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How to receive last value of indicator on custom period?
janjjj
 Post subject: How to receive last value of indicator on custom period? Post rating: 0   New post Posted: Tue 27 Aug, 2013, 09:20 

User rating: 3
Joined: Thu 28 Jul, 2011, 19:40
Posts: 72
Location: PolandPoland
I try receive last (0) value of indicarotr (EMA) using custom period 3 min.

if I try use it in this way:

indicators.ema(instrumentThis, Period.createCustomPeriod(Unit.Minute, 3), OfferSide.BID, IIndicators.AppliedPrice.CLOSE, 20, 0);


I receive NaN. It is bug? or I can do this in other way?

Below simple strategy where I try to use it.

Please help


Attachments:
CustomPeriodInIndicatorTest.java [1.3 KiB]
Downloaded 363 times
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API Support
 Post subject: Re: How to receive last value of indicator on custom period? Post rating: 0   New post Posted: Tue 27 Aug, 2013, 11:54 
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Joined: Fri 31 Aug, 2007, 09:17
Posts: 6139
Download and run the example given here:
https://www.dukascopy.com/wiki/#Indicator_Calculation/Universal_price_feed
 
janjjj
 Post subject: Re: How to receive last value of indicator on custom period? Post rating: 0   New post Posted: Tue 27 Aug, 2013, 16:06 

User rating: 3
Joined: Thu 28 Jul, 2011, 19:40
Posts: 72
Location: PolandPoland
It also does not work. For standard periods all is ok. Problem is with custom periods.

I try alseo this way:

IFeedDescriptor feedDescriptor = new TimePeriodAggregationFeedDescriptor(instrumentThis, Period.createCustomPeriod(Unit.Minute, 3), OfferSide.BID);
            Object[] emaFeed = indicators.calculateIndicator(feedDescriptor, new OfferSide[] { OfferSide.BID }, "EMA",
            new IIndicators.AppliedPrice[] { IIndicators.AppliedPrice.CLOSE }, new Object[] { 20 }, 0);
            double em = (Double) emaFeed[0];


And it also return NaN.

Please help me.
 
API Support
 Post subject: Re: How to receive last value of indicator on custom period? Post rating: 0   New post Posted: Tue 27 Aug, 2013, 16:10 
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Joined: Fri 31 Aug, 2007, 09:17
Posts: 6139
Mind that you need to subscribe to the feed, as given in the example.
 
janjjj
 Post subject: Re: How to receive last value of indicator on custom period? Post rating: 0   New post Posted: Tue 27 Aug, 2013, 21:10 

User rating: 3
Joined: Thu 28 Jul, 2011, 19:40
Posts: 72
Location: PolandPoland
It works. Thanks
 
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