module.exports = { config: { type: 'line', data: { labels: [0, 1, 2, 3], datasets: [ { // option in dataset data: [null, 3, 3], borderCapStyle: function(ctx) { var index = (ctx.datasetIndex % 2); return index === 0 ? 'round' : index === 1 ? 'square' : 'butt'; } }, { // option in element (fallback) data: [null, 2, 2], }, { // option in element (fallback) data: [null, 1, 1], } ] }, options: { legend: false, title: false, elements: { line: { borderCapStyle: function(ctx) { var index = (ctx.datasetIndex % 3); return index === 0 ? 'round' : index === 1 ? 'square' : 'butt'; }, borderColor: '#ff0000', borderWidth: 32, fill: false }, point: { radius: 10, } }, layout: { padding: 32 }, scales: { xAxes: [{display: false}], yAxes: [ { display: false, ticks: { beginAtZero: true } } ] } } }, options: { canvas: { height: 256, width: 512 } } };