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seems a complex way of doing things
try this
RangeTest = Optimize("RangeTest", 1, 1, 4, 1);
array = c;
Range = iif( array >1.3, 4, iif( array >1.2, 3, iif( array >1.1, 2,
iif( array >0, 1, 0 ))));
buy = range==rangetest;
sell=0;
applystop( stopTypeNBar, stopModeBars, 6, 0 );
this line > Sell = BarsSince(Buy) > 6; will not work very well because
buy can occur on consecutive bars and will re-initiate the barssince.
You need to add in exremspan statement to remove buy signals for the
n-bar period
--
Cheers
Graham Kav
AFL Writing Service
http://www.aflwriting.com
Range1 = Array > 0 AND Array <= 1.1000;
> Range2 = Array > 1.1000 AND Array <= 1.2000;
> Range3 = Array > 1.2000 AND Array <= 1.3000;
> Range4 = Array > 1.3000;
2009/1/17 ozzyapeman <zoopfree@xxxxxxxxxxx>:
> Hello, hoping someone can point out the general flaw in logic here. Even
> though I've been working with AFL for six months now, array vs scalars can
> still be confusing. All I'm trying to do is pass an array to a function that
> tests it's range. The program then sets a Buy according to that range. An
> optimization is performed to find the "best" range for a given period.
>
> Of course this is not my actual trading system, but merely a test of concept
> for much a more complicated function.
>
> By definition, the Close price has to fall into one of the four ranges
> defined in the function. I am using Forex, but any symbol will do, and would
> fall into one of the four ranges. Therefore, running the Optimization should
> generate some trades, as the Buy condition will be true eventually, as we
> cycle through the "RangeTest" variable for each bar. But no trades are
> generated.
>
> Traces indicate that the Close array is not being cycled through.
>
> Shouldn't the following code work, without having to get into a Barcount
> loop? If not, where is the flaw? Any help much appreciated.
>
>
> RangeTest = Optimize("RangeTest", 1, 1, 4, 1);
>
>
> function RangeFind(Array)
> {
> ActualRange = 0;
>
> Range1 = Array > 0 AND Array <= 1.1000;
> Range2 = Array > 1.1000 AND Array <= 1.2000;
> Range3 = Array > 1.2000 AND Array <= 1.3000;
> Range4 = Array > 1.3000;
>
> for( n = 1; n <=4; n++)
> {
>
> RangeN = VarGet( "Range"+ NumToStr(n, 1.0,0) );
>
> if (RangeN) ActualRange = n;
>
> }
>
> return ActualRange;
> }
>
>
> Buy = RangeFind(Close) == RangeTest;
>
> Sell = BarsSince(Buy) > 6;
>
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