Highstock demo - 1.7 million points with async loading

1.7 million points with async loading
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$(function () {
    /**
     * Load new data depending on the selected min and max
     */
    function afterSetExtremes(e) {

        var chart = $('#container').highcharts();

        chart.showLoading('Loading data from server...');
        $.getJSON('http://www.highcharts.com/samples/data/from-sql.php?start=' + Math.round(e.min) +
                '&end=' + Math.round(e.max) + '&callback=?', function (data) {

                chart.series[0].setData(data);
                chart.hideLoading();
            });
    }

    // See source code from the JSONP handler at https://github.com/highslide-software/highcharts.com/blob/master/samples/data/from-sql.php
    $.getJSON('http://www.highcharts.com/samples/data/from-sql.php?callback=?', function (data) {

        // Add a null value for the end date
        data = [].concat(data, [[Date.UTC(2011, 9, 14, 19, 59), null, null, null, null]]);

        // create the chart
        $('#container').highcharts('StockChart', {
            chart : {
                type: 'candlestick',
                zoomType: 'x'
            },

            navigator : {
                adaptToUpdatedData: false,
                series : {
                    data : data
                }
            },

            scrollbar: {
                liveRedraw: false
            },

            title: {
                text: 'AAPL history by the minute from 1998 to 2011'
            },

            subtitle: {
                text: 'Displaying 1.7 million data points in Highcharts Stock by async server loading'
            },

            rangeSelector : {
                buttons: [{
                    type: 'hour',
                    count: 1,
                    text: '1h'
                }, {
                    type: 'day',
                    count: 1,
                    text: '1d'
                }, {
                    type: 'month',
                    count: 1,
                    text: '1m'
                }, {
                    type: 'year',
                    count: 1,
                    text: '1y'
                }, {
                    type: 'all',
                    text: 'All'
                }],
                inputEnabled: false, // it supports only days
                selected : 4 // all
            },

            xAxis : {
                events : {
                    afterSetExtremes : afterSetExtremes
                },
                minRange: 3600 * 1000 // one hour
            },

            yAxis: {
                floor: 0
            },

            series : [{
                data : data,
                dataGrouping: {
                    enabled: false
                }
            }]
        });
    });
});
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