Area chart with color above zero - CanvasJS JavaScript Charts

Area chart with color above zero - 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 dataPoints = [        
        { x: 10, y: 71},
        { x: 20, y: 55},
        { x: 30, y: 70 },
        { x: 40, y: 55 },
        { x: 50, y: 85 },
        { x: 60, y: 68 },
        { x: 70, y: -28 },
        { x: 80, y: 34 },
        { x: 90, y: 24 }
        ];   

var chart = new CanvasJS.Chart("chartContainer",
    {
      title:{
       text: "Area chart with color above a threshold"   
      },
      
      axisY:{
      	gridThickness:0,
        stripLines:[{
        	value: 0,
          color: "#BBBBBB",
          thickness: 2,
        	showOnTop: true,
        }]
      },
      
      data: [
      {        
        type: "area", 
        dataPoints: dataPoints
      },
      {        
        type: "area",
        toolTipContent: null,
        highlightEnabled: false,
        color: "white",
        fillOpacity: 1,
        markerSize: 0,
        dataPoints: [
          { x: 10, y: 0},
          { x: 90, y: 0}
        ]
      },{        
        type: "line",
        dataPoints: dataPoints
      }
      ]
    });
		
    chart.render();
    
    var minimum = chart.axisY[0].get("minimum");
    chart.data[1].dataPoints[0].y = minimum;
    chart.data[1].dataPoints[1].y = minimum;
    chart.render();