currently, i am testing on BTC/USD
there is a problem while getting the weekly bar
as you know the weekly/daily bar are base on GMT 00:00 as start/end time
so here is how i solve the issue, i try to get previous week market close time, and get the hour bar from weekly open and close time
let say the week bar of 20170828, market closed from 2017/09/01 21:00:00 to 2017/09/03 21:00:00
then i am going to get the hour bar of 2017/09/01 21:00:00 and 2017/09/03 21:00:00
so i can get the actual weekly open and close price
but for week bar of 20170828 as example, the actual open time of next week which the first tick suppose to be
2017/09/03 21:00:00, but the first tick of this week are actually 2017/09/04 00:00

is that a bug? and is there exist a way to get the actual bar?, what i want is just getting the weekly open and close price
tks

Hello,

I had hard time undertanding your question. Here is something that I hope gives you direction.

public void onBar(Instrument instrument, Period period, IBar askBar, IBar bidBar) throws JFException {
         if (!instrument.equals(Instrument.EURUSD) || !period.equals(Period.WEEKLY)){ 
                return; 
         }
         console.getOut().println("W1-Close: " + askBar.getClose() +" W1-Open" + askBar.getOpen());
 
    }
}

https://www.dukascopy.com/client/javadoc/com/dukascopy/api/IStrategy.html

tks, but the onBar method are start/end at GMT 00:00
but the weekly/daily bar are start/end at GMT 21:00

if you use the daily IBar from onBar method it will cause the following issue
let say the week of 20180604
the daily IBar of monday(20180604) will be from 20180603 GMT 00:00 to 20180604 GMT 00:00
and from 20180603 GMT 00:00 to 20180603 GMT 21:00, market are closed
that why the IBar from onBar method are not reliable

Maybe try to get weekly bar from history.getBar() shift 0

public void onBar(Instrument instrument, Period period, IBar askBar, IBar bidBar) throws JFException {
        
        // in here - 0 is current bar, 1 is previous candle, 2 second prev candle etc https://www.dukascopy.com/wiki/en/development/strategy-api/historical-data/history-bars
        IBar weeklyBar = history.getBar(instrument, Period.WEEKLY, OfferSide.BID, 0);
        console.getOut().println( weeklyBar );
        
        if (period.equals(Period.WEEKLY)) {
            console.getOut().println( bidBar );
        }
}

can API support help?

Hello,

Let's see at your example. Weekly bar of 20170828 will be in a time interval from 28.08.2017 00.00 GMT to 04.09.2017 00:00 GMT. First tick of 28.08 also is a bar open price, last tick of 03.09 is a bar close price. In a period from 01.09.2017 21:00 to 03.09.2017 21:00 market is closed, but ticks from last 3 hours of 03.09 also is this bar filling. And next bar of 20170409 will be in a interval 04.09.2017 00:00 to 11.09.2017 00:00.

If you want specify weekly interval exactly from Sunday 21.00 to next Sunday 21.00 you can use custom period with EET timezone, which will work in accordance with your conditions.
Here you can read about custom period creation: https://www.dukascopy.com/swiss/english/forex/jforex/forum/viewtopic.php?f=65&t=56510

        Period myPeriod = Period.createCustomPeriod(Unit.Week, 1, JFTimeZone.EET);
        IBar weeklyBar = history.getBar(instrument, myPeriod, OfferSide.ASK, 0);
        console.getOut().println(weeklyBar);

And you will get weekly bar with start time of Sunday 21:00 GMT.

tks, and this is also my solution, but i use EAT time zone lead to an unexpected result, BTW can you tell me are dukascopy trading server using EET time zone? let say the weekly bar of 2018/03/04, the starting time are GMT 22:00 and changed to 21:00 at next week, is that same as dukascopy summer/winter time changing? since i don't know when did dukascopy changing the summer/winter time