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RE: [amibroker] Re: AFL question.....for use in backtester



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What you hace described would be a resistance trend line between Peaks
(highs), is this correect in which case the price would already be below the
line.
I will assume it is a support line anyway and the close of the next day
would cross below the line
If you have the slope of the line as $/bar then your cross would be
M = slope of line in $/bar
N = BarsSince( CondP) ; //number of bars since the last reference point of
the trend line 
P = Valuewhen(CondP,H ); //your last price that you are using as reference
for the trend line, I have inserted the high in here for convenience
X = M*N + P;
Sell = Cross(X,C);

Hope this helps a bit and I am not off at a tangent too far

Cheers,
Graham
http://groups.msn.com/ASXShareTrading
http://groups.msn.com/FMSAustralia


-----Original Message-----
From: epintoem [mailto:epintoem@xxxxxxxxx] 
Sent: Tuesday, 9 September 2003 8:14 PM
To: amibroker@xxxxxxxxxxxxxxx
Subject: [amibroker] Re: AFL question.....for use in backtester


I want to use the trend lines for stops

I can calculate the value of the trend line for the next day and a 
cross would provide the exit.

Hope that helps

--- In amibroker@xxxxxxxxxxxxxxx, "Graham" <gkavanagh@xxxx> wrote:
> It depends on what your actual buy/sell signals are, can you
provide them.
> What you have below defines an exploration basis for certain
conditions to
> be met, but what will the trade signals be.
> 
> Cheers,
> Graham
> http://groups.msn.com/ASXShareTrading
> http://groups.msn.com/FMSAustralia
> 
> 
> -----Original Message-----
> From: epintoem [mailto:epintoem@x...]
> Sent: Tuesday, 9 September 2003 7:41 PM
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: [amibroker] AFL question.....for use in backtester
> 
> 
> I have the AFL code that automatically draws trend lines but I cant
> use it in Backtester. Anyone with a work around?
> 
> 
> 
> condP=Ref(H,-1)>=Ref(H,-2) AND Ref(H,-1)>H AND Ref(H,-1)>Ref(C,-3);
> 
> The above condition defines a peak.
> 
> In order to draw a trend line I need 4 values
> 
> first Peak= value when condP is met
> 
> second peak= value when condp is met and High greater than first
peak.
> 
> bar1= number of bars between peaks
> 
> bar2= number of bars since first peak.
> 
> Using last value restricts the finding to the last occurrence which
> then does not allow to back test?
> 
> TIA
> 
> 
> 
> 
> 
> 
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