smartmeter-app/echarts-for-weixin-master/pages/sankey/index.js

import * as echarts from '../../ec-canvas/echarts';

const app = getApp();

function initChart(canvas, width, height, dpr) {
  const chart = echarts.init(canvas, null, {
    width: width,
    height: height,
    devicePixelRatio: dpr // new
  });
  canvas.setChart(chart);

  var option = {
    series: {
      type: 'sankey',
      layout: 'none',
      data: [{
        name: 'a'
      }, {
        name: 'b'
      }, {
        name: 'a1'
      }, {
        name: 'a2'
      }, {
        name: 'b1'
      }, {
        name: 'c'
      }, {
        name: 'd'
      }, {
        name: 'd1'
      }, {
        name: 'd2'
      }, {
        name: 'd3'
      }],
      links: [{
        source: 'a',
        target: 'a1',
        value: 5
      }, {
        source: 'a',
        target: 'a2',
        value: 3
      }, {
        source: 'b',
        target: 'b1',
        value: 8
      }, {
        source: 'a',
        target: 'b1',
        value: 3
      }, {
        source: 'b1',
        target: 'a1',
        value: 1
      }, {
        source: 'd',
        target: 'a2',
        value: 1
      }, {
        source: 'd',
        target: 'c',
        value: 1
      }, {
        source: 'd1',
        target: 'c',
        value: 2
      }, {
        source: 'd2',
        target: 'c',
        value: 2
      }, {
        source: 'd',
        target: 'd3',
        value: 4
      }, {
        source: 'd2',
        target: 'd3',
        value: 1
      }]
    }
  };

  chart.setOption(option);
  return chart;
}

Page({
  onShareAppMessage: function (res) {
    return {
      title: 'ECharts 可以在微信小程序中使用啦！',
      path: '/pages/index/index',
      success: function () { },
      fail: function () { }
    }
  },
  data: {
    ec: {
      onInit: initChart
    }
  },

  onReady() {
  }
});