module.exports = { config: { type: 'polarArea', data: { labels: [0, 1, 2, 3, 4, 5], datasets: [ { // option in dataset data: [0, 2, 4, null, 6, 8], borderAlign: function(ctx) { var value = ctx.dataset.data[ctx.dataIndex] || 0; return value > 4 ? 'inner' : 'center'; }, borderColor: '#0000ff', }, ] }, options: { elements: { arc: { backgroundColor: 'transparent', borderColor: '#ff00ff', borderWidth: 8, } }, scales: { r: { display: false } } } }, options: { canvas: { height: 256, width: 512 } } };