Time Scale - Max Span
config setup actions
const config = {
type: 'line',
data: data,
options: {
spanGaps: 1000 * 60 * 60 * 24 * 2, // 2 days
responsive: true,
interaction: {
mode: 'nearest',
},
plugins: {
title: {
display: true,
text: 'Chart.js Time - spanGaps: 172800000 (2 days in ms)'
},
},
scales: {
x: {
type: 'time',
display: true,
title: {
display: true,
text: 'Date'
},
ticks: {
autoSkip: false,
maxRotation: 0,
major: {
enabled: true
},
// color: function(context) {
// return context.tick && context.tick.major ? '#FF0000' : 'rgba(0,0,0,0.1)';
// },
font: function(context) {
if (context.tick && context.tick.major) {
return {
style: 'bold',
};
}
}
}
},
y: {
display: true,
title: {
display: true,
text: 'value'
}
}
}
},
};
const data = {
datasets: [{
label: 'Dataset with string point data',
backgroundColor: Utils.transparentize(Utils.CHART_COLORS.red, 0.5),
borderColor: Utils.CHART_COLORS.red,
fill: false,
data: [{
x: Utils.newDateString(0),
y: Utils.rand(0, 100)
}, {
x: Utils.newDateString(2),
y: Utils.rand(0, 100)
}, {
x: Utils.newDateString(4),
y: Utils.rand(0, 100)
}, {
x: Utils.newDateString(6),
y: Utils.rand(0, 100)
}],
}, {
label: 'Dataset with date object point data',
backgroundColor: Utils.transparentize(Utils.CHART_COLORS.blue, 0.5),
borderColor: Utils.CHART_COLORS.blue,
fill: false,
data: [{
x: Utils.newDate(0),
y: Utils.rand(0, 100)
}, {
x: Utils.newDate(2),
y: Utils.rand(0, 100)
}, {
x: Utils.newDate(5),
y: Utils.rand(0, 100)
}, {
x: Utils.newDate(6),
y: Utils.rand(0, 100)
}]
}]
};
const actions = [
{
name: 'Randomize',
handler(chart) {
chart.data.datasets.forEach(dataset => {
dataset.data.forEach(function(dataObj, j) {
const newVal = Utils.rand(0, 100);
if (typeof dataObj === 'object') {
dataObj.y = newVal;
} else {
dataset.data[j] = newVal;
}
});
});
chart.update();
}
},
];