Set height of chart in Chart.js

Vincent T picture Vincent T · Jan 31, 2017 · Viewed 202.8k times · Source

I want to draw a horizontal bar chart with Chart.js but it keeps scaling the chart instead of using the height I assign the canvas form the script.

Is there any way to set the height of the graph from the script?

See fiddle: Jsfidle

HTML

<div class="graph">
  <div class="chart-legend">

  </div>
  <div class="chart">
    <canvas id="myChart"></canvas>
  </div>
</div>

JavaScript

var ctx = $('#myChart');

ctx.height(500);

var myChart = new Chart(ctx, {
    type: 'horizontalBar',
    data: {
        labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
        datasets: [{
            label: '# of Votes',
            data: [12, 19, 3, 5, 2, 3],
            backgroundColor: [
                'rgba(255, 99, 132, 0.2)',
                'rgba(54, 162, 235, 0.2)',
                'rgba(255, 206, 86, 0.2)',
                'rgba(75, 192, 192, 0.2)',
                'rgba(153, 102, 255, 0.2)',
                'rgba(255, 159, 64, 0.2)'
            ],
            borderColor: [
                'rgba(255,99,132,1)',
                'rgba(54, 162, 235, 1)',
                'rgba(255, 206, 86, 1)',
                'rgba(75, 192, 192, 1)',
                'rgba(153, 102, 255, 1)',
                'rgba(255, 159, 64, 1)'
            ],
            borderWidth: 1
        }]
    },
    maintainAspectRatio: false,
    options: {
        scales: {
            yAxes: [{
                ticks: {
                    beginAtZero:true
                }
            }]
        }
    }
});

Answer

numediaweb picture numediaweb · Apr 27, 2017

If you disable the maintain aspect ratio in options then it uses the available height:

var chart = new Chart('blabla', {
                type: 'bar',
                data: {
                },
                options: {
                    maintainAspectRatio: false,
                }
            });