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Hi,
Thank you for your e-mail and trying AmiBroker!
As for AFL formulas:
There are 3 kinds of them:
a) custom indicators (they contain graph0, graph1... variable assignenents)
b) commentaries (they contain WriteVal, WriteIf function calls)
c) trading systems (the contain buy/sell variable assignments).
I use also the following naming convention:
Name_i.afl - indicator ( _i suffix )
Name_c.afl - commentary ( _c suffix )
Name_s.afl - trading system ( _s suffix )
For an example of the trading system you can
take a look at KST_s.afl file supplied with AmiBroker installation.
Just go to the Analysis->Automatic Analysis window
Click "Load" button, browse to "C:\Program Files\AmiBroker\AFL" folder
and choose "KST_s.afl" file and click "Open".
The following code will be loaded:
/*MARTIN PRING'S KST MOMENTUM SYSTEM FOR
SHORT TERM TRADING USING DAILY DATA.
PROGRAMMED BY CARLTON McEACHERN
carlton.mceachern@xxxx
MAY 19, 2000*/
KST = (MA(ROC(CLOSE,10),10) * 1) +
(MA(ROC(CLOSE,15),10) * 2) +
(MA(ROC(CLOSE,20),10) * 3) +
(MA(ROC(CLOSE,30),15) * 4);
BUY = CROSS(KST , MA(KST, 109));
SELL = CROSS(MA(KST , 120) , KST);
The last two lines define required BUY/SELL variables.
Simply said AmiBroker needs to know when a buy and sell
signals are generated by your system in order to
perform a back-test.
Hope it helps,
Best regards,
Tomasz Janeczko
===============
AmiBroker - the comprehensive share manager.
http://www.amibroker.com
----- Original Message -----
From: <jhlaufer@xxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Thursday, March 15, 2001 8:47 PM
Subject: [amibroker] Newbie Automatic Analysis Question
> I've just downloaded Amibroker and was taking a look its Automatic
> Analysis feature. It looks like this is fairly powerful--along the
> lines of AIQ, etc., but I am unable to test any scans. Any attempt to
> scan either all stocks or the current stock using any of the sample
> AFL files results in the error message: "Missing buy/sell variable
> assignments".
>
> Where/how do I enter buy/sell variable assignments or otherwise solve
> this error?
>
> Thanks.
>
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
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