This plugin draws an linear trendline in your Chart. It has been tested with Chart.js version 4.4.4.
Load Chart.js first, then the plugin which will automatically register itself with Chart.js
<script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.4/dist/chart.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-trendline/dist/chartjs-plugin-trendline.min.js"></script>
Install & import the plugin via npm:
npm i chart.js chartjs-plugin-trendline
import ChartJS from 'chart.js';
import chartTrendline from 'chartjs-plugin-trendline';
ChartJS.plugins.register(chartTrendline);
To configure the trendline plugin you simply add a new config options to your dataset in your chart config.
{
trendlineLinear: {
colorMin: Color
colorMax: Color,
lineStyle: string, // "dotted" | "solid" | "dashed" | "dashdot"
width: number,
xAxisKey: string, // optional
yAxisKey: string, // optional
projection: boolean, // optional
// optional
label: {
color: Color,
text: string,
display: boolean,
displayValue: boolean,
offset: number,
percentage: boolean,
font: {
family: string,
size: number,
}
},
// optional
legend: {
text: string,
strokeStyle: Color,
fillStyle: Color,
lineCap: string,
lineDash: number[],
lineWidth: number,
}
}
}
- bar
- line
- scatter
Pull requests and issues are always welcome. For bugs and feature requests, please create an issue.
chartjs-plugin-trendline.js is available under the MIT license.