[pugliosParticipant August 17, 2014 at 9:25 pm Post count: 3]

in reply to: Are Dukascopy data consistent across TF? #20277

@tickstory wrote:

Given that the errors for MT4 ‘mismatch errors’ are not very well documented, we would prefer to look through the raw data and see if the various corresponding bars in all time-frames match up.

Hi TickStory support team,
I’ve drilled down few of the mismatch errors reported and looked into the raw data myself: it seems that you are right. In all the samples data were consistent and MT4 was reporting a non-existent error. Although this sounds like a bug of the MT4 Test Generator, knowing that we can ignore the mismatch errors if we trust the source of the historical data is of some relief. Thanks TickStory for the light shed over the question.

Instead as far as it concerns the data gaps, these are quite easy to spot using the utility linked in my previous post. In the screenshot attached there is an example of a data gap on 24 Feb 2014 for EURUSD. Anyway they are quite rare indeed.
[attachment=0:1alxxj0n]DataGap.png[/attachment:1alxxj0n]

[pugliosParticipant August 15, 2014 at 10:32 pm Post count: 3]

in reply to: Are Dukascopy data consistent across TF? #20275

Thank you TickStory support team, your answers confirm my guesses: the 99% is an arbitrary number and the HST files downloaded from Dukascopy are not 100% perfect. In particular not only the files have data mismatches between M1 and higher TF (and not just for volumes) but recently I found also some data gaps (i.e. prices data missing for few short periods of time). These gaps can be easily spotted on MT4 with this simple MQL code http://www.mql5.com/en/code/11643.

Anyway I don’t want to sound over-critic: these errors are just little glitches, especially in comparison with what MetaQuotes offers by default. Having all these data and also tick data available for free, is simply a superb service.
Thank you TickStory.

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