反転
const config = {
type: 'line',
data: data,
options: {
scales: {
x: {
type: 'realtime',
realtime: {
duration: 20000,
refresh: 1000,
delay: 2000,
onRefresh: onRefresh
},
reverse: true
},
y: {
title: {
display: true,
text: '値'
}
}
},
interaction: {
intersect: false
}
}
};
const data = {
datasets: [
{
label: 'データセット1 (線形補間)',
backgroundColor: Utils.transparentize(Utils.CHART_COLORS.red, 0.5),
borderColor: Utils.CHART_COLORS.red,
borderDash: [8, 4],
data: []
},
{
label: 'データセット2 (キュービック補間)',
backgroundColor: Utils.transparentize(Utils.CHART_COLORS.blue, 0.5),
borderColor: Utils.CHART_COLORS.blue,
cubicInterpolationMode: 'monotone',
data: []
}
]
};
const onRefresh = chart => {
const now = Date.now();
chart.data.datasets.forEach(dataset => {
dataset.data.push({
x: now,
y: Utils.rand(-100, 100)
});
});
};
const actions = [
{
name: 'ランダム化',
handler(chart) {
chart.data.datasets.forEach(dataset => {
dataset.data.forEach(dataObj => {
dataObj.y = Utils.rand(-100, 100);
});
});
chart.update();
}
},
{
name: 'データセット追加',
handler(chart) {
const datasets = chart.data.datasets;
const dsColor = Utils.namedColor(datasets.length);
const newDataset = {
label: 'データセット' + (datasets.length + 1),
backgroundColor: Utils.transparentize(dsColor, 0.5),
borderColor: dsColor,
data: []
};
datasets.push(newDataset);
chart.update();
}
},
{
name: 'データ追加',
handler(chart) {
onRefresh(chart);
chart.update();
}
},
{
name: 'データセット削除',
handler(chart) {
chart.data.datasets.pop();
chart.update();
}
},
{
name: 'データ削除',
handler(chart) {
chart.data.datasets.forEach(dataset => {
dataset.data.shift();
});
chart.update();
}
}
];
