Hi, I'm trying to get histroy data from Duka using Jforex API.
It looks like i can get very limited number of bars in history, less than 1000 (1minute).
it is possible to get more ?

i'll explain what i did
i'm using
java.util.List bars = history.getBars(Instrument.EURUSD, Period.ONE_MIN, OfferSide.ASK,Filter.WEEKENDS,60, (long)From,0 );

this command is showing i try to get 60 bars from "From" date.
when i try to get the latest 60 bars FROM NOW, i succesfully get them.
if i try to get 60 bars FROM a week before i get "Error while loading bars"
if i try to get 60 bars FROM 6 minutes ago, i get them.

what can i do to get more bars ? more history ?

Consider selecting a different period. It is advised to load smaller chunks of data, see an example here:
https://www.dukascopy.com/wiki/index.php ... _by_period

In case you are just trying to get historical bar data see:
viewtopic.php?f=65&t=25376&p=46856#p46856
You can also download the bar data in JForex Client Historical tester, by choosing Save Data.

using the client doesn't help me. i need to get large amount of bars using programming.
the message you gave link to, didn't make stuff more clear.
it talks about client.downloadData which send data to cache (which i cannot access, don't have the format of these fileS)...which doesn't help.
searching about it, i cannot find how to use it. let say i need 10000 bars of 1min, where downloaddata, is putting this ?


i simply need something like getbars, which will let me download large amounts of data.
getbars, allow me to get 800 bars of minutes, 800 bars of 15min, 800 of 30 min....
what if i want 10000 bars of 1 minute, without using the client ?
what can i do ?


examples would be appriciated
thanks

Consider changing 10 to 10000 in the following example:
https://www.dukascopy.com/wiki/index.php ... igh_values
Mind that working with such amount of objects might cause OutOfMemoryException (this depends great deal on your heap size settings).

i get error while loading bars.
even if i try to get 60 bars, a week ago. get same error.
it looks like duka is accumulating in getbars, only up to 800 bars including the weekend.

question if its possible to program something as the client is doing, i don't care programing something that will save into the CSV file, as the client.
possible ?

Could you please post the exception that you receive? Also please check if there is any exception on java console:
viewtopic.php?f=81&t=39073

well solved one error by using the history.getBarStart

whats happening now is, i can get 60 bars of any date BUT up to 1 july 2011
if i try 60 bars before 6/30/2011... i get error

com.dukascopy.api.JFException: Error while loading bars

the line i'm using is :

java.util.List bars = history.getBars(Instrument.EURUSD, Period.ONE_MIN, OfferSide.ASK, Filter.NO_FILTER, 60, (long)From, 0);

i wrote same code in java...(previous code was in C#)
suddenly its all working. no limits.
really strange, would really appriciate if you have some idea why its not working on C# (i wrote a whole trading code for duka using C#...without any problems)

Please refer to the common topic for JForex on .Net:
viewtopic.php?f=65&t=23971