Re: [amibroker] ATC question

["Tomasz Janeczko" <groups@xxxxxxxxxxxxx>]

Hello,

The plot may change if the currently selected symbol
has data holes or history length different than composite.

See the COMMENT to the docs on Foreign funciton
http://www.amibroker.com/f?foreign
for more details

Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message ----- 
From: "dallen2507" <dallen1@xxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Sunday, July 06, 2008 4:28 AM
Subject: [amibroker] ATC question


> TJ
> I want to take the family average of a watchlist and then plot the 
> family average and explore the results. I'm using the following AFL.
> 
> // Hedge_Only.afl
> 
> // 1. (Task == 1)  In AA point to Watchlist to Hedge and Scan with n 
> = 1 
> // 2. (Task == 2)  Set to current symbol for plot and explore
> 
> Task = Param("Task",1,1,2,1); 
> 
> if(Task == 1) // point to watchlist for fam average to hedge, set 
> range n = 1, and Scan
> {
> Buy = 1; Sell = Short = Cover = 0;// need for scan
> Change = ROC(C,1)/100;
> AddToComposite(Change,"~Change","X");
> AddToComposite(1 , "~Counter","X"); // No of Stks
> } // end of Task == 1
> 
> if(Task == 2) // Hedge and Plot and Explore
> {
> FamChange = Foreign("~Change","X");
> NoStks = Foreign("~Counter","X");
> NoStks = IIf(NoStks > 0,NoStks,1);
> AvgChange = FamChange/NoStks ;
> CumSum =Cum(log(AvgChange + 1));
> FamAvgL = exp(CumSum); // fam avg of long watchlist for hedging
> 
> Plot(FamAvgL, "BH FamAvg",colorBlack,styleLine|styleThick );
> 
> Filter = 1;
> AddColumn(FamAvgL,"BH ");
> 
> } // end of Task == 2
> 
> After scanning the watchlist using task == 1, I switch to Task == 2
> and explore.
> The problem is the plot changes when I change the current symbol.
> WHY?
> How am I suppose to do this?
> Dan
> 
> 
> 
> ------------------------------------
> 
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> 
> To get support from AmiBroker please send an e-mail directly to 
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> 
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
> 
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> http://www.amibroker.com/support.html
> Yahoo! Groups Links
> 
> 
> 

------------------------------------

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