Move data labels outside of pie or donut chart - Chart.js

Question

I'm developing a large application and it would be very helpful to place labels on a pie or donut chart outside of the chart itself.

This plugin, outerLabels is exactly what I'm looking for, but I can't get it to output anything.

I haven't been able to find a way to accomplish this using Chart.js, so this is what I'm stuck with now.

I have imported the plugin Import{} from 'chartjs-plugin-outerlabels'; Also like import 'chartjs-plugin-outerlabels';

Here is an example of how I set the chart options:

function getPieChartOptions(chartTitle: string) {
    const options: ChartOptions = {
        responsive: true,
        plugins: {
            outerLabels: {
                fontNormalSize: 12,
                fontNormalFamily: 'sans-serif',
            },
            legend: {
                display: true,
                labels: {
                    usePointStyle: true,
                    font: {
                        family: 'sans-serif',
                        size: 12,
                    }
                }
            },
            title: {
                display: true,
                text: chartTitle,
                color: 'black',
                padding: 5,
                font: {
                    size: 16,
                    family: 'sans-serif',
                }
            },
            datalabels: {
                color: 'white',
                formatter: commas.format,
            }
        },
    };
    return options;
}

The following is an example of a donut chart within the project itself:

If anyone can help get this plugin working, or has another solution to this problem, it would be greatly appreciated!

Answer 1

This worked for me without the datalabels field (as it requires the Chartjs-plugin-datalabels.js library to be installed).

So basically the ChartOptions settings are similar to the ones you provided.

import 'chartjs-plugin-outerlabels';

getPieChartOptions(chartTitle: string) {
  const options: ChartOptions = {
    responsive: true,
    plugins: {
      outerLabels: {
        fontNormalSize: 12,
        fontNormalFamily: 'sans-serif',
      },
      legend: {
        display: true,
        labels: {
          usePointStyle: true,
          font: {
            family: 'sans-serif',
            size: 12,
          },
        },
      },
      title: {
        display: true,
        text: chartTitle,
        color: 'black',
        padding: 5,
        font: {
          size: 16,
          family: 'sans-serif',
        },
      },
      tooltip: {
        enabled: false,
      },
    },
  };
  return options;
}

This is how to render a chart to a canvas element.

@ViewChild('MyChart', { static: true }) chart: ElementRef;

ngAfterViewInit() {
  const ctx = this.chart.nativeElement.getContext('2d');
  new Chart(ctx, {
    type: 'doughnut',
    data: {
      labels: [['Download', 'Sales'], ['In', 'Store', 'Sales'], 'Mail Sales'],
      datasets: [
        {
          data: [300, 500, 100],
        },
      ],
    },
    options: this.getPieChartOptions('doughnut'),
  } as ChartConfiguration).draw;
}

Demo @ StackBlitz