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Buy = Cross( MACD(), Signal());
Short=Cross(Signal(),MACD());
Long = Flip(Buy,Short);
Days = IIf(Long,BarsSince(Buy),BarsSince(Short));
Plot(C,"",colorBlack,styleCandle);
PlotShapes(Buy*shapeUpArrow,colorGreen);
PlotShapes(Short*shapeDownArrow,colorRed);
Title=Name()+ WriteIf(Long," BarsSinceBuy [ "+WriteVal(Days,1)+ "]","BarssinceShort ["+WriteVal(Days,1)+ "]");
----- Original Message -----
From: Owen Davies
To: amibroker@xxxxxxxxxxxxxxx
Sent: Sunday, October 31, 2004 8:31 PM
Subject: Re: [amibroker] Bars since Buy signal - how to code in AFL ?
Paul Chivers wrote:
>Here's a shorter version without the loops.
>
>
>Buy = Cross( MACD(), Signal());
>Sell=Cross(Signal(),MACD());
>
>Long = Flip(Buy,Sell);
>
>Days = IIf(Long,BarsSince(Cross(Long,0.5)),0);
>
Hmmm. Can I do this?
Buy=BuyCondition;
Sell=SellCondtion;
Short=ShortCondition;
Cover=CoverCondition;
Long=Flip(Buy,Sell);
Shrt=Flip(Short,Cover);
Darn! That presupposes that I already have the Sell and Cover
conditions. I can't see how to use this for an exit condition like this:
Sell=Days > N AND ExitCondition;
Am I missing something?
I am deeply grateful for your help.
Owen
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