Inverted Chart axisY stackedColumn - CanvasJS JavaScript Charts

Inverted Chart axisY stackedColumn - CanvasJS JavaScript Charts

by canvasjs

HTML

<script src="https://canvasjs.com/assets/script/canvasjs.min.js"></script>
<br/><!-- Just so that JSFiddle's Result label doesn't overlap the Chart -->
<div id="chartContainer" style="height: 360px; width: 100%;"></div>

JavaScript

var chart = new CanvasJS.Chart("chartContainer",
	{
  	title:{
  		text:"Inverted AxisY"
  	},        
    data: [
      {
        type: "stackedColumn",
        dataPoints: [
        { x: 10, y: 200 },
        { x: 20, y: 155},
        { x: 30, y: 150 },
        { x: 40, y: 165 },
        { x: 50, y: 195 },
        { x: 60, y: 168 },
        { x: 70, y: 128 },
        { x: 80, y: 134 },
        { x: 90, y: 114}
        ]
      },
      {
        type: "stackedColumn",
        dataPoints: [
        { x: 10, y: 180 },
        { x: 20, y: 135},
        { x: 30, y: 50 },
        { x: 40, y: 135 },
        { x: 50, y: 195 },
        { x: 60, y: 50 },
        { x: 70, y: 128 },
        { x: 80, y: 134 },
        { x: 90, y: 114}
        ]
      }
      ]
    });
 
 invert(chart);
 chart.render();
 
 function invert(chart){  
  //Invert DataPoint Y Values.
 
	for(var i = 0; i < chart.options.data.length; i++){
  	for(var j=0; j<chart.options.data[i].dataPoints.length;j++)
      chart.options.data[i].dataPoints[j].y= -(chart.options.data[i].dataPoints[j].y) ;    
  }
  
  //Invert Y Axis Labels
  if(!chart.options.axisY)
    chart.options.axisY = {};
  
	chart.options.axisY.labelFormatter = function (e) {
    return e.value+150;
  };
 
	//Invert ToolTip Values
	if(!chart.options.toolTip)
  	 chart.options.toolTip = {};
  
	chart.options.toolTip.contentFormatter = function(e){
    var content = " ", entry;    
    for (var i = 0; i < e.entries.length; i++) {
      entry = e.entries[i];
      content = -(entry.dataPoint.y);
    }
    return content;
  }  
}