Method getData

src/model/Series.ts:369–382

* Consider some method like `filter`, `map` need make new data, * We should make sure that `seriesModel.getData()` get correct * data in the stream procedure. So we fetch data from upstream * each time `task.perform` called.

(dataType?: SeriesDataType)

     * each time `task.perform` called.
     */
    getData(dataType?: SeriesDataType): SeriesData<this> {
        const task = getCurrentTask(this);
        if (task) {
            const data = task.context.data;
            return (dataType == null || !data.getLinkedData ? data : data.getLinkedData(dataType)) as SeriesData<this>;
        }
        else {
            // When series is not alive (that may happen when click toolbox
            // restore or setOption with not merge mode), series data may
            // be still need to judge animation or something when graphic
            // elements want to know whether fade out.
            return inner(this).data as SeriesData<this>;
        }
    }

    getAllData(): ({
        data: SeriesData,