public static BbandItem Bbands(this IEnumerable <ICandle> candles, int?period = null, double?devUp = null, double?devDown = null, TicTacTec.TA.Library.Core.MAType?type = null)
{
period ??= 5;
devUp ??= 2;
devDown ??= 2;
type ??= TicTacTec.TA.Library.Core.MAType.Sma;
IIndicatorOptions options = new BbandsOptions(period.Value, devUp.Value, devDown.Value, type.Value);
Bbands bbands = new Bbands();
return((BbandItem)bbands.Get(candles, options));
}
public override dynamic Get(IEnumerable <ICandle> source, IIndicatorOptions options = null)
{
BbandsOptions config = options != null ? (BbandsOptions)options.Options : new BbandsOptions(5, 2, 2, TicTacTec.TA.Library.Core.MAType.Sma);
double[] upperValues = new double[source.Count()];
double[] middleValues = new double[source.Count()];
double[] lowerValues = new double[source.Count()];
double[] closes = source.Select(x => Convert.ToDouble(x.Close)).ToArray();
var bbands = TicTacTec.TA.Library.Core.Bbands(0, source.Count() - 1, closes, config.Period, config.DevUp, config.DevDown, config.Type, out int outBegIdx, out int outNbElement, upperValues, middleValues, lowerValues);
if (bbands == TicTacTec.TA.Library.Core.RetCode.Success)
{
return(new BbandItem()
{
UpperBand = FixIndicatorOrdering(upperValues.ToList(), outBegIdx, outNbElement),
MiddleBand = FixIndicatorOrdering(middleValues.ToList(), outBegIdx, outNbElement),
LowerBand = FixIndicatorOrdering(lowerValues.ToList(), outBegIdx, outNbElement)
});
}
throw new Exception("Could not calculate Bbands!");
}
