将react chartjs的标签文本更改为图像

const imagePlugin = {
  id: 'imagePlugin',
  afterDraw: function(chart) {
    const ctx = chart.ctx;
    const xAxis = chart.scales['x-axis-0'];
    const yAxis = chart.scales['y-axis-0'];

    chart.data.datasets.forEach((dataset, datasetIndex) => {
      const meta = chart.getDatasetMeta(datasetIndex);
      const data = dataset.data;

      meta.data.forEach((element, index) => {
        const model = element._model;
        const text = dataset.labels[index]; // 获取标签文本

        // 将标签文本替换为图像
        const img = new Image();
        img.src = `path/to/${text}.png`; // 图像路径根据实际情况修改
        ctx.drawImage(img, model.x, model.y, model.width, model.height);
      });
    });
  }
};

Chart.plugins.register(imagePlugin);

npm install react-chartjs-2 chart.js

import React from 'react';
import { Line } from 'react-chartjs-2';

const data = {
  labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
  datasets: [
    {
      label: 'Data',
      data: [12, 19, 3, 5, 2, 3, 9],
      fill: false,
      borderColor: 'rgb(75, 192, 192)',
      tension: 0.1
    }
  ]
};

const options = {
  plugins: {
    imagePlugin: {} // 启用自定义插件
  }
};

const ChartComponent = () => {
  return <Line data={data} options={options} />;
};

export default ChartComponent;