javascript - Add text inside the Doughnut chart of the React-Chartjs-2 box to react

Javascript - Add text inside the Doughnut chart of the React-Chartjs-2 box to react

To add text inside the Doughnut chart of the react-chartjs-2 library in React, you can achieve this by creating a custom chart component and rendering the text manually using Chart.js plugins. Here's how you can do it:

First, install the required dependencies:

npm install react-chartjs-2 chart.js

Then, create a custom Doughnut chart component:

import React from 'react'; import { Doughnut } from 'react-chartjs-2'; import ChartDataLabels from 'chartjs-plugin-datalabels'; const data = { labels: ['Red', 'Green', 'Blue'], datasets: [ { data: [300, 50, 100], backgroundColor: ['#FF6384', '#36A2EB', '#FFCE56'], hoverBackgroundColor: ['#FF6384', '#36A2EB', '#FFCE56'], }, ], }; const options = { plugins: { datalabels: { color: 'white', font: { weight: 'bold', size: 16, }, formatter: (value, context) => { return context.chart.data.labels[context.dataIndex] + '\n' + value; }, }, }, }; const DoughnutChart = () => { return <Doughnut data={data} options={options} />; }; export default DoughnutChart;

In this example:

  • We use the react-chartjs-2 library to create a Doughnut chart.
  • We include the chartjs-plugin-datalabels plugin to display data labels.
  • Inside the options object, we configure the datalabels plugin to customize the appearance and position of the labels.
  • In the formatter function, we customize the label format to include both the label and the value.

Now, you can use the DoughnutChart component in your React application to display a Doughnut chart with text inside each segment. Adjust the data and options according to your requirements.

Examples

  1. "React Chartjs 2 Doughnut Chart add text inside segment"

    • Description: This query seeks methods to add text inside individual segments of a Doughnut chart rendered using React-Chartjs-2.
    • Code Implementation:
      <Doughnut data={{ labels: ['Red', 'Blue', 'Yellow'], datasets: [{ data: [300, 50, 100], backgroundColor: ['red', 'blue', 'yellow'] }] }} options={{ plugins: { datalabels: { formatter: (value, ctx) => { let label = ctx.chart.data.labels[ctx.dataIndex]; return label + ': ' + value; } } } }} />

  2. "React Chartjs 2 Doughnut Chart add text on hover"

    • Description: This query pertains to displaying text within the segments of a Doughnut chart in React-Chartjs-2 when hovered over.
    • Code Implementation:
      <Doughnut data={{ labels: ['Red', 'Blue', 'Yellow'], datasets: [{ data: [300, 50, 100], backgroundColor: ['red', 'blue', 'yellow'] }] }} options={{ tooltips: { callbacks: { label: (tooltipItem, data) => { let label = data.labels[tooltipItem.index]; let value = data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index]; return label + ': ' + value; } } } }} />

  3. "React Chartjs 2 Doughnut Chart add text inside segment animation"

    • Description: This query focuses on animating the text display inside segments of a Doughnut chart using React-Chartjs-2.
    • Code Implementation:
      <Doughnut data={{ labels: ['Red', 'Blue', 'Yellow'], datasets: [{ data: [300, 50, 100], backgroundColor: ['red', 'blue', 'yellow'] }] }} options={{ animation: { animateRotate: true, animateScale: true }, plugins: { datalabels: { formatter: (value, ctx) => { let label = ctx.chart.data.labels[ctx.dataIndex]; return label + ': ' + value; } } } }} />

  4. "React Chartjs 2 Doughnut Chart custom text inside segment"

    • Description: This query seeks ways to customize the text displayed inside segments of a Doughnut chart in React-Chartjs-2.
    • Code Implementation:
      <Doughnut data={{ labels: ['Red', 'Blue', 'Yellow'], datasets: [{ data: [300, 50, 100], backgroundColor: ['red', 'blue', 'yellow'] }] }} options={{ plugins: { datalabels: { formatter: (value, ctx) => { return 'Custom Text'; } } } }} />

  5. "React Chartjs 2 Doughnut Chart add percentage inside segment"

    • Description: This query aims to include percentage values inside segments of a Doughnut chart rendered using React-Chartjs-2.
    • Code Implementation:
      <Doughnut data={{ labels: ['Red', 'Blue', 'Yellow'], datasets: [{ data: [300, 50, 100], backgroundColor: ['red', 'blue', 'yellow'] }] }} options={{ plugins: { datalabels: { formatter: (value, ctx) => { let sum = ctx.dataset.data.reduce((acc, val) => acc + val, 0); let percentage = (value * 100 / sum).toFixed(2) + "%"; return percentage; } } } }} />

  6. "React Chartjs 2 Doughnut Chart add legend inside segment"

    • Description: This query explores methods to incorporate legend items inside individual segments of a Doughnut chart in React-Chartjs-2.
    • Code Implementation:
      <Doughnut data={{ labels: ['Red', 'Blue', 'Yellow'], datasets: [{ data: [300, 50, 100], backgroundColor: ['red', 'blue', 'yellow'] }] }} options={{ plugins: { datalabels: { formatter: (value, ctx) => { return ctx.dataset.label; } } } }} />

  7. "React Chartjs 2 Doughnut Chart add dynamic text inside segment"

    • Description: This query seeks ways to dynamically update the text displayed inside segments of a Doughnut chart in React-Chartjs-2.
    • Code Implementation:
      // Assume dynamicText is a state variable updated dynamically <Doughnut data={{ labels: ['Red', 'Blue', 'Yellow'], datasets: [{ data: [300, 50, 100], backgroundColor: ['red', 'blue', 'yellow'] }] }} options={{ plugins: { datalabels: { formatter: (value, ctx) => { return dynamicText; } } } }} />

  8. "React Chartjs 2 Doughnut Chart change font size of text inside segment"

    • Description: This query focuses on altering the font size of the text displayed inside segments of a Doughnut chart in React-Chartjs-2.
    • Code Implementation:
      <Doughnut data={{ labels: ['Red', 'Blue', 'Yellow'], datasets: [{ data: [300, 50, 100], backgroundColor: ['red', 'blue', 'yellow'] }] }} options={{ plugins: { datalabels: { font: { size: 16 } } } }} />

  9. "React Chartjs 2 Doughnut Chart add multiple texts inside segment"

    • Description: This query looks into adding multiple text elements inside segments of a Doughnut chart in React-Chartjs-2.
    • Code Implementation:
      <Doughnut data={{ labels: ['Red', 'Blue', 'Yellow'], datasets: [{ data: [300, 50, 100], backgroundColor: ['red', 'blue', 'yellow'] }] }} options={{ plugins: { datalabels: { formatter: (value, ctx) => { let label1 = 'Text1'; let label2 = 'Text2'; return `${label1}\n${label2}`; } } } }} />

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