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Hello,
The point is to have long EOD histories AND intraday data.
Of course AmiBroker will compress intraday to daily, but to have 9 years of daily charts you
would need to have nearly one million of bars. With mixed mode you have 120 days intraday
and 9 years of eod in the same database with 10 times less bars.
It is about convenience, hard disk space and speed of processing.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "Terry" <MagicTH@xxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Wednesday, December 27, 2006 6:23 PM
Subject: RE: [amibroker] Re: Which Folders Are Shared By Default Between Multiple AB Installations
> Tomasz,
>
> Thanks. However, I was referring to a daily database where there is no
> intraday data at all. If you had a minute database, then what is the purpose
> of using Mixed EOD/intraday? You can simply click on daily timeframe, right?
> I must be missing something here.
> --
> Terry
>
> -----Original Message-----
> From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf
> Of Tomasz Janeczko
> Sent: Wednesday, December 27, 2006 09:57
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: Re: [amibroker] Re: Which Folders Are Shared By Default Between
> Multiple AB Installations
>
>> Intraday data is NOT saved in Mixed EOD database.
> Incorrect.
>
> As far as mixed EOD/intraday mode is considered, intraday data ARE saved
> together
> with EOD data.
> This mode allows 1-minute (and any higher interval) charts (120+ days) plus
> long (9 years) EOD histories
> from the same database using just 90000 bars.
> Mixed EOD/intraday is available with eSignal as data source
> and "Mixed EOD/Intraday" option selected in File->Database
> Settings->Intraday Settings.
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "Terry" <MagicTH@xxxxxxxxxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Wednesday, December 27, 2006 5:03 PM
> Subject: RE: [amibroker] Re: Which Folders Are Shared By Default Between
> Multiple AB Installations
>
>
>> Intraday data is NOT saved in Mixed EOD database. It simply allows
> updating
>> of the current day's value by every new piece of data received...and it
> only
>> works with certain data suppliers.
>>
>> If you want both you can have a minute database (or whatever timeframe)
> and
>> simply view in a Daily time frame. Of course, this requires orders of
>> magnitude more data than a daily database and long history is not
> available.
>> --
>> Terry
>>
>> -----Original Message-----
>> From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On
> Behalf
>> Of Lester Vanhoff
>> Sent: Tuesday, December 26, 2006 23:28
>> To: amibroker@xxxxxxxxxxxxxxx
>> Subject: [amibroker] Re: Which Folders Are Shared By Default Between
>> Multiple AB Installations
>>
>> Thanks for clarification, TJ. I still would like to have a script that
>> removes old intraday data from mixed eod/intraday data files. Backfilling
>> intraday data for hundreds of tickers can bog down the download. I'll
> create
>> a separate thread for that. Maybe someone has such a such a script.
>>
>> Lester
>>
>> --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx> wrote:
>>>
>>> >
>>> > 1) There were some reports on this forum from users about formulas that
>> got "confused" using mixed data.
>>>
>>> No, no formula can be confused if only "mixed EOD/intraday" is ON because
>> AMiBroker takes all overhead
>>> of extracing EOD data when periodicity or viewing interval is set to
> daily
>> and extracting intraday only if intraday
>>> viewing interval is picked. From the formula point of view it looks like
>> you were running separate dbs.
>>>
>>> >
>>> > 2) How to extract only-eod and only-intraday data for export to ASCii
>> files, in case you want to use that data with other charting
>>> > programs.
>>>
>>> AA Export
>>>
>>
> http://www.amibroker.com/kb/2006/03/04/how-to-export-quotations-from-amibrok
>> er-to-csv-file/
>>>
>>> >
>>> > 3) Maintaining clean data in mixed mode sounds like a nightmare. What
>> about a situation when you watch some ticker in RT for a
>>> > week and then forget about it. You end-up with the file which is mostly
>> eod and has a few days of RT a few months back. A script
>>> > to clean this out would be needed.
>>>
>>> Not really. If you are using eSignal (which has mixed eod/intraday
>> supported) it is all backfilled automatically and you can go for
>>> vacation for 120 days
>>> and it will still continue to have everything automatically backfilled.
> In
>> worst case you just do "force backfill" and you end up
>>> with correct data.
>>>
>>>
>>> Best regards,
>>> Tomasz Janeczko
>>> amibroker.com
>>> ----- Original Message -----
>>> From: "Lester Vanhoff" <ebsn247lsm@xxx>
>>> To: <amibroker@xxxxxxxxxxxxxxx>
>>> Sent: Tuesday, December 26, 2006 11:24 PM
>>> Subject: [amibroker] Re: Which Folders Are Shared By Default Between
>> Multiple AB Installations
>>>
>>>
>>> >> TJ: when having two installations in DIFFERENT folders there are NO
>> folders shared by default ...
>>> >
>>> > Well, I have v4.80.1 (eod) and v4.89.0 (1 minute) installed on the same
>> computer in different folders:
>>> >
>>> > - E:\AmiBroker
>>> > - E:\AmiBrokerR
>>> >
>>> > Eod database is: D:\AmiBroker\Data2
>>> > RT database is: D:\AmiBroker\Data4
>>> >
>>> > When I first tried to access AA on the new installation it just
>> defaulted to formulas folder from the old installation. After
>>> > fixing that and then trying to access AA from the old installation, it
>> opened formula folder from the new installation. This must
>>> > have something to do with the registry. Personally, I find it better to
>> use a single folder for both installations and have no
>>> > complaints.
>>> >
>>> >> TJ: You don't need two installations. From Single installation you can
>> run multiple times and load different databases.
>>> >
>>> > Switching between databases when you trade in real time is
> inconvenient.
>> "Mixed eod/intraday" data sounds like a solution but
>>> > there are a few issues:
>>> >
>>> > 1) There were some reports on this forum from users about formulas that
>> got "confused" using mixed data.
>>> >
>>> > 2) How to extract only-eod and only-intraday data for export to ASCii
>> files, in case you want to use that data with other charting
>>> > programs.
>>> >
>>> > 3) Maintaining clean data in mixed mode sounds like a nightmare. What
>> about a situation when you watch some ticker in RT for a
>>> > week and then forget about it. You end-up with the file which is mostly
>> eod and has a few days of RT a few months back. A script
>>> > to clean this out would be needed.
>>> >
>>> > ------------
>>> >
>>> > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@> wrote:
>>> >>
>>> >> You don't need two installations. From Single installation you can run
>> multiple times and load
>>> >> different databases (File->Open database).
>>> >>
>>> >> And NO, when having two installations in DIFFERENT folders there are
> NO
>> folders shared by default, except
>>> >> if you set your own custom shared folders for formulas (via Prefs).
>> What is shared is REGISTRY - there is
>>> >> ONE registry entry PER WINDOWS USER. If you want separate entries you
>> need to login as two different Windows Users.
>>> >>
>>> >> All in all, single installation and multiple databases is easier and
>> better setup.
>>> >>
>>> >> Best regards,
>>> >> Tomasz Janeczko
>>> >> amibroker.com
>>> >> ----- Original Message -----
>>> >> From: "Lester Vanhoff" <ebsn247lsm@>
>>> >> To: <amibroker@xxxxxxxxxxxxxxx>
>>> >> Sent: Tuesday, December 26, 2006 11:54 AM
>>> >> Subject: [amibroker] Which Folders Are Shared By Default Between
>> Multiple AB Installations
>>> >>
>>> >>
>>> >> >I have two AB installations on the same computer (one for Eod and one
>> for intraday). I have noticed that when I use the second
>>> >> >installation some folders in AA simply default to first
> installation's
>> path.
>>> >> >
>>> >> > This is not a bad thing as it allows keeping all formulas in one
>> place, but I'm not sure if it's by design or by coincidence
>>> >> > and
>>> >> > which folders are affected. Right after installing the second
>> instance of AB I copied all files from Formulas and Formats
>>> >> > folders
>>> >> > from the first to the second instalation so now it's difficult to
>> figure out what's shared by default and what's not.
>>> >> >
>>> >> > Tnx
>>> >> >
>>> >> >
>>> >> >
>>> >> >
>>> >> > Please note that this group is for discussion between users only.
>>> >> >
>>> >> > To get support from AmiBroker please send an e-mail directly to
>>> >> > SUPPORT {at} amibroker.com
>>> >> >
>>> >> > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
>>> >> > http://www.amibroker.com/devlog/
>>> >> >
>>> >> > For other support material please check also:
>>> >> > http://www.amibroker.com/support.html
>>> >> >
>>> >> > Yahoo! Groups Links
>>> >> >
>>> >> >
>>> >> >
>>> >> >
>>> >> >
>>> >>
>>> >
>>> >
>>> >
>>> >
>>> > Please note that this group is for discussion between users only.
>>> >
>>> > To get support from AmiBroker please send an e-mail directly to
>>> > SUPPORT {at} amibroker.com
>>> >
>>> > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
>>> > http://www.amibroker.com/devlog/
>>> >
>>> > For other support material please check also:
>>> > http://www.amibroker.com/support.html
>>> >
>>> > Yahoo! Groups Links
>>> >
>>> >
>>> >
>>> >
>>> >
>>>
>>
>>
>>
>>
>> Please note that this group is for discussion between users only.
>>
>> To get support from AmiBroker please send an e-mail directly to
>> SUPPORT {at} amibroker.com
>>
>> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
>> http://www.amibroker.com/devlog/
>>
>> For other support material please check also:
>> http://www.amibroker.com/support.html
>>
>> Yahoo! Groups Links
>>
>>
>>
>>
>>
>>
>> Please note that this group is for discussion between users only.
>>
>> To get support from AmiBroker please send an e-mail directly to
>> SUPPORT {at} amibroker.com
>>
>> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
>> http://www.amibroker.com/devlog/
>>
>> For other support material please check also:
>> http://www.amibroker.com/support.html
>>
>> Yahoo! Groups Links
>>
>>
>>
>>
>>
>
>
> Please note that this group is for discussion between users only.
>
> To get support from AmiBroker please send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> For other support material please check also:
> http://www.amibroker.com/support.html
>
> Yahoo! Groups Links
>
>
>
>
>
>
> Please note that this group is for discussion between users only.
>
> To get support from AmiBroker please send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> For other support material please check also:
> http://www.amibroker.com/support.html
>
> Yahoo! Groups Links
>
>
>
>
>
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