Hi everybody,

I tried to change a bit the example code of the indicator in Wiki in this way:

private Period period = Period.DAILY;
public void onStart(IIndicatorContext context) {
        indicatorInfo = new IndicatorInfo("EXAMPIND", "Sums previous values", "My indicators",false, false, false, 1, 1, 1);
        inputParameterInfos = new InputParameterInfo[] {new InputParameterInfo("Input data", InputParameterInfo.Type.DOUBLE)};
        inputParameterInfos[0].setPeriod(this.period);
        optInputParameterInfos = new OptInputParameterInfo[] {new OptInputParameterInfo("Time period", OptInputParameterInfo.Type.OTHER,new IntegerRangeDescription(2, 2, 100, 1))};
        outputParameterInfos = new OutputParameterInfo[] {new OutputParameterInfo("out", OutputParameterInfo.Type.DOUBLE,OutputParameterInfo.DrawingStyle.LINE)};

    }

(I did that because I'd like to create an indicator which is independent from the chart timeframe)

But I get an exception in the calculate method:

20:01:27 Error in indicator: java.lang.ArrayIndexOutOfBoundsException: 1 @ jforex.Indicator.calculate(Indicator.java:36)

 public IndicatorResult calculate(int startIndex, int endIndex) {
        //calculating startIndex taking into account lookback value
        if (startIndex - getLookback() < 0) {
            startIndex -= startIndex - getLookback();
        }
        int i, j;
        for (i = startIndex, j = 0; i <= endIndex; i++, j++) 
                                                                                                                                          {
           double value = 0;
           for (int k = timePeriod; k > 0; k--) 
           {
              value += inputs[1][i - k];////Line 36 throwing the exception
           }
            outputs[0][j] = value;
        }
        return new IndicatorResult(startIndex, j);
    }

I'm quite new to java, so, sorry if it's a stupid question.
Thank you in advance,
Calogero

You get this exception because you have only 1 input -> one input array, but you are trying to access the element with index 1 (arrays start with 0th element).
For more efficient assistance, please describe in detail what are you trying to do. What do you want to change in the indicator?

Hello support,

I'd like to create an indicator independent of time frames.
Something like sma[n] of typical price but always on the daily timeframe.

Thank you in advance for support.
Calogero

Hello support,

I'd like to create an indicator independent of time frames.
Something like sma[n] of typical price but always on the daily timeframe.

Thank you in advance for support.
Calogero

See:
For more on multiple timeframe indicators see:
https://www.dukascopy.com/wiki/#Indicato ... nt_periods