anychart.onDocumentReady(function () {
var dataTable = anychart.data.table();
dataTable.addData(get_dji_daily_short_data());
var mapping = dataTable.mapAs({value: 1});
var chart = anychart.stock();
var customScale = anychart.scales.log();
var series = plot.line(mapping);
series.yScale(customScale);
chart.title('Set Y-scale');
chart.container('container');