I hava difficulties plotting a correct upper and lower band for the Bollinger Band indicator. The result from my code does show the same shape of the graph but does not match the upper and lower bands.
Bellow is the code, which should be plotting the Bollinger Bands
self.bband = self.BB("EURUSD", 20, 2, MovingAverageType.Simple) #, Resolution.Minute);
self.RegisterIndicator("EURUSD", self.bband, Consolidator)
self.SetWarmUp(100)
self.Plot("BB", "UpperBand", self.bband.UpperBand.Current.Value)
self.Plot("BB", "MiddleBand", self.bband.MiddleBand.Current.Value)
self.Plot("BB", "LowerBand", self.bband.LowerBand.Current.Value)
Any idea where the calculations might be going wrong?
Shile Wen
Hi Ruslan,
I’m unsure of the problem at hand, but based on what I see, I assume the problem is registering an indicator that uses 5-minutes consolidated bars. If we are consolidating data, we need to create a custom BollingerBands instead of creating it using self.BB when registering our indicator because if we update an indicator created with self., then our indicator would be updated twice the desired number of times. I’ve shown how to do this in the attached backtest.
Best,
Shile Wen
Ruslan Raychev
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