Hello,
I'm trying to code a simple Caos strategy and I obtain really strange results between the graphic and the values I get: I've already checked the currencies, applied price, and time frame of both graphic and testing board.
I use One Hour time frame with EUR/USD currency.
there is something I do wrong?

I attach a sample of the code.
best regards

btw... I also downloaded the testStrategy.java of ellisoid (https://www.dukascopy.com/swiss/english/forex/jforex/forum/viewtopic.php?f=6&t=24217) and modifying it to EURUSD and ONE_HOUR I've non-sense values...

Nicola

ps. maybe do you have a comprehensive guide on indicators? for example I don't find anywhere documentations on AC indicators on your API docs.

onBar method receives bars with different periods and different instruments.
Therefore, instrument and period needs to be checked in the beginning of the method.
Please, consider changing onBar method to following code

public void onBar(Instrument instrument, Period period, IBar askBar, IBar bidBar) throws JFException {
       
        // take only bars that correspond to selected instrument and period
        if (!instrument.equals(this.instrument) || !period.equals(this.period))
            return;
        
        IBar CurrHourBar = history.getBar(instrument, period, OfferSide.BID, 0);
       IBar prev1HourBar = history.getBar(instrument, period, OfferSide.BID, 1);
       
       //Current
       double currHourOpen = CurrHourBar.getOpen();
        double currHourClose = CurrHourBar.getClose();
        double currHourHigh = CurrHourBar.getHigh();
        double currHourLow = CurrHourBar.getLow();
      long   currHourTime = CurrHourBar.getTime();
      
        //One Hour Ago
        double prevHourOpen = prev1HourBar.getOpen();
        double prevHourClose = prev1HourBar.getClose();
        double prevHourHigh = prev1HourBar.getHigh();
        double prevHourLow = prev1HourBar.getLow();
        long   prevHourTime = prev1HourBar.getTime();
        
      //Indicators
        
      //AWESOME(5,SMA,34,SMA)
        double[][] Awesome5 = indicators.awesome(
              instrument,                         //Instrument
              period,                            //Period                One Hour
              OfferSide.BID,                         //Offerside               BID
              IIndicators.AppliedPrice.MEDIAN_PRICE,       //Applied Price            MEDIAN PRICE
              5,                                  //FasterMA Time Period      5
              IIndicators.MaType.SMA,                //IIndicators.MaType      SMA
              34,                               //SlowerMA Time Period      34
              IIndicators.MaType.SMA,                //IIndicators.MaType      SMA
              prevHourTime,                         //From                  1 Hour Ago
              currHourTime                        //To                  Current Time
              );
        
        double[][] ac5 = indicators.ac(
              instrument,                         //Instrument
              period,                            //Period                One Hour
              OfferSide.BID,                         //Offerside               BID
              IIndicators.AppliedPrice.MEDIAN_PRICE,       //Applied Price            MEDIAN PRICE
              5,                                  //fastPeriod            5
              34,                                 //slowPeriod            34
              prevHourTime,                         //From                  1 Hour Ago
              currHourTime                        //To                  Current Time
              );
        
        //Set Long Position
        if (ac5[0][1] !=0 ) {
           console.getOut().println("AC Up: " + ac5[0][1]);
           if (!Double.isNaN(Awesome5[1][1])) {
              console.getOut().println("Awe Up: " + Awesome5[1][1]);
                    goLong = true;


           }
        }
        //Set Short Position
        if (ac5[1][1] !=0 ) {
           console.getOut().println("AC Down: " + ac5[1][1]);
           if (!Double.isNaN(Awesome5[2][1])) {
              console.getOut().println("Awe Down: " + Awesome5[2][1]);
                    goShort = true;
           }
        }
       
    }

Information concerning the use of indicators in strategies is available here: https://www.dukascopy.com/wiki/index.php?title=Strategy_API:_Indicators.

Hello,
thank you very much for your answer.
I tried to implement your modification but without success... as you can see in the images attached, the values I obtain with the indicator is completely different from what I see on the graphic.

Nicola

look at the image below.. it quite seems that the Positive/negative value is given by relationship between the value and the Zero...
Is something I do wrong?

thank you a lot
Nicola

A question:
could it be that's only a visual problem?
there's someone who can confirm that the AC indicator works well (maybe could attach a file or a part of file which prove the indicator)?

thank you very much

Nicola

The indicator is working as it should.

1. When the shift parameter is set to 0 the indicator method returns current unfinished bar.
To get last complete bar shift parameter must be set to 1 (e.g. the last parameter in ac method call).

2. Indicator ac is green when the new indicator value is larger than the previous one and red when it is smaller than previous value.

Here is an example:

    public void onBar(Instrument instrument, Period period, IBar askBar, IBar bidBar) throws JFException {

        if (instrument.equals(strategyInstrument) && period.equals(strategyPeriod)) {

            double[] ac1 = indicators.ac(strategyInstrument, strategyPeriod, OfferSide.BID, IIndicators.AppliedPrice.CLOSE, 5, 34, 1);

            double x0 = ac1[0];
            double x1 = ac1[1];
            double x = x0 == 0 ? x1 : x0;

            String color = "_____";
            if (previousValue > x) {
                color = "__red";
            } else if (previousValue < 0) {
                color = "green";
            }

            console.getOut().format("%s %5s % .7f % .7f \n", sdf.format(bidBar.getTime()), color, x0, x1);
            console.getOut().flush();
            
            previousValue = x;
        }
    }
}

Please, see the full strategy in the attachment