anychart.onDocumentReady(function () {
var dataTable = anychart.data.table();
dataTable.addData(get_dji_daily_short_data());
var mapping = dataTable.mapAs({value: 4, volume: 5});
var chart = anychart.stock();
var computer = dataTable.createComputer(mapping);
var context = anychart.math.volumeMA.initContext(10, 'ema');
computer.setContext(context);
computer.setStartFunction(anychart.math.volumeMA.startFunction);
computer.setCalculationFunction(anychart.math.volumeMA.calculationFunction);
computer.addOutputField('volumeResult');
computer.addOutputField('maResult');
plot.stick(dataTable, {value: computer.getFieldIndex('volumeResult')}).name('Volume');
plot.line(dataTable, {value: computer.getFieldIndex('maResult')}).name('SMA(20)');
chart.container('container');