getDatum method

@override Future<Datum?> getDatum()

Subclasses should implement / override this method to collect the Datum. This method will be called every time data has been buffered for a duration and should return the final Datum for the buffered data.

Can return null if no data is available. Can return an ErrorDatum if an error occurs.

Implementation

@override
Future<Datum?> getDatum() async {
  if (luxValues.isEmpty) return null;

  Stats stats = Stats.fromData(luxValues);
  return LightDatum(
      meanLux: stats.average,
      stdLux: stats.standardDeviation,
      minLux: stats.min,
      maxLux: stats.max);
}