Achieve responsiveness for Google Chart Gauge

I am trying to create a Google Gauge chart that is web-responsive, but setting the width to '100%' is not working as expected. Here is the code I am using:

<script type='text/javascript'>
      google.load('visualization', '1', {packages:['gauge']});
      google.setOnLoadCallback(drawChart);
      function drawChart() {
        var data = google.visualization.arrayToDataTable([
          ['Label', 'Value'],
          ['Happiness', 40],
        ]);

        var options = {
          width: '100%', height: '100%',
          redFrom: 0, redTo: 40,
          yellowFrom: 40, yellowTo: 70,
          greenFrom: 70, greenTo: 100,
          minorTicks: 5
        };

        var chart = new google.visualization.Gauge(document.getElementById('test'));
        chart.draw(data, options);
      }
    </script>

You can view an example here.

If you know how to make this chart web-responsive, please let me know. Thank you!

javascriptresponsive-designgoogle-visualization

Answer №1

In order to make the charts resize automatically, you will need to set up an event handler that triggers the chart.draw(data, options); function upon resize:

function drawChart () {
    var data = google.visualization.arrayToDataTable([
        ['Label', 'Value'],
        ['Happiness', 40]
    ]);

    var options = {
        redFrom: 0,
        redTo: 40,
        yellowFrom:40,
        yellowTo: 70,
        greenFrom: 70,
        greenTo: 100,
        minorTicks: 5
    };

    var chart = new google.visualization.Gauge(document.getElementById('test'));
    chart.draw(data, options);

    function resizeHandler () {
        chart.draw(data, options);
    }
    if (window.addEventListener) {
        window.addEventListener('resize', resizeHandler, false);
    }
    else if (window.attachEvent) {
        window.attachEvent('onresize', resizeHandler);
    }
}

If you try to set height and width to 100% within the options, it will not have any effect. Instead, you should define these properties in the CSS for your container div:

#test {
    height: 100%;
    width: 100%;
}

Remember that setting the height to 100% will only work if the parent element has a specific height; also, the dimensions of a Gauge chart are based on the smaller of the two dimensions. Therefore, if you increase the screen size without specifying the height of the container #test (or its parent container), the chart size may not change accordingly.

Answer №2

To make a responsive div tag, you can simply set the width to 100% in the options. Alternatively, you can also use the following code snippet from this demo to see it in action.

//Insert HTML code here

 <div class="row"> 
   <div class="col-xs-12 col-sm-6">
    <div id="chart_div"></div>
  </div>
 </div>

//Insert JS code here

 var options = {'title':'How Much Pizza I Ate Last Night',
                   'width':'100%',
                  };

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