echarts-散点图-关系图-vue3-内阴影

以上为效果图
但是有一个问题是，一开始需要定义位置和颜色数组，当数据量过多的时候会重叠而且要提前声明很多数据

后面我决定用关系图来做了，先放上散点图代码供参考

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function initReport(sdata) {
  const myChart0 = echarts.init(main0.value);
  const offsetData = [
    [10, 20],
    [40, 40],
    [60, 80],
    [90, 28],
    [30, 50],
    [20, 50],
    [30, 80],
    [40, 30],
    [50, 10],
  ];
  const colorData = [
    ["rgba(254,86,55,0.00)", "#FE5637"],
    ["rgba(254,192,203,0.00)", "#FEC0CB"],
    ["rgba(255,230,1800,0.00)", "#FFE612"],
    ["rgba(3,228,236,0.00)", "#03E4EC"],
    ["rgba(231,115,200,0.00)", "#E773C8"],
    ["rgba(0,217,138,0.00)", "#00D98A "],
    ["rgba(255,230,18,0.00)", "#B8860A"],
    ["rgba(184,134,10,0.00)", "#FFE612"],
    ["rgba(3,228,236,0.00)", "#03E4EC"],
  ];
  const symbolSizeData = [80, 100, 90, 120, 120,70,60,60,80];
  const optiondata = [];
  for (var i = 0; i < sdata.length; i++) {
    if (sdata.length > 9) {
      offsetData.push([
        Math.floor(Math.random() * (100 - 40)) + 40,
        Math.floor(Math.random() * (100 - 30)) + 30,
      ]);
      colorData.push(["rgba(255,230,1800,0.00)", "#FFE612"]);
      symbolSizeData.push(Math.floor(Math.random() * (120 - 80)) + 80)
    }
    const item = sdata[i];
    optiondata.push({
      name: item.name,
      number: item.count,
      value: offsetData[i],
      symbolSize: symbolSizeData[i],
      color: colorData[i],
      itemStyle: {
        normal: {
          color: new echarts.graphic.RadialGradient(0.5, 0.5, 1, [
            {
              offset: 0,
              color: colorData[i][0],
            },
            {
              offset: 1,
              color: colorData[i][1],
            },
          ]),
          opacity: 0.9,
          shadowColor: "transparent",
        },
      },
    });
  }
  const option0 = {
    grid: {
      top: 0,
      bottom: 0,
    },
    xAxis: [
      {
        type: "value",
        show: false,
        min: 0,
        max: 100,
      },
    ],
    yAxis: [
      {
        show: false,
        min: 0,
        max: 100,
      },
    ],
 
    series: [
      {
        type: "scatter",
        symbol: "circle",
        label: {
          normal: {
            show: true,
            formatter: function (params) {
              var res = params.data.name + "\n" + params.data.number;
              return res;
            },
            color: "#fff",
            textStyle: {
              fontSize: "14",
            },
          },
        },
        animationDurationUpdate: 500,
        animationEasingUpdate: 500,
        animationDelay: function (idx) {
          return idx * 100;
        },
        data: optiondata,
      },
    ],
  };
  myChart0.setOption(option0);
 
  window.addEventListener("resize", () => {
    myChart0.resize();
  });
}

是在vue3框架里面写的，里面的数据格式为：

[{name: '可乐', count: 49}]

代码优化：转为关系图设置

function initTest(data = [], format = []) {
  // 入参说明:
  // 1. data 原始气泡数据，是一个对象数组，形如[{name: '可乐', count: 49}]
  // 2. format 数组依次指定气泡中展示的名称以及影响气泡大小的数据值, 形如['name', 'count']
  let [maxValue, temp] = [0, []];
  data.forEach((item) => {
    temp.push(item[format[1]]);
  });
  maxValue = Math.max.apply(null, temp);

  // 气泡颜色数组
  let colorData = [
    ["rgba(254,86,55,0.00)", "#FE5637"],
    ["rgba(254,192,203,0.00)", "#FEC0CB"],
    ["rgba(255,230,1800,0.00)", "#FFE612"],
    ["rgba(3,228,236,0.00)", "#03E4EC"],
    ["rgba(231,115,200,0.00)", "#E773C8"],
    ["rgba(0,217,138,0.00)", "#00D98A "],
    ["rgba(255,230,18,0.00)", "#B8860A"],
    ["rgba(184,134,10,0.00)", "#FFE612"],
    ["rgba(3,228,236,0.00)", "#03E4EC"],
  ];
  // 气泡颜色备份
  let bakeColor = [...colorData];
  // 气泡数据
  let bubbleData = [];
  // 气泡基础大小
  let basicSize = 70;
  // 节点之间的斥力因子,值越大,气泡间距越大
  let repulsion = 380;
  // 根据气泡数量配置基础大小和斥力因子（以实际情况进行适当调整，使气泡合理分布）
  if (data.length >= 5 && data.length < 10) {
    basicSize = 50;
    repulsion = 230;
  }
  if (data.length >= 10 && data.length < 20) {
    basicSize = 40;
    repulsion = 150;
  } else if (data.length >= 20) {
    basicSize = 30;
    repulsion = 75;
  }
  // console.log(bakeColor)
  // 填充气泡数据数组bubbleData
  for (let item of data) {
    // 确保气泡数据条数少于或等于气泡颜色数组大小时，气泡颜色不重复
    if (!bakeColor.length) bakeColor = [...colorData];
    let colorSet = new Set(bakeColor);
    let curIndex = Math.round(Math.random() * (colorSet.size - 1));
    let curColor = bakeColor[curIndex];
    colorSet.delete(curColor);
    bakeColor = [...colorSet];
    // 气泡大小设置
    let size = (item[format[1]] * basicSize * 2) / maxValue;
    if (size < basicSize) size = basicSize;
    console.log(colorSet.size);
    bubbleData.push({
      name: item[format[0]],
      value: item[format[1]],
      symbolSize: size,
      draggable: true,
      itemStyle: {
        normal: {
          color: new echarts.graphic.RadialGradient(0.5, 0.5, 1, [
            {
              offset: 0,
              color: curColor[0],
            },
            {
              offset: 1,
              color: curColor[1],
            },
          ]),
          opacity: 0.9,
          shadowColor: "transparent",
        },
      },
    });
  }

  let myChart0 = echarts.init(main0.value);

  let option0 = {
    animationEasingUpdate: "bounceIn",
    series: [
      {
        type: "graph",
        layout: "force",
        force: {
          repulsion: repulsion,
          edgeLength: 10,
        },
        label: {
          normal: {
            show: true,
            formatter: function (params) {
              var res = params.data.name + "\n" + params.data.value;
              return res;
            },
            color: "#fff",
            textStyle: {
              fontSize: "14",
            },
          },
        },
        // 是否开启鼠标缩放和平移漫游
        roam: false,
        // label: { normal: { show: true } },
        data: bubbleData,
      },
    ],
  };
  myChart0.setOption(option0);
  window.addEventListener("resize", () => {
    myChart0.resize();
  });
}