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Hello,
Support will be glad to help you with configuring your database properly.
The video shows 90000 bars which is good value for stocks that trade
only 8 hours per day. If you using futures you would need to increase
number of bars to get more days daily data in mixed mode.
With regards to other questions:
2. no
3. no
4. mixed mode is combined eod and intraday data in one database.
Best regards,
Tomasz Janeczko
amibroker.com
On 2009-12-14 14:52, ganamide wrote:
> Tomasz,
>
> I followed the video instructions exactly as you suggested and it seemed fine at first, but I now see the same exact problem as before - my daily data has become truncated to match exactly the amount of 1 minute data. I haven't pinned down the exact steps to reproduce, but it may have something to do with manually forcing backfill, or by manually saving the database, or by closing and opening AB several times.
>
> Perhaps you will now answer my previous questions 2-4 below.
>
> Thanks,
> Chris
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko"<groups@xxx> wrote:
>
>> Hello,
>>
>> You need to setup your database precisely as shown in the video:
>> http://www.amibroker.com/video/IQFeed.html
>>
>> 10000 bars is too few in order to accomodate both EOD and intraday mixed,
>> 10000 means that you get *only* intraday, you need 90000 to use mixed data,
>> as shown in the video.
>>
>> The best thing is to follow documentation/videos precisely.
>>
>> Answers to 2/3/4 are the same: configure your database as shown in the video
>> and won't need anything mentioned below.
>>
>> Best regards,
>> Tomasz Janeczko
>> amibroker.com
>> ----- Original Message -----
>> From: "ganamide"<ganamide@xxx>
>> To:<amibroker@xxxxxxxxxxxxxxx>
>> Sent: Wednesday, November 25, 2009 10:21 PM
>> Subject: [amibroker] Re: Mixed EOD/Intraday data limitations?
>>
>>
>>
>>> Tomasz,
>>>
>>> I still have questions regarding how the mixed EOD/Intraday data actually works. I am using IQFeed and when allowing mixed data, I
>>> get mixed results. It seems like when I initially add a symbol to the database, I get full EOD data (i.e. several years), but when
>>> I force a backfill, the EOD data is truncated to the amount of intraday data that the database is specified to hold (i.e. 10,000
>>> 1-minute bars = 7 daily bars.)
>>>
>>> 1. How is the mixed EOD/intraday data feature implemented? Is it only storing data in the shortest interval (i.e., 1 minute)? Do I
>>> really need to load over 1,000,000 1 minute bars just so that I can see 4 years of daily futures data (24 hours session) when
>>> using the mixed data setting?
>>>
>>> 2. I am not sure if you answered this question that the original poster asked: If we use separate databases for EOD and intraday
>>> data, can we access both databases from a single backtest?
>>>
>>> 3. Related to question 2, can chart drawings be shared between two databases? I really like being able to draw a trendline on a
>>> daily chart and seeing it on a 5 minute chart. Can I do this when using separate databases?
>>>
>>> 4. Is it possible that you will add in the near future full support for combined EOD and intraday data, using separate stores for
>>> each in the same database?
>>>
>>> Dziekuje bardzo!
>>> Chris
>>>
>
>
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**** IMPORTANT PLEASE READ ****
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