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Multicharts+AMP+CQG, data backfilling unstable


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  #1 (permalink)
 Flydragon95 
Taipei, Taiwan
 
Experience: Beginner
Platform: Multicharts
Trading: YM
Posts: 3 since Aug 2014
Thanks Given: 3
Thanks Received: 1

Hello traders,
I suffered a trouble using MC+CQG combination.
Every Sunday night I used to backfill historical data , after that I found the trading signal often changed!

It seems there is a difference between my real-time trading data and backfilled data,
or may be it's due to CQG's data quality?
is there any good idea I can eliminate this issue?
I have to manually convert the position and suffer the loss.


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  #2 (permalink)
 ABCTG   is a Vendor
 
Posts: 2,447 since Apr 2013
Thanks Given: 493
Thanks Received: 1,639

Flydragon95,

in my opinion the reasons that are most likely to cause such an issue are:

- the backfill data is different to the realtime data (this could be caused by your connection missing ticks live or by the provider not sending them)
- the problem could be within your code

Other reasons could be within your computer - like very high CPU consumption or so, but I wouldn't focus on that at the moment.

Check the data before and after the reload using an indicator counting the ticks and check how different the count is. You might want to open a new chart and compute a fresh count before you do the reload. This way you should detect any difference between the data.

Regards,
ABCTG


Flydragon95 View Post
Hello traders,
I suffered a trouble using MC+CQG combination.
Every Sunday night I used to backfill historical data , after that I found the trading signal often changed!

It seems there is a difference between my real-time trading data and backfilled data,
or may be it's due to CQG's data quality?
is there any good idea I can eliminate this issue?
I have to manually convert the position and suffer the loss.


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Last Updated on August 11, 2014


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