echarts饼图图例展示

要在echarts饼图中展示图例，可以使用legend属性来配置。通过设置orient属性为"vertical"可以实现垂直布局，而设置left属性可以控制图例的位置在左侧。此外，还可以设置itemWidth和itemHeight属性来调整图例的宽度和高度，设置itemGap属性来调整图例之间的间隙，设置bottom属性来控制图例的位置在底部。同时，可以设置textStyle属性来定义图例的字体样式，如颜色、字号和字体等。例如：

legend: {
  orient: "vertical",
  left: "left",
  itemWidth: 8,
  itemHeight: 8,
  itemGap: 30,
  bottom: "bottom",
  textStyle: {
    color: "#000",
    fontSize: 14,
    fontFamily: "微软雅黑"
  }
}

这样就可以在echarts饼图中展示图例了。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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