Temporary solution for chart radar can display axisLabel correctly.

[jeoy]

• fix bug radar axisLabel support removed in eCharts4 #9282

Add a defensive statement for axisModel.getCategories, so axisLabel of chart radar can display correctly (cannot trigger event though, which isn't used widely).

It's a temporary solution until axisLabel of chart radar supported in the next release.

[Ovilia]

LGTM. @100pah Please have a check.

Tested with the following demo and worked.

option = {
    title: {
        text: '基础雷达图'
    },
    tooltip: {},
    legend: {
        data: ['预算分配（Allocated Budget）', '实际开销（Actual Spending）']
    },
    radar: {
        // shape: 'circle',
        name: {
            textStyle: {
                color: '#fff',
                backgroundColor: '#999',
                borderRadius: 3,
                padding: [3, 5]
            }
        },
        indicator: [
            { name: '销售（sales）', max: 6500 },
            { name: '管理（Administration）', max: 16000 },
            { name: '信息技术（Information Techology）', max: 30000 },
            { name: '客服（Customer Support）', max: 38000 },
            { name: '研发（Development）', max: 52000 },
            { name: '市场（Marketing）', max: 25000 }
        ],
        axisLabel: {
            show: true
        },
    },
    series: [{
        name: '预算 vs 开销（Budget vs spending）',
        type: 'radar',
        // areaStyle: {normal: {}},
        data: [
            {
                value: [4300, 10000, 28000, 35000, 50000, 19000],
                name: '预算分配（Allocated Budget）'
            },
            {
                value: [5000, 14000, 28000, 31000, 42000, 21000],
                name: '实际开销（Actual Spending）'
            }
        ]
    }]
};

[100pah]

Thanks @jeoy