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I have prepared a special script for ASX that
REMOVES all tickers that have the length > 3.
By default it scans the database and finally gives
you the number of such tickers and ask if you want to delete them ALL or not.
It can be modifed however to ask for EVERY SINGLE ticker
- just change AskUser = false line to:
AskUser = true;
No need to work manually :-) Just run AmiBroekr and double click on the script.
Best regards,
Tomasz Janeczko
===============
AmiBroker - the comprehensive share manager.
http://www.amibroker.com
----- Original Message -----
From: "rbf" <rbf@xxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Wednesday, July 25, 2001 3:35 AM
Subject: [amibroker] Deleting Option tickers from the data base
>
>
> > > Q2] My ascii files contain hundreds of six-letter tickers denoting
> > > stock options. How do I prevent them from entering the data base at
> > > all ?
>
> > Currently there is no easy way to prevent them from being imported
> > IF they are all in single ASCII file.
> > You can create a scan like this:
> > buy = name()==6;
> > and move the results to a separate group so you can omit these
> > tickers during back-testing.
> >
> > Best regards,
> > Tomasz Janeczko
>
> Hello Tomasz
>
> I'll pre-process the daily data file to eliminate all tickers of length > 3
> (after renaming CMLC to CM2 and renaming CMLDA to CM1). That will fix 'the
> problem' for future data .
> (we're talking about a thousand+ bits of rubbish (Options & Warrants
> tickers) whose numbers grow 'daily' unless I stop it from doing so !)
>
> Using your scan idea (as corrected :-) ) how do you
> Q1] MOVE the results from the scan list into a Group (say Group 200, rather
> than a Watch List) in 'one operation' ? and then
> Q2] DELETE from the database all the stocks in that Group in 'one operation'
> ?
> - given the disk space these unwanted files take up it is better to delete
> them rather than just omit them when back-testing.
>
> Best Regards
>
> Fred Browne
>
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
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