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While Thomas's approach is better, (in case you need same type of
comparison in the future) your original code would work if you have
subsitituded "< -0.03" with "< 0.97" and "> 0.03" with ">1.03"
ie:
> Buy = BuySignal < 0.97;
> Sell = SellSignal > 1.03;
Cheers
Umit
--- In amibroker@xxxxxxxxxxxxxxx, "chugunok" <chugunok@xxx> wrote:
>
> Hi Folks,
> I am learning AFL, and tried to implement a simple strategy:
> Buy when price drops 3% below yesterday's close
> Sell when it is 3% above the purchase price
>
> Here is the code:
>
> BuySignal = ( Close - Ref(Close, -1) ) / Close;
> SellSignal = (Close-BuyPrice) / Close;
> Buy = BuySignal < -0.03;
> Sell = SellSignal > 0.03;
>
> When I run it in scan I only get Buy signals, no sell signals. I
> assume there is a problem with the logic, but I cannot see it...
> I would appreciate a helping hand :-)
> Thanks, Paul C.
>
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