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module.exports = {
config: {
type: 'line',
data: {
labels: [0, 1, 2, 3, 4, 5],
datasets: [
{
// option in dataset
data: [0, 5, 10, null, -10, -5],
pointBackgroundColor: '#0000ff',
pointRadius: function(ctx) {
var value = ctx.dataset.data[ctx.dataIndex] || 0;
return value > 4 ? 10
: value > -4 ? 5
: 2;
}
},
{
// option in element (fallback)
data: [4, -5, -10, null, 10, 5],
}
]
},
options: {
legend: false,
title: false,
elements: {
line: {
fill: false,
},
point: {
backgroundColor: '#ff0000',
radius: function(ctx) {
var value = ctx.dataset.data[ctx.dataIndex] || 0;
return value > 4 ? 2
: value > -4 ? 5
: 10;
},
}
},
scales: {
xAxes: [{display: false}],
yAxes: [
{
display: false,
ticks: {
beginAtZero: true
}
}
]
}
}
},
options: {
canvas: {
height: 256,
width: 512
}
}
};