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Hello,
For that use static variables
http://www.amibroker.com/f?staticvarset
http://www.amibroker.com/f?staticvarget
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "Buzz M. Ross" <buzzmr@xxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Thursday, October 28, 2004 8:27 AM
Subject: [amibroker] Exploration - How to INITIALIZE variable for 1st stk ONLY, incr for 2nd+?
>
>
> I have a problem with using AFL that probably has a very simple
> solution, but has been eluding me. I've tried all kinds of 'work
> arounds', but to no avail. Here's the prob:
>
> I want to use a variable (NOT array) that gets initialized
> (say, 'm=0;') upon the first pass of 'exploration code' applied to
> the first symbol of a watchlist that, say, has 100 symbols. Then, as
> EACH additional symbol is tested with the exploration, the 'variable'
> should NOT BE RE-INITIALIZED, but rather, is to be incremented by
> one, such as: ' m = m + 1; '. This SHOULD be a very simple
> programming exercise, but with AFL, there is the problem that the
> variable 'm' gets re-initialized each time a new symbol's data
> is 'explored'. I've tried using 'StaticVarSet("m",0), but I can't
> get IT to work either. Here's the 'meta procedure' I'm trying to
> implement:
>
> 0. (AB selects first 'symbol' to be explored and makes it 'current'
> symbol),
>
> 1. Initialize a 'counter' variable at beginning of exploration run
> (such as 'm=0'),
>
> 2. Calculate conditions of exploration for 'current' symbol's data
> (AB puts True/False results in 'Filter' array),
>
> 3. Test 'Filter' array element(s) for condition being met, and
> if 'true', then
>
> a.) increment the 'counter' variable (m=m+1),
> b.) do other 'things',
> c.) [AB outputs 'counter' variable, m, (and other additional
> results) using 'AddColumn(m,"Count",4.0), and other AddColumn
> (.....)'s],
>
> 4. (AB tests for 'end of watchlist', and if 'true', terminates
> exploration run. If 'false', sets 'current' symbol to next symbol in
> list), and
>
> 5. Jumps back to step #2 to repeat the exploration process.
> -------
>
>
> When trying to 'initialize' the variable 'm' during ONLY the first
> symbol's exploration, in an 'IF (Status("stocknum")==0) {m=0};'
> statement, an error message occurs that says 'm' has to be
> initialized first [just below the 'm=m+1' statement], so this method
> of trying to initialize 'm' ONLY during the exploration of the first
> symbol triggers a compiler error.
>
> I think the solution uses the AFL 'StaticVarSet' and '...Get'
> functions, but I can't get these to work properly. I would very much
> appreciate some guidance to solve this problem. Some specific code
> examples would be quite helpful, as the 'manual' is NOT very clear
> about the use of the 'StaticVar....' functions, and I haven't been
> able to find any other 'variables'-related AFL functions that might
> apply.
>
> Thanks a bunch!!
>
> Buzz
>
>
>
>
>
>
>
> Check AmiBroker web page at:
> http://www.amibroker.com/
>
> Check group FAQ at: http://groups.yahoo.com/group/amibroker/files/groupfaq.html
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
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