配置项series.data数组里如果同时存在null和对象,将会报错Cannot read property 'selected' of null

[lvding]

Version

5.0.2

Steps to reproduce

非连续的折线图/柱状图,在3.x和4.x版本时,
series.data可以用类似[null,{value:3},{value:4},null]这样的数组呈现,而在5.x版本时候必须使用[{value:null},{value:3},{value:4},{value:null}]
否则将会报错Cannot read property 'selected' of null

What is expected?

正常呈现非连续的折线图

What is actually happening?

报错Cannot read property 'selected' of null

[echarts-bot]

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[echarts-bot]

This issue is labeled with difficulty: easy.
@lvding 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. 🤓

[leosxie]

i will try to pr this issue

[jonavila]

I ran into this issue in 5.x and I believe it's caused by this method of Series.ts

private _initSelectedMapFromData(data: List) {
        // Ignore select info in data if selectedMap exists.
        // NOTE It's only for legacy usage. edge data is not supported.
        if (this.option.selectedMap) {
            return;
        }

        const dataIndices: number[] = [];
        if (data.hasItemOption) {
            data.each(function (idx) {
                const rawItem = data.getRawDataItem(idx);
                if (typeof rawItem === 'object'
                    && (rawItem as OptionDataItemObject<unknown>).selected
                ) {
                    dataIndices.push(idx);
                }
            });
        }

        if (dataIndices.length > 0) {
            this._innerSelect(data, dataIndices);
        }
    }
    

You can see how it fails if rawItem is null because typeof null === 'object'.

Using undefined in the value instead of null works for me as workaround.

[plainheart]

Great! Like #14404, y'all got the focus of this error. Any contribution will be much appreciated!