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Glen,
Volume field is an integer than can hold maximum number of: 2^31.
Your code causes overflow and that's why you get invalid results.
Use OHLC fields instead for such large numbers:
TotalTurnover = V * C;
AddToComposite(TotalTurnover,"~Turnover","X");
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "Glenn" <glennokb@xxxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Saturday, January 24, 2004 1:38 AM
Subject: [amibroker] Negative composite value?
> Hi,
>
> I have a database of about 1400 stocks and when I run an
> Addtocomposite ie:
>
> TotalTurnover = V * C;
> AddToComposite(TotalTurnover,"~Turnover","V");
>
> I'm getting some large negative numbers.
>
> If I run an "Explore" using:
>
> TotalTurnover = V * C;
> AddColumn(TotalTurnover,"TotalTurnover",1.3);
> Filter=1;
>
> ...on the same database and set the range to the same date with
> negative turnover.
>
> I exported this to Excel and sum() the turnover, the
> result is definately not negative.
>
> Thanks for any help.
>
> Cheers Glenn
>
>
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