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1 minute data for normal equity market would use approx 100,000 bars per
year (~400,000 for forex)
This would not allow much history to reach limit and make it very slow
running.
--
Cheers
Graham
AB-Write >< Professional AFL Writing Service
Yes, I write AFL code to your requirements
http://www.aflwriting.com
On 28/12/06, Terry <MagicTH@xxxxxxxxxxx> wrote:
>
> 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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Version: 7.5.432 / Virus Database: 268.15.28/605 - Release Date: 12/27/2006 12:21 PM
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