Chart.js Doughnut plugin to allow for lines of text in the middle
Chart.js plugin module that allows to display multiple lines of text centered in the middle area of the doughnut charts
Demo
Have a look at the Demo page.
Table of contents
Installation
Install through npm:
npm install --save chartjs-plugin-doughnutlabel
Usage
var myDoughnutChart = new Chart(ctx, {
type: 'doughnut',
data: data,
options: {
plugins: {
doughnutlabel: {
labels: [
{
text: 'The title',
font: {
size: '60'
}
},
{
text: getTotal,
font: {
size: '50'
},
color: 'grey'
},
{
text: '$100.000',
font: {
size: '30'
},
color: 'red'
},
{
text: '95%',
font: {
size: '45'
},
color: 'green'
}
]
}
}
}
});
var getTotal = function(myDoughnutChart) {
var sum = myDoughnutChart.config.data.datasets[0].data.reduce((a, b) => a + b, 0);
return `Total: ${sum}`;
}
Usage without a module bundler
The plugin can be manually downloaded from the Releases page on GitHub!
<script src="chartjs-plugin-doughnutlabel.js"></script>
or use the minified version
<script src="chartjs-plugin-doughnutlabel.min.js"></script>
Development
You first need to install node dependencies (requires Node.js):
> npm install
The following commands will then be available from the repository root:
> gulp lint // perform code linting
> gulp build // build dist files
> gulp build --watch // build and watch for changes
> gulp package // create an archive with dist files and samples
In Angular
For an example on how to use this plugin with angular, please check this stackblitz prototype: doughnutlabel plugin in angular
License
chartjs-plugin-doughnutlabel is available under the MIT license.