echarts绘制一个环形图2

2023-12-14 03:12:56

其他echarts:

echarts绘制一个环形图

echarts绘制一个柱状图,柱状折线图

echarts绘制一个饼图?

效果:

组件代码:

<template>
  <div class="wrapper">
    <div ref="doughnutChart2" id="doughnutChart2"></div>
  </div>
</template>

<script>
export default {
  mixins: [],
  components: {},
  props: {
    table: {
      type: Object,
      default: {
        datas: {},
        color: [],
      },
    },
    hollowOut: {
      //是否中空
      type: Boolean,
      default: false,
    },
  },
  data() {
    return {
      limitLength: 7, //显示name长度
      showTotalNum: false, //是否显示总数
      totalNum: 0, //总数
    };
  },
  created() {},
  mounted() {},
  watch: {
    table: {
      handler(newVal) {
        if (newVal) {
          // 进行数据处理操作
          if (newVal.limitLength) this.limitLength = newVal.limitLength;
          //计算总数
          if (newVal.showTotalNum) {
            this.showTotalNum = newVal.showTotalNum;
            this.totalNum = this.calculatePropertySum(newVal.datas, "VALUE");
          }
          const generateRandomColor = () => {
            var r = Math.floor(Math.random() * 201); // 随机生成红色通道值(0-200)
            var g = Math.floor(Math.random() * 255); // 随机生成绿色通道值(0-200)
            var b = Math.floor(Math.random() * 201); // 随机生成蓝色通道值(0-200)

            let hex =
              "#" + componentToHex(r) + componentToHex(g) + componentToHex(b);
            return hex;
          };
          const componentToHex = (c) => {
            let hex = c.toString(16);
            return hex.length == 1 ? "0" + hex : hex;
          };
          newVal.datas.map((item, index) => {
            if (!newVal.color[index]) {
              let a = generateRandomColor();
              newVal.color.push(a);
            }
          });
          setTimeout(() => {
            this.init();
          });
        }
      },
    },
  },
  methods: {
    init() {
      let option = {
        tooltip: {
          trigger: "item",
          formatter: "{b} : {c} ({d}%)",
        },
        title: [
          {
            show: this.showTotalNum,
            text: this.totalNum,
            left: this.$common.adjustOffset(
              this.totalNum,
              this.table.legendLocation == "left" ? "65%" : "47.5%",
              this.table.legendLocation == "left" ? "48%" : "42%"
            ).adjustedLeft,
            top: this.$common.adjustOffset(
              this.totalNum,
              this.table.legendLocation == "left" ? "65%" : "47.5%",
              this.table.legendLocation == "left" ? "48%" : "42%"
            ).adjustedTop,
            textStyle: {
              color: "#333333",
              fontSize: "22",
              fontWeight: "600",
              textAlign: "center", // 设置标题居中对齐
            },
          },
          {
            show: this.showTotalNum,
            text: "总计",
            left: this.$common.adjustOffset(
              "总计",
              this.table.legendLocation == "left" ? "65%" : "47.5%",
              this.table.legendLocation == "left" ? "33%" : "29.5%"
            ).adjustedLeft,
            top: this.$common.adjustOffset(
              "总计",
              this.table.legendLocation == "left" ? "65%" : "47.5%",
              this.table.legendLocation == "left" ? "33%" : "29.5%"
            ).adjustedTop,
            textStyle: {
              color: "#333333",
              fontSize: "12",
              fontWeight: "500",
              textAlign: "center", // 设置标题居中对齐
            },
          },
        ],
        //颜色注释显示的位置
        legend: {
          orient:
            this.table.legendLocation == "left" ? "vertical" : "horizontal",
          type: "scroll", //颜色过多可以滚动
          left: this.table.legendLocation == "left" ? 0 : "center",
          top: this.table.legendLocation == "left" ? "top" : "bottom",
          icon: this.table.legendIcon ? "circle" : "",
          formatter: (name) => {
            let seriesData = option.series[1].data; // 数据在series的第几个中
            let total = 0;
            for (let i = 0; i < seriesData.length; i++) {
              total += seriesData[i].value;
            }
            for (let j = 0; j < seriesData.length; j++) {
              if (name === seriesData[j].name) {
                let percent = ((seriesData[j].value / total) * 100).toFixed(2);
                if (name.length > this.limitLength) {
                  return (
                    name.substring(0, this.limitLength) +
                    "..." +
                    " " +
                    seriesData[j].value +
                    " " +
                    percent +
                    "%"
                  );
                } else {
                  return name + " " + seriesData[j].value + " " + percent + "%";
                }
              }
            }
          },
        },
        series: [
          // {
          //   type: "pie",
          //   radius: ["39%", "41%"],
          //   center: ["67%", "50%"],
          //   avoidLabelOverlap: false,
          //   label: {
          //     show: false,
          //     position: "center",
          //   },
          //   emphasis: {
          //     label: {
          //       show: true,
          //       fontSize: "30",
          //       fontWeight: "bold",
          //     },
          //   },
          //   labelLine: {
          //     show: false,
          //   },
          //   data: [
          //     {
          //       value: 1,
          //       name: undefined,
          //       itemStyle: {
          //         color: new this.$E.graphic.LinearGradient(0, 0, 0, 1, [
          //           { offset: 0, color: "rgba(255, 255, 255, 0)" },
          //           { offset: 0.24, color: "rgba(153, 140, 255, 1)" },
          //           { offset: 0.5, color: "rgba(117, 104, 255, 1)" },
          //           { offset: 0.24, color: "rgba(153, 140, 255, 1)" },
          //           { offset: 1, color: "rgba(255, 255, 255, 0)" },
          //         ]),
          //       },
          //       hoverAnimation: false,
          //     },
          //   ],
          //   graphic: [
          //     {
          //       type: "path",
          //       shape: {
          //         cx: 0.5,
          //         cy: 0.5,
          //         r: "15%",
          //       },
          //       style: {
          //         fill: "none",
          //         stroke: "purple",
          //       },
          //     },
          //   ],
          // },
          {
            color: ["#163d59"],
            type: "gauge",
            center:
              this.table.legendLocation == "left"
                ? ["67%", "50%"]
                : ["50%", "40%"],
            startAngle: 150,
            endAngle: -209.999,
            splitNumber: 7,
            radius: this.table.legendLocation == "left" ? "80%" : "60%",
            pointer: {
              show: false,
            },
            progress: {
              show: false,
              roundCap: true,
              width: 1,
            },
            axisLine: {
              show: false,
              lineStyle: {
                width: 10,
                color: "#D7D7E3", //线的颜色
              },
            },
            axisTick: {
              distance: -25,
              length: 10,
              splitNumber: 10, //线的密度
              lineStyle: {
                width: 2, //线的宽度
                color: "#D7D7E3", //线的颜色
              },
            },
            // 隔几个变长
            splitLine: {
              show: false,
            },
            axisLabel: {
              show: false,
            },
            anchor: {
              show: false,
            },
            title: {
              show: false,
            },
            detail: {
              show: false,
            },
            data: [],
          },
          {
            type: "pie",
            center:
              this.table.legendLocation == "left"
                ? ["67%", "50%"]
                : ["50%", "40%"],
            radius:
              this.table.legendLocation == "left"
                ? ["60%", "85%"]
                : ["45%", "65%"], //饼图的半径,第一项是内半径,第二项是外半径
            avoidLabelOverlap: false,
            itemStyle: {
              // borderRadius: 5,
              borderColor: "#fff",
              borderWidth: 3,
            },
            label: {
              position: "inner",
              formatter: "{c}",
            },

            // emphasis: {
            //   label: {
            //     show: true,
            //     fontSize: 40,
            //     fontWeight: "bold",
            //   },
            // },
            data: this.table.datas.map((item, index) => {
              let obj = {
                // label: { color: this.table.color[index] },
                name: item.NAME,
                value: item.VALUE || item.NUM,
              };
              return obj;
            }),
          },
        ],
      };
      let chartDom = this.$refs.doughnutChart2;
      let myChart = this.$E.init(chartDom);
      myChart.setOption(option);
    },
    //计算总和
    calculatePropertySum(arr, property) {
      return arr.reduce((sum, obj) => {
        const value = parseFloat(obj[property]);
        if (!isNaN(value)) {
          return sum + value;
        } else {
          return sum;
        }
      }, 0);
    },
  },
};
</script>

<style scoped lang="scss">
.wrapper {
  width: 100%;
  height: 100%;
  position: relative;
  #doughnutChart2 {
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    position: absolute;
    top: 0;
    left: 0;
  }
}
</style>

组件调用:

<DoughnutChart2 :style="{ height: heightNew }" :table="table" />
// heightNew  动态计算的高度
// table:
/**
 * {
  "datas": [
    {
      "NAME": "主任护师",
      "VALUE": 10
    },
    {
      "NAME": "副主任护师",
      "VALUE": 64
    },
    {
      "NAME": "主管护师",
      "VALUE": 418
    },
    {
      "NAME": "护师",
      "VALUE": 397
    },
    {
      "NAME": "护士",
      "VALUE": 86
    }
  ],
  "color": [
    "#5470c6",
    "#91cc75",
    "#fac858",
    "#ee6666",
    "#73c0de",
    "#3ba272",
    "#fc8452",
    "#9a60b4",
    "#ea7ccc",
    "#8364FF",
    "#36F4D7",
    "#FBB03C"
  ],
  "legendLocation": [
    "left"
  ],
  "showTotalNum": true,
  "legendIcon": [
    "round"
  ]
}
 */

文章来源:https://blog.csdn.net/qq_43807473/article/details/134878811
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