eeve commented on issue #4643:
URL: https://github.com/apache/echarts/issues/4643#issuecomment-2556237081
仅供参考：
```js
var line1Data = [820, 932, 901, 934, 1290, 1330, 1320];
var line2Data = [420, 132, 1201, 634, 690, 1830, 820];
// line1Data 和 line2Data 围成的圈
var line3Data = line1Data.map((d, i) => [i, d]).concat(
[...line2Data].reverse().map((d, i) => [line1Data.length - i - 1, d])
);
option = {
xAxis: {
type: "category",
data: ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]
},
yAxis: {},
series: [
{
data: line1Data,
type: "line"
},
{
data: line2Data,
type: "line"
},
{
data: line3Data,
areaStyle: {},
lineStyle: {
width: 0 // 只显示填充部分，不显示线部分
},
type: "line"
}
]
}
```
效果图：
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