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Jayson,
Yet again thank you for your assistance. The ".dll" appears to be no
longer available on the Equis/Metastock site.
Keith
--- In Metastockusers@xxxx, "Jayson" <jcasavant@xxxx> wrote:
> Keith,
>
> this used to be on the equis site....
>
> pds:=Input("Fast Limit",.0025,1,.25);
> pds1:=Input("Slow Limit",.0025,1,.25);
> ExtFml("MAMA.MAMA", (H+L)/2, pds,pds1)
>
>
> and the dll is attached
>
>
> Jayson
>
> -----Original Message-----
> From: Keith Newhouse [mailto:knewhous@x...]
> Sent: Friday, September 27, 2002 8:36 AM
> To: Metastockusers@xxxx
> Subject: [Metastockusers] Code for MAMA
>
>
> Hi Group,
>
> This is the EasyLanguage code for Ehlers MAMA. Does anyone have
the
> Metastock code for this which they would be prepared to share.
> Alternatively couls someone convert this code to MS?
>
> Regards,
>
> Keith
>
> MAMA EasyLanguage Code
> Inputs: Price((H+L)/2),
> FastLimit(.5),
> SlowLimit(.05);
>
> Vars: Smooth(0),
> Detrender(0),
> I1(0),
> Q1(0),
> jI(0),
> jQ(0),
> I2(0),
> Q2(0),
> Re(0),
> Im(0),
> Period(0),
> SmoothPeriod(0),
> Phase(0),
> DeltaPhase(0),
> alpha(0),
> MAMA(0),
> FAMA(0);
>
> If CurrentBar > 5 then begin
> Smooth = (4*Price + 3*Price[1] + 2*Price[2] + Price[3]) / 10;
>
> Detrender = (.0962*Smooth + .5769*Smooth[2] - .5769*Smooth
> [4] - .0962*Smooth[6])*(.075*Period[1] + .54);
>
> {Compute InPhase and Quadrature components}
> Q1 = (.0962*Detrender + .5769*Detrender[2] - .5769*Detrender
> [4] - .0962*Detrender[6])*(.075*Period[1] + .54);
> I1 = Detrender[3];
>
> {Advance the phase of I1 and Q1 by 90 degrees}
> jI = (.0962*I1 + .5769*I1[2] - .5769*I1[4] - .0962*I1[6])*
> (.075*Period[1] + .54);
> jQ = (.0962*Q1 + .5769*Q1[2] - .5769*Q1[4] - .0962*Q1[6])*
> (.075*Period[1] + .54);
>
> {Phasor addition for 3 bar averaging)}
> I2 = I1 - jQ;
> Q2 = Q1 + jI;
>
> {Smooth the I and Q components before applying the
> discriminator}
> I2 = .2*I2 + .8*I2[1];
> Q2 = .2*Q2 + .8*Q2[1];
>
> {Homodyne Discriminator}
> Re = I2*I2[1] + Q2*Q2[1];
> Im = I2*Q2[1] - Q2*I2[1];
> Re = .2*Re + .8*Re[1];
> Im = .2*Im + .8*Im[1];
> If Im <> 0 and Re <> 0 then Period = 360/ArcTangent(Im/Re);
> If Period > 1.5*Period[1] then Period = 1.5*Period[1];
> If Period < .67*Period[1] then Period = .67*Period[1];
> If Period < 6 then Period = 6;
> If Period > 50 then Period = 50;
> Period = .2*Period + .8*Period[1];
> SmoothPeriod = .33*Period + .67*SmoothPeriod[1];
>
> If I1 <> 0 then Phase = (ArcTangent(Q1 / I1));
> DeltaPhase = Phase[1] - Phase;
> If DeltaPhase < 1 then DeltaPhase = 1;
> alpha = FastLimit / DeltaPhase;
> If alpha < SlowLimit then alpha = SlowLimit;
> MAMA = alpha*Price + (1 - alpha)*MAMA[1];
> FAMA = .5*alpha*MAMA + (1 - .5*alpha)*FAMA[1];
>
> Plot1(MAMA, "MAMA");
> Plot2(FAMA, "FAMA");
>
> End;
>
>
>
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