html, body, #container {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

anychart.onDocumentReady(function () {

    var dataTable = anychart.data.table();

​

    // The data used in this sample can be obtained from the CDN

    // https://cdn.anychart.com/csv-data/dji-daily-short.js

    dataTable.addData(get_dji_daily_short_data());

​

    var mapping = dataTable.mapAs({open: 1, high: 2, low: 3, close: 4, volume: 4});

​

    var chart = anychart.stock();

​

    // Create computer.

    var computer = dataTable.createComputer(mapping);

​

    var context = anychart.math.williamsR.initContext(20);

​

    // Set init context.

    computer.setContext(context);

​

    // Set start calculation function.

    computer.setStartFunction(anychart.math.williamsR.startFunction);

​

    // Calculation function.

    computer.setCalculationFunction(anychart.math.williamsR.calculationFunction);

​

    var indicatorMapping = dataTable.mapAs({value: computer.addOutputField('result')});

​

    var plot = chart.plot();

    plot.line(indicatorMapping).name('Williams %R(20)');

​

    chart.container('container');

    chart.draw();

});