MQL5 indicator buffer random values During my coding of an indicator random values would end up in the index buffer if one would switch time frames. It took me a few hours to figure out that if I didn't explicitly set an empty value this would cause this to happen - so the solution is to always set a value during your OnCalculate() loop both for your empty bars and not. /* OnCalculate =========== Called only in custom indicators when it's necessary to calculate the indicator values by the Calculate event. */ int OnCalculate(const int iRatesTotal, const int iPreviousCalculated ,const datetime &time[] ,const double &aOpen[] ,const double &aHigh[] ,const double &aLow[] ,const double &aClose[] ,const long &tick_volume[] ,const long &volume[] ,const int &spread[]) { Print(">>> OnCalculate(): `iRatesTotal=" + iRatesTotal + "`, `iPreviousCalculated=" + iPreviousCalculated + "`"); //int...