Line Chart drawTime
const data = {
labels: generateLabels(),
datasets: [
{
label: 'Dataset 1',
data: generateData(),
borderColor: Utils.CHART_COLORS.red,
backgroundColor: Utils.CHART_COLORS.red,
fill: true
},
{
label: 'Dataset 2',
data: generateData(),
borderColor: Utils.CHART_COLORS.blue,
backgroundColor: Utils.transparentize(Utils.CHART_COLORS.blue),
fill: true
}
]
};
const config = {
type: 'line',
data: data,
options: {
plugins: {
filler: {
propagate: false,
},
title: {
display: true,
text: (ctx) => 'drawTime: ' + ctx.chart.options.plugins.filler.drawTime
}
},
pointBackgroundColor: '#fff',
radius: 10,
interaction: {
intersect: false,
}
},
};
const inputs = {
min: -100,
max: 100,
count: 8,
decimals: 2,
continuity: 1
};
const generateLabels = () => {
return Utils.months({count: inputs.count});
};
Utils.srand(3);
const generateData = () => (Utils.numbers(inputs));
let smooth = false;
const actions = [
{
name: 'drawTime: beforeDatasetDraw (default)',
handler: (chart) => {
chart.options.plugins.filler.drawTime = 'beforeDatasetDraw';
chart.update();
}
},
{
name: 'drawTime: beforeDatasetsDraw',
handler: (chart) => {
chart.options.plugins.filler.drawTime = 'beforeDatasetsDraw';
chart.update();
}
},
{
name: 'drawTime: beforeDraw',
handler: (chart) => {
chart.options.plugins.filler.drawTime = 'beforeDraw';
chart.update();
}
},
{
name: 'Randomize',
handler(chart) {
chart.data.datasets.forEach(dataset => {
dataset.data = generateData();
});
chart.update();
}
},
{
name: 'Smooth',
handler(chart) {
smooth = !smooth;
chart.options.elements.line.tension = smooth ? 0.4 : 0;
chart.update();
}
}
];
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