Home › Forums › Tickstory Lite › General Discussion › Data consistency issue: changing history

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  • imported_tickstory
    Participant
    February 15, 2014 at 2:54 am
    Post count: 1479
    #19746

    Hi Tickster,

    Note that all the data is provided as-is from Dukascopy – we do not alter it any way nor have the scope to alter the original data files (*.bi5). Another user recently reported the issue of different data (see viewtopic.php?f=4&t=385) and we are unsure of why it was revised, however we do know there was an update to the Dukascopy data format circa Jan 2012.

    In later versions of Tickstory, we plan to have a data comparison feature which may help you resolve this issue.

    Regards.

    tickster
    Participant
    February 16, 2014 at 7:36 pm
    Post count: 5
    #19747

    Hi tickstory

    I was not thinking that tickstory would alter any data, but was of the impression that the data is pre-downloaded from Dukas to tickstory servers from where TS-Light then downloads them.
    Is that not the case? Is the TS-Light tool routing all requests directly to the Dukas-API?

    In any case, I doubt that the changed data has anything to do with the mentioned format change, but rather relates to a data-cleanup that Dukas must have performed recently (as I said, my downloads were still different in Sep 2013, close to 2 years after the format change and only changed between Sep. and now).
    You would not by chance have any connections at Dukas to check and possibly confirm that they have indeed done a data cleanup recently? 😉

    Well, anyhow thanks very much for planning such a data comparison feature – I think it will indeed help to reduce unexplained back testing discrepancies – if changes can’t be avoided by getting things right initially this feature can at least provide awareness and transparency. Normally I would not expect a need to delete and re-download data that i have already extracted, but in such a case it might very well make send – provided I know about it.

    Best regards,

    imported_tickstory
    Participant
    February 16, 2014 at 10:40 pm
    Post count: 1479
    #19748

    Hi Tickster,

    Tickstory intentionally doesn’t try re-check the data if it already exists since this would obviously increase download times and bandwidth. Unfortunately there is no option to simply perform a “checksum”check and retrieve the data only if it has changed.

    Hope this helps.

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