MC does not load all the bars requested?

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2haerim
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MC does not load all the bars requested?

Postby 2haerim » 13 Jul 2008

I tried to plot 1 min chart with 50000 bars, but it always plot less than half of it, for example, 4550 or so. This happens on both InveFeed and sGSDataFeed.

If anyone having TS2ki installed, please try plotting 1 min chart with 50000 bars. Check if MC plots all 50000 bars or not.

Is this a known bug?

2haerim
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Postby 2haerim » 15 Jul 2008

Further experiments show that MC loads up to 22683 bars but fails when more than 22683 bars.

MC definitely has a bug in loading more than 22683 "Bars back". It loads all the data using "Days back" or "From-To" conditions.

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Marina Pashkova
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Joined: 27 Jul 2007

Postby Marina Pashkova » 16 Jul 2008

Haerim,

What you are describing is not a bug but a limitation for the ‘bars back’ requests (if I am not mistaken, we already discussed it with you several months ago).

* no limitations for the resolutions higher than ‘daily’
* 10 years for days
* 91 days for all other resolutions
* if the provider doesn’t have history, then all the data that is available in the database can be plotted
======
For example, you plot stocks. If you have a 7-hr session, 5 days a week, 60 mins an hour 91 days back will equal approx. 30600 min. bars.

To overcome this limitation, just use ‘from…to’ requests.

2haerim
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Postby 2haerim » 16 Jul 2008

Unfortunately, I don't remember we had discussed before.

All I know is that MC limits to plot 1,000,000 bars at most but it also can be extended by changing the related registry value.

* 91 days for all other resolutions
=>What you are saying is that MC will never plot more than 91 days bars if I use "Bars back" setting even if QM has all the data for more than 1,000,000 bars?
Why MC limits that way?

* if the provider doesn’t have history, then all the data that is available in
=> provider had history but MC didn't plot them when Bars back is used


Please check this again.

Thanks.

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Marina Pashkova
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Joined: 27 Jul 2007

Postby Marina Pashkova » 22 Jul 2008

Dear HaeRim,

Please review the explanations above once again.

Thank you.

Best regards.

drwar
Posts: 218
Joined: 31 Jul 2005

Postby drwar » 22 Jul 2008

I am seeing a definite bug in the data loading/data handling. Yesterday I loaded 2 months back of ES 2401 volume bars.(5/21-7/21). I wrote down the last barnumber on the chart. Approximately 42,000 bars. Today ( almost end of day) the same chart with the same setting have only 37,500 bars. where did those 5000 bars of data go? I have noticed the same thing on other charts. I checked the chart and it does indeed go back to 5/21. Its like its loosing data. This computer is running the New beta. I will check my trading computer which is an older version. I can understand some differences which would be the difference between RT data that was recieved and history data loaded off their server. But in one day 5000 bars is not possible.

J~


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