Hello.
Im just wondering why my calculated indicator results is different from Indicator on histogram value with the same settings in strategy backtesting.
My code for RSI indicator calculation:

   private double GetRSIvalue(int shift, int period) throws JFException{
       double rsi =0;
       rsi=indicators.rsi(gSymbol, gPeriod, OfferSide.BID, AppliedPrice.WEIGHTED_CLOSE, period,shift);    
       return rsi;                        
   }

with this code I get for specific time different results comparing with on chart indicator.
Help me please find where is the problem.

Thank You

Wiki.

Probably you use different filter on the chart and in the source...

Hi. No, filters are the same!

Precise indicator result depend on when the indicator calculation is started. Chart calculates the values on a large period but strategy uses only lookback. This causes indicator output values to differ. This does not mean that relative indicator values are bad. Both indicator outputs will usually produce same signals.

To bring strategy values closer to chart outputs indicator needs to be called with more values (e.g. 200). To do that the strategy can call this function:
https://www.dukascopy.com/client/javadoc/com/dukascopy/api/IIndicators.html#rsi(com.dukascopy.api.Instrument,%20com.dukascopy.api.Period,%20com.dukascopy.api.OfferSide,%20com.dukascopy.api.IIndicators.AppliedPrice,%20int,%20com.dukascopy.api.Filter,%20int,%20long,%20int)

Thanx!