isCumulativeSum : Boolean

Setting isCumulativeSum to true automatically calculates the sum of the dataPoints since the start of the dataSeries, in Waterfall Chart.

• Works only in Waterfall Chart.

var  chart =  new  CanvasJS.Chart("container",
{
 .
 .
 data: [{
   type : "waterfall",
   dataPoints: [
     .
     .
     {  isCumulativeSum : true },
     .
     .
  ]
 
  }],
 .
 . 
});
chart.render();