday

                d.setUTCDate(d.getUTCDate() - ((d.getUTCDay() + 1) % 7))
                d.setUTCSeconds(0);
                d.setUTCMinutes(0);
                d.setUTCHours(0);

                var i = d.getTime();

                // when we don't set yaxis, the rectangle automatically
                // extends to infinity upwards and downwards

                do {
                        markings.push({ xaxis: { from: i, to: i + 2 * 24 * 60 * 60 * 1000 } });
                        i += 7 * 24 * 60 * 60 * 1000;
                } while (i < axes.xaxis.max);

                return markings;
        }

        var options = {
                xaxis: {
                        mode: "time",
                        tickLength: 5
                },
                selection: {
                        mode: "x"
                },
                grid: {
                        markings: weekendAreas
                }
        };

        var plot = $.plot("#placeholder", [d], options);

        var overview = $.plot("#overview", [d], {
                series: {
                        lines: {
                                show: true,
                                lineWidth: 1
                        },
                        shadowSize: 0
                },
                xaxis: {
                        ticks: [],
                        mode: "time"
                },
                yaxis: {
                        ticks: [],
                        min: 0,
                        autoscaleMargin: 0.1
                },
                selection: {
                        mode: "x"
                }
        });

        // now connect the two

        $("#placeholder").bind("plotselected", function (event, ranges) {

                // do the zooming
                $.each(plot.getXAxes(), function(_, axis) {
                        var opts = axis.options;
                        opts.min = ranges.xaxis.from;
                        opts.max = ranges.xaxis.to;
                });
                plot.setupGrid();
                plot.draw();
                plot.clearSelection();

                // 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 + " &ndash; ");
});

</script>

</head> <body>

<div id="header">
        <h2>Visitors</h2>
</div>

<div id="content">

        <div class="demo-container">
                <div id="placeholder" class="demo-placeholder"></div>
        </div>

        <div class="demo-container" style="height:150px;">
                <div id="overview" class="demo-placeholder"></div>
        </div>

        <p>This plot shows visitors per day to the Flot homepage, with weekends colored.</p>

        <p>The smaller plot is linked to the main plot, so it acts as an overview. Try dragging a selection on either plot, and watch the behavior of the other.</p>

</div>

<div id="footer">
        Copyright &copy; 2007 - 2014 IOLA and Ole Laursen
</div>

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