Как настроить doughnut в chart.js?

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var ctx = do***ent.getElementById('myChart').getContext('2d');

var myDoughnutChart = new Chart(ctx, {
    type: 'doughnut',
    data: {
        labels: ['Red', 'Blue', 'Yellow'],
        datasets: [{
            label: '# of Votes',
            data: [12, 19, 3],
            backgroundColor: [
                'rgba(255, 99, 132, 0.2)',
                'rgba(54, 162, 235, 0.2)',
                'rgba(255, 206, 86, 0.2)'
            ],
            borderColor: [
                'rgba(255, 99, 132, 1)',
                'rgba(54, 162, 235, 1)',
                'rgba(255, 206, 86, 1)'
            ],
            borderWidth: 1
        }]
    },
    options: {
        cutoutPercentage: 50,
        rotation: -0.5 * Math.PI,
        animation: {
            animateScale: true
        },
        legend: {
            display: true,
            position: 'right'
        },
        responsive: true
    }
});