Re: RE: RE: [amibroker] Scan and Settings

Sat, 30 Sep 2006 00:47:16 -0700

Just a thought ... in case you are not already doing it this way ... should be using "common stocks" as your source of data - not "All Symbols".  ETFs for example sometimes have secor / industry info, sometimes not ... and they behave differently when I compute Rel Stregth (last bar is always a spike caused by Industry). Just saw it today, so have not looked into in detail.
 
Also there should be no limit to length of time for ATCs.
----- Original Message -----
Sent: Friday, September 29, 2006 11:33 PM
Subject: Re: RE: RE: [amibroker] Scan and Settings

Thank you Paul,Terry and Joe,
 
I have been having a bear of a time calculating accurate sectors and industries in Amibroker.I dont know if its the data or the complexity of Ami..I will read up on scan and try to understand why the date range in settings has no impact on the Scan period.
 
Is there an AMI rule of thumb as to how far back in time one should go when using ATC to create sectors and Industries??? I have yet to successfully create a full sector/industry database with QP data that didnt have a significant number of spikes or negative volume
 
Allan

----- Original Message -----
From: Paul Ho <[EMAIL PROTECTED]>
Date: Friday, September 29, 2006 9:46 pm
Subject: RE: RE: [amibroker] Scan and Settings
To: [email protected]

> You can limit the date range only by using AFL statements like
>
> Dn = datenum() >= xxxxxxxx
>
> Addtocomposite(iif(Dn, realvalue, NULL), ticker, "field";
>
> That should do it.
>
> Paul.
>
> _____
>
> From: [email protected]
> [mailto:[EMAIL PROTECTED] On Behalf
> Of [EMAIL PROTECTED]
> Sent: Saturday, 30 September 2006 8:51 AM
> To: [email protected]
> Subject: Re: RE: [amibroker] Scan and Settings
>
>
>
> Hi Terry,
>
> No matter what I do,my composites are set to the full history
> which is apx
> 10 years
>
>
>
> Allan
>
> ---
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