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Graham
I don't think it's just a case of finding the null symbols. It's been a
while since I played with this but I remember that after performing a series
of adds, deletes, inserts, renames via MS tools on MS files the
corresponding AB database could have problems after Retrieve (not just empty
symbols). At the time I did log a call with AB support - I cannot find
details just now but will have a look on my older machines later.
John
----- Original Message -----
From: "Graham" <kavemanperth@xxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Saturday, December 10, 2005 10:24 PM
Subject: Re: [amibroker] Re: Data not updated
> You do not need to wipe th AB database.
> I actually use my weekly sort of symbols into their groups
> (equity/derivative/index etc) to find the null symbols. The AFL
> function CategoryAddSymbol does not move symbols that have no data, so
> by starting all in Group0 what is left behind are the null symbols.
> These can then be deleted in AB.
>
> --
> Cheers
> Graham
> AB-Write >< Professional AFL Writing Service
> Yes, I write AFL code to your requirements
> http://e-wire.net.au/~eb_kavan/ab_write.htm
>
>
> On 12/10/05, John R <jr-ta@xxxxxxxxxxxxxxxxx> wrote:
> > Just a note of caution - in my experience you need to be careful when
using
> > MS Plugin and doing database maint on the MS files (adds, renames,
deletes
> > etc.). AB does not sync dataabse with MS directories so even with a
Retrieve
> > you can end up with database problems, incoreect/dead links etc. Only
safe
> > solution I have found is to effectively wipe the AB database before
doing a
> > Retrieve.
> >
> > The MS Plugin also used to truncate the MS symbol names - not sure if it
> > still does as I now use alternative method to get full symbol names into
AB.
> >
> > John
> >
> > Original Message -----
> > From: "Glenn" <glennokb@xxxxxxxxxxxx>
> > To: <amibroker@xxxxxxxxxxxxxxx>
> > Sent: Saturday, December 10, 2005 2:15 AM
> > Subject: [amibroker] Re: Data not updated
> >
> >
> > > Thanks Richard,
> > >
> > > I've just done what Graham suggested as I'm using the Metastock plug-
> > > in.
> > >
> > > I had already retrieved the symbols as you mentioned before I asked
> > > about this and as you say, it would be nice if it was automatic to
> > > retrieve new symbols.
> > >
> > > I remember when I first started using Amibroker (couple of years ago
> > > now), I thought it was strange that this was not automatic. It's just
> > > a click, but would be good to have an option to automatically retrieve
> > > on startup.
> > >
> > > Cheers, Glenn
> > >
> > >
> > >
> > > --- In amibroker@xxxxxxxxxxxxxxx, "Richard Dale" <richard@xxxx> wrote:
> > > >
> > > > Glen,
> > > >
> > > > If there are any symbol changes (due to new listings, delistings and
> > > code
> > > > changes) in the Metastock data format, Amibroker needs to be told to
> > > > retrieve the symbols again. You should periodically click the
> > > Retrieve
> > > > Symbols button inside the File -> Database Settings configuration.
> > > >
> > > > It'd be great if Amibroker would periodically do this (perhaps upon
> > > opening
> > > > of the database) as it only takes half a second or so on my PC even
> > > with
> > > > lots of data folders. In fact, I'll send this in as an improvement
> > > request
> > > > on the Amibroker web site.
> > > >
> > > > Best regards,
> > > > Richard Dale.
> > > > Norgate Investor Services
> > > > - Premium quality Stock, Futures and Foreign Exchange Data for
> > > > markets in Australia, Asia, Canada, Europe, UK & USA -
> > > > www.premiumdata.net <http://www.premiumdata.net/>
> > > >
> > > >
> > > >
> > > > _____
> > > >
> > > > From: Glenn [mailto:glennokb@x...]
> > > > Sent: Saturday, 10 December 2005 8:40 AM
> > > > To: amibroker@xxxxxxxxxxxxxxx
> > > > Subject: [amibroker] Data not updated
> > > >
> > > >
> > > > Hi,
> > > >
> > > > I have a stock that is merging with another. The first stock ABC is
> > > > worth approx $13 and the second XYZ is approx $4. I will get 4.234
> > > XYZ
> > > > shares for one of the ABC shares.
> > > >
> > > > What I have done is addtocomposite ABC divided by 4.234, then
> > > renamed
> > > > it to XYZ.
> > > >
> > > > Now I have downloaded data for XYZ but it is not being updated on
> > > the
> > > > XYZ symbol in Amibroker. If I look at XYZ under Metastock I can see
> > > > it. I use Metastock data source in Amibroker.
> > > >
> > > > Any idea why the stock isn't updating?
> > > >
> > > > Thanks Glenn
> > > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > 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 other support material please check also:
> > > http://www.amibroker.com/support.html
> > >
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> > To get support from AmiBroker please send an e-mail directly to
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> >
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>
> Please note that this group is for discussion between users only.
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> To get support from AmiBroker please send an e-mail directly to
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