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2017/03/27

How to create line chart with 2 y-axis using chart.js

This is a quick post about how to create line chart with 2 y-axis using chart.js.


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<!DOCTYPE html>
<html>
<head>
    <!-- For latest CDN version of Chart.js, visit https://cdnjs.com/libraries/Chart.js -->
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.5.0/Chart.bundle.js"></script>
</head>
<body>
    
    <canvas id="myChart" width="400" height="250"></canvas>

    <script>
        var ctx = document.getElementById("myChart").getContext("2d");
        var myChart = new Chart(ctx, {
          type: "line",
          data: {
            "labels": [
              "01.12.2015",
              "02.12.2015",
              "03.12.2015",
              "04.12.2015",
              "30.12.2015"
            ],
            "datasets": [{
              "label": "DEA Burrweiler Druck Abgabe",
              "fill": "false",
              yAxisID: "y-axis-0",
              "data": [
                8.7913,
                8.6985,
                8.7914,
                8.7948,
                8.7882
              ]
            }, {
              "label": "DEA Burrweiler Druck Zulauf",
              "fill": "false",
              yAxisID: "y-axis-0",
              "data": [
                4.5997,
                4.5526,
                4.5915,
                4.5937,
                4.5795
              ]
            }, {
              "label": "DMS Flemlingen Durchfluss",
              "fill": "false",
              yAxisID: "y-axis-1",
              "data": [
                1.9588,
                2.4226,
                2.1392,
                2.223,
                1.9048
              ]
            }]
          },
          options: {
            scales: {
              yAxes: [{
                position: "left",
                "id": "y-axis-0"
              }, {
                position: "right",
                "id": "y-axis-1"
              }]
            }
          }
        });
    </script>

</body>
</html>

Result


To disable the responsive feature, add "responsive: false" as shown below.


References:

Chart.js - line chart with two yAxis
http://stackoverflow.com/questions/37028536/chart-js-line-chart-with-two-yaxis

http://jsfiddle.net/dahd27d7/
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