2021-04-02 14:04:39 +02:00
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# Log Scale
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```js chart-editor
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// <block:actions:2>
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const logNumbers = (num) => {
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const data = [];
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for (let i = 0; i < num; ++i) {
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data.push(Math.ceil(Math.random() * 10.0) * Math.pow(10, Math.ceil(Math.random() * 5)));
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}
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return data;
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};
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const actions = [
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{
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name: 'Randomize',
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handler(chart) {
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chart.data.datasets.forEach(dataset => {
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dataset.data = logNumbers(chart.data.labels.length);
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});
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chart.update();
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}
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},
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];
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// </block:actions>
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// <block:setup:1>
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const DATA_COUNT = 7;
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const NUMBER_CFG = {count: DATA_COUNT, min: 0, max: 100};
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const labels = Utils.months({count: 7});
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const data = {
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labels: labels,
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datasets: [
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{
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label: 'Dataset 1',
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data: logNumbers(DATA_COUNT),
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borderColor: Utils.CHART_COLORS.red,
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backgroundColor: Utils.CHART_COLORS.red,
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fill: false,
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},
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]
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};
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// </block:setup>
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// <block:config:0>
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const config = {
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type: 'line',
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data: data,
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options: {
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responsive: true,
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plugins: {
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title: {
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display: true,
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text: 'Chart.js Line Chart - Logarithmic'
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}
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},
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scales: {
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x: {
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display: true,
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},
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y: {
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display: true,
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type: 'logarithmic',
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}
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}
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},
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};
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// </block:config>
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module.exports = {
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actions: actions,
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config: config,
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};
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```
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2022-05-21 17:02:13 +02:00
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## Docs
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* [Line](../../charts/line.html)
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* [Logarithmic Axis](../../axes/cartesian/logarithmic.html)
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* [Data structures (`labels`)](../../general/data-structures.html)
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