Make Google Chart Gauge responsive

Question

I would like to create a Google Gauge charts which should be web-responsive. I heard about setting the width to \'100%\' should work out, but it actually doesn\'t make any c

Answer 1

You can just just assign the width 100% in options and a responsive div tag with width="100%" or here goes fiddle link where you can see the live demo.

//html here

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

//js here

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

Answer 2

The charts will not resize automatically. You must set up an event handler that calls chart.draw(data, options); on 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);
    }
}

Setting height and width to 100% in the options won't do anything for you. You will need to set those in CSS for your container div:

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

Keep in mind a few things: setting height to 100% doesn't do anything unless the parent element has a specific height; also, the height and width of a Gauge are determined by the smaller of the dimensions. So if you increase the size of the screen without specifying the height of the container #test (or it's parent container), the likely outcome is that the chart won't change size.