html,

body,

#container {

  width: 100%;

  height: 100%;

  margin: 0;

  padding: 0;

}

anychart.onDocumentReady(function () {

  // generate data

  var rawData = [];

  for (var x = -180; x < 180; x++) {

    rawData.push([

      x,

      -12.6 * (1 - Math.cos((x * 1.14) / 180)),

      -12.6 * (1 - Math.cos((x * 2.14) / 180)),

      -12.6 * (1 - Math.cos((x * 3.14) / 180))

    ]);

  }

​

  // create a data set

  var series = anychart.data.mapAsTable(rawData, 'area');

​

  // create polar chart

  var chart = anychart.polar();

​

  // set chart title

  chart.title('Microphones Sensitivity Polar Pattern');

​

  // add series

  chart.defaultSeriesType('area');

  chart.addSeries(series[0], series[1], series[2]);

​

  // set series names

  chart.getSeries(0).name('SMM58');

  chart.getSeries(1).name('NTT1A');

  chart.getSeries(2).name('sE4400a IV');

​

  // set chart yScale settings

  chart.yScale().ticks().interval(5);

  chart.yScale().minimum(-25).maximum(0);

  chart.startAngle(180);

​

  // set chart xScale settings

  chart.xScale().minimum(-180).maximum(180);

  chart.xScale().ticks().interval(30);

​

  // set xAxis formatting settings

  chart

    .xAxis()

    .labels()

    .format(function () {

      return Math.abs(this.value) + '\xb0';

    });

​

  // enabled y-grid and create palette for grid rows

  chart.yGrid().palette(['lightgray 0.3', 'white 0.9']);

​

  // set legend settings

  chart.legend().enabled(true).position('center-bottom');

​

  // set container id for the chart

  chart.container('container');

  // initiate chart drawing

  chart.draw();

});