anychart.onDocumentReady(function () {
var dataTable = anychart.data.table();
dataTable.addData(get_dji_daily_short_data());
var data1 = dataTable.mapAs({value: 1});
var data2 = dataTable.mapAs({value: 3});
var data3 = dataTable.mapAs({value: 2});
var chart = anychart.stock();
var scroller = chart.scroller();
scroller.defaultSeriesType('line');
scroller.addSeries(data1, data2, data3);
var count = scroller.getSeriesCount();
chart.title('Series count is ' + count);
chart.container('container');