helgasoft opened a new issue, #19182:
URL: https://github.com/apache/echarts/issues/19182
### What problem does this feature solve?
The feature will solve several current radar problems like #16605, #15339,
#10750, #10537, etc.
Current design is custom, unique and inconsistent with other charts. As a
result, support and maintenance are more difficult.
### What does the proposed API look like?
Current **radar** series structure treats individual series as _data_ :
```
series: [{
type: 'radar',
data : [
{
value : [4300, 10000, 28000, 35000, 50000, 19000],
name : 'Allocated Budget'
},
{
value : [5000, 14000, 28000, 31000, 42000, 21000],
name : 'Actual Spending'
}
]
}]
```
Proposed API is having individual **line series**, as in
[polar](https://echarts.apache.org/examples/en/editor.html?c=polar-roundCap).
Radar is similar to polar but does not have its own _coordinateSystem_.
```
series: [
{ type: 'line', name: 'Allocated Budget', coordinateSystem: 'radar',
data : [ 4300, 10000, 28000, 35000, 50000, 19000]
},
{ type: 'line', name: 'Actual Spending', coordinateSystem: 'radar',
data : [5000, 14000, 28000, 31000, 42000, 21000]
}
]
```
I think radar chart should be restructured like polar. With its specific
[radar axis](https://echarts.apache.org/en/option.html#radar) and
**coordinateSystem**, so that radar series become consistent with other series
in ECharts.
[Demo
Code](https://echarts.apache.org/examples/en/editor.html?code=CYQwLiCMC8AEDaBWRAaA7GllsoEz5WQF0BuAKFAlznlwGY6sMsCAOVvB0sgewAcwASx4A7WHADeZWLAA2AUwDm8kcABcsCbAC-KabD49ZIAE4aJu_SZDBBAVwDOAQQAegh-ZBuHAGUEj5NQkHAAseAHc1ADMQWQd5XVgvdx8QACN5WSDQiOjY-MTkhwAVQQBjAGtssMiYuITLGRARRQVXd3N9GTAATz5A2AByADdYu3lBvRkZBwgTMCcWhQ0ABn1G2DAeIyE-TunNk0FFZTMhosmupO8ABR5_MHkzqQPuvoHBspMeBwdBq-06ymsHiR3kHgQVxerzK2xMthE4HkAGUerN5ABbDSDQzGEyXV6wREYj6yfwTFBJEzyEDI3rLTSw2Q8M6DanASawfggMqCXpqFYAOjoGwOvX62LJAQJr0oIA0csgAOBMmhB1hLIRSNR6KxQ1xphlB2JpPJuE5phpdJ6DIkTJZ2LSsnGnO5vP5QpFKum4tN0u9MjlCvAIFwAP0RDI2hIQA).
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