Angle axis in polar axis not rendering negative values correctly

[ThomasSteiner]

Version

4.6.0

Steps to reproduce

option = {
    angleAxis: {
        type: 'category',
        data: ['S1', 'S2', 'S3']
    },
    radiusAxis: {
        min:-1,
        max: 3

    },
    polar: {
    },
    series: [{
        type: 'bar',
        data: [1, 1, 1],
        coordinateSystem: 'polar',
        itemStyle:{
            color:"blue"

        },
        name: 'A',
        stack: 'a'
    }, {
        type: 'bar',
        data: [1, 1, 1],
        coordinateSystem: 'polar',
        name: 'B',
        stack: 'a'
    }, {
        type: 'bar',
        data: [1, 1, 1],
        coordinateSystem: 'polar',
        name: 'C',
        stack: 'a'
    }],
    legend: {
        show: true,
        data: ['A', 'B', 'C']
    }
};

What is expected?

Stack values should start at 0 and reflect correct values across the radius axis

What is actually happening?

Stack values resize and are forced to start at center of circle rather than 0 point of radius axis

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[Ovilia]

Thanks for reporting. This is a bug.

[echarts-bot[bot]]

This issue is labeled with difficulty: easy. @ThomasSteiner Would you like to debug it by yourself? This is a quicker way to get your problem fixed. Or you may wait for the community to fix.

Please have a look at How to debug ECharts if you'd like to give a try. 🤓

[sikazhang]

I have located the problem at the file barPolar.js, it seems that the value of baseCoord is incorrect. based on the code, baseCoord = valueAxis.getExtent()[0]; Howerver I can't find out the correct variable to replace it. If anyone solves the problem, please @ me and give me a chance to learn, TX!

[web3fans]

This case I have modified the data [1,1,1]to [2,2,2],and change the radiusAxis.min to 1, and found that the view is wrong. This is my option:

option = {
    angleAxis: {
        type: 'category',
        data: ['S1', 'S2', 'S3']
    },
    radiusAxis: {
        min: 1,
        max: 6
    },
    polar: {
    },
    series: [{
        type: 'bar',
        data: [2, 2, 2],
        coordinateSystem: 'polar',
        itemStyle:{
            color:"blue"

        },
        name: 'A',
        stack: 'a'
    },
    {
        type: 'bar',
        data: [2, 2, 2],
        coordinateSystem: 'polar',
        name: 'B',
        stack: 'a'
    },
    {
        type: 'bar',
        data: [2, 2, 2],
        coordinateSystem: 'polar',
        name: 'C',
        stack: 'a'
    }],
    legend: {
        show: true,
        data: ['A', 'B', 'C']
    }
};

So I guess this ”min“ do not support value except 0.