Hi,

I have a custom indicator which has 4 outputs; It is working ok on chart, as expected.
I want now call it from code and get that 4 values calculated for a shift.
I need to use the calculateIndicator() variant with filters and I call it as below. Then I try printout the values but I get a class cast exception errror when it finds (Double)aArr[i] code.
Because I use filter variant with numberOfCandlesBefore/After, I would expect the return data to be in form Object[][] as the built in indicators have this method, but I dont know how to interpret the returned Object[] into my 4 output values. Can you help ?

int aShift = 1;
      IBar aBar = getIBar(aTimeFrame,aShift);
      Object[] aArr = iStrategy.iIndicators.calculateIndicator(iInstr,aTimeFrame,new  OfferSide[] {OfferSide.BID,OfferSide.BID},"MYIND",new IIndicators.AppliedPrice[] {aAppliedPrice}, new Object[]{aTimePeriod,aMaType.ordinal()},Filter.ALL_FLATS,1,aBar.getTime(),0);
      
      if(aArr == null || aArr.length <= 0)
         throw new JFException("Indicator not ready.");   
      
        for (int i=0;i<aArr.length;i++)
           printMessage("output["+i+"]: "+(Double)aArr[i]);

perhaps

(double[][])objs[0]

where objs is the returned value from calculateIndicator().

that's why I'm advocating for a community common library

if I use this

double[][] aValues = (double[][])aArr[0];

I get:

07:07:51 java.lang.ClassCastException: [D cannot be cast to [[D
07:07:51 [D cannot be cast to [[D

In case of only one output line in indicator, I am able to get the value via
double[] aValues = (double [])aArr[0];
return aValues[0]; // my only one output

Also, if I use the indicator with 4 outputs, the above code returns the value of the first output in indicator
and the length aValues.length returned is 1.

But for multiple inicator outputs I get the above errors and unable to retrieved all 4 values. Any help ? Dukascopy ? thank you.

Hi,
It's difficult to give you the answer right away without seeing the actual code of your indicator,
Please have a look at the following example:

long prevBarTime = history.getBar(Instrument.EURUSD, Period.ONE_HOUR, OfferSide.ASK, 1).getTime();
Object[] universalMinMax = indicators.calculateIndicator(Instrument.EURUSD, Period.ONE_HOUR, new  OfferSide[] {OfferSide.ASK}, "MINMAX",  
             new AppliedPrice[] {IIndicators.AppliedPrice.CLOSE}, new Object[]{5}, Filter.ALL_FLATS, 
             1, prevBarTime, 0);    
       
console.getOut().println("universalMinMax values: " + ((double[])universalMinMax[0])[0] + ", " + ((double[])universalMinMax[1])[0]);

I used this and I get correct values from indicator:

double aRsi = ((double[])aArr[0])[0];
double aMfi = ((double[])aArr[1])[0];
double aStoch = ((double[])aArr[2])[0];
double aAvg = ((double[])aArr[3])[0];

Output is correct like on the indicator's chart:
07:15:15 13 Sep 2010 09:00:00 GMT Rsi/Mfi/Stoch/Avg: 0.8527738654072327/0.25278088988213376/-0.3264397962811042/0.25970498633608735

Thank you for your help.