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Sorry that I missed your previous statement that "I do not use the all
stocks option as there are many, many stocks there that I would not
even consider trading... including stocks under $5"
How do you 'filter' stocks under $5 without having to go thru the
entire QP2 database?
Phsst
--- In amibroker@xxxxxxxxxxxxxxx, "Jayson" <jcasavant@xxxx> wrote:
> Psst,
> I do not use the all stocks option as there are many, many stocks
there that
> I would not even consider trading. For instance the qp database has over
> 2200 stocks under $5, almost 600 less than a dollar. Instead I
filter a list
> that meets my trading universe criteria. I suppose there are pro's
and cons
> to both approaches. Using the enable local storage option will speed
things
> a bit but Tomasz has made the QP plug in pretty fast.
>
> Jayson
> -----Original Message-----
> From: phsst [mailto:phsst@x...]
> Sent: Thursday, April 24, 2003 10:56 PM
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: [amibroker] Jayson (or TJ) QP2 database efficiency
>
>
> Jayson,
>
> You made a post earlier today that did not register for a few hours,
> so I apologize for not linking into the original thread.
>
> I believe that you posted that it only takes you a couple minutes to
> ripple thru your QP2 database to create new indexes.
>
> Here is my question:
>
> I link directly to my QP2 database rather than using QP2 to update the
> native AB database.
>
> Then, using the 'Groups / All Stocks' option to backtest or explore
> against the entire QP2 database, it usually takes about 8 minutes per
> backtest or explore on my 1.7 ghz system.
>
> Am I using the system in the most efficient way? Or should I specify
> the 'local database' option and let the system spend a few minutes
> each day to update a native AB database from my QP2 database in order
> to speed up things on all subsequent backtests an explores?
>
> Thanks in advance,
>
> Phsst
>
>
>
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