Method getName

src/data/SeriesData.ts:731–741

* @return Never be null/undefined. `number` will be converted to string. Because: * In most cases, name is used in display, where returning a string is more convenient. * In other cases, name is used in query (see `indexOfName`), where we can keep the * rule that name `2` equals to na

(idx: number)

     * rule that name `2` equals to name `'2'`.
     */
    getName(idx: number): string {
        const rawIndex = this.getRawIndex(idx);
        let name = this._nameList[rawIndex];
        if (name == null && this._nameDimIdx != null) {
            name = getIdNameFromStore(this, this._nameDimIdx, rawIndex);
        }
        if (name == null) {
            name = '';
        }
        return name;
    }

    private _getCategory(dimIdx: number, idx: number): OrdinalRawValue {
        const ordinal = this._store.get(dimIdx, idx);