Method lttbDownSample

src/data/SeriesData.ts:1111–1121

* Large data down sampling using largest-triangle-three-buckets * @param {string} valueDimension * @param {number} targetCount

(
        valueDimension: DimensionLoose,
        rate: number
    )

     * @param {number} targetCount
     */
    lttbDownSample(
        valueDimension: DimensionLoose,
        rate: number
    ): SeriesData<HostModel> {
        const list = cloneListForMapAndSample(this);
        list._store = this._store.lttbDownSample(
            this._getStoreDimIndex(valueDimension),
            rate
        );
        return list as SeriesData<HostModel>;
    }

    getRawDataItem(idx: number) {
        return this._store.getRawDataItem(idx);