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Momentum [usually]needs a Ref(C,-per).
Your Ref(C,period) looks into the future, since period is positive.
Dimitris Tsokakis
--- In amibroker@xxxxxxxxxxxxxxx, "jfk_92" <jfk_92@xxxx> wrote:
> I have the following code for the "phase Change indicator" appeared
> on May TASC. I can't have the indicator PCI plotted. Any
suggestion?
> Thanks
>
> Jim
>
> ==================================
> Period=Param("Period", 35,3,200);
>
> Momentum=(C-Ref(C,period))/(period-1);
> PCI=0;
> DUP=0;
> DDOWN=0;
>
> for (i=Period-1;i<=BarCount-1;i++)
> {
> DUP[i]=0;
> DDOWN[i]=0;
> for (j=i;j<=i-period+1;j--)
> {
> T=C[i-period+1]+(j-i+period-1)*Momentum[i];
> if(C[j]>T)
> DUP[i]=DUP[i]+C[j]-T;
> if(C[j]<T)
> DDOWN[i]=DDOWN[i]+T-C[j];
> }
> PCI[i]=DUP[i]/(DUP[i]+DDOWN[i])*100;
> }
>
> Plot(C,"C",colorBlack,styleCandle|styleOwnScale);
> Plot(PCI,"PCI",colorBlue,styleThick);
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