jiawulin001 commented on issue #16840:
URL: https://github.com/apache/echarts/issues/16840#issuecomment-1093774144
Interestingly enough, I find all bar charts start at 0. And since radius
axis bar charts are based on original charts, they must also start at 0.
@pissang Does Echarts need a new feature to accept a number as the starting
value of the bar chart?
However, there's still alternatives for @BillYu811 to achieve the effect you
want. Though you may need to adjust the data a little bit. Here's an example.
<details>
<summary>Code Sample</summary>
```
option = {
title: [
{
text: 'Radial Polar Bar Label Position (middle)'
}
],
polar: {
radius: [30, '80%']
},
radiusAxis: {
min:0,
max:30,
axisLabel:{
formatter: value=>value-120
},
},
angleAxis: {
type: 'category',
data: [" 0-30", " 30-60", " 60-90", " 90-120", "120-150", "150-180",
"180-210", "210-240", "240-270", "270-300", "300-330", "330-360"],
startAngle: 75
},
tooltip: {
formatter: (params)=> `${params.name}: ${(params.value-120).toFixed(1)}`
},
series: {
type: 'bar',
color: "#F53700",
data: [13, 13, 12, 11, 10, 10, 10, 11, 11, 13, 12, 13 ],
//data: [-107,-107,-108,-109,-110,-110,-110,-109,-109,-107,-108,-107],
coordinateSystem: 'polar',
label: {
show: true,
formatter: (params)=> `${(params.value-120)}`
}
},
backgroundColor: '#fff',
animation: false
};
```
</details>
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