Function sampleSeriesDataPoints

src/data/sampleSeries.ts:112–138

(
  data: ReadonlyArray<DataPoint>,
  sampling: SeriesSampling,
  samplingThreshold: number
)

}

export function sampleSeriesDataPoints(
  data: ReadonlyArray<DataPoint>,
  sampling: SeriesSampling,
  samplingThreshold: number
): ReadonlyArray<DataPoint> {
  const threshold = clampTargetPoints(samplingThreshold);

  // Disabled or already under threshold: keep original reference (avoid extra allocations).
  if (sampling === 'none') return data;
  if (!(threshold > 0)) return data;
  if (data.length <= threshold) return data;

  switch (sampling) {
    case 'lttb':
      return lttbSample(data, threshold);
    case 'average':
      return sampleByBuckets(data, threshold, 'average');
    case 'max':
      return sampleByBuckets(data, threshold, 'max');
    case 'min':
      return sampleByBuckets(data, threshold, 'min');
    default: {
      // Defensive for JS callers / widened types.
      return data;
    }
  }
}