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Don't think you can use Ref here, try using subscript operator,
something like
xxx=LastValue(BarIndex());
if (abs(InPhase[xxx] + InPhase[xxx-1]))
Johan
--- In amibroker@xxxxxxxxxxxxxxx, "Ara Kaloustian" <ara1@xxxx> wrote:
> The code below gives me an error of:
> Error 3.
> Condition in IF, WHILE, FOR statements
> has to be Numeric or Boolean type
>
> Problem area highlighted below.
>
> Anyone see the problem?
>
> Thanks
>
> Ara
>
> PS: Does anyone have this code already (John Ehler's Trendline).
Trying to convert from Trade Station
>
>
> //File: DEV - Ehler Trendline
>
> Price =(H+L)/2;
>
> Imult =0.635;
>
> Qmult =0.338;
>
> InPhase =0;
>
> Quadrature =0;
>
> Phase =0;
>
> DeltaPhase =0;
>
> count =0;
>
> InstPeriod =0;
>
> Period =0;
>
> Trendline =0;
>
>
>
> if (LastValue(BarIndex()) > 5)
>
> //Detrend Price
>
> {Value3 = Price - Ref(Price,-7);}
>
>
>
> //Compute InPhase AND Quadrature components
>
> Inphase = 1.25*(Ref(Value3,-4) - Imult*Ref(Value3,-2)) + Imult*Ref
(InPhase,-3);
>
> Quadrature = Ref(Value3,-2) - Qmult*Value3 + Qmult*Ref(Quadrature,-
2);
>
> //Use ArcTangent to compute the current phase
>
> LastInPhase = LastValue(InPhase);
>
> if (abs(LastInPhase + Ref(LastInPhase,-1))) //
<==== Problem in Ref(LastInPhase,-1)
>
> {
>
> //Phase = atan(abs((Quadrature+Ref(Quadrature,-1)) / (InPhase+Ref
(InPhase,-1))));
>
> a=0;
>
> }
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