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Bill, Onno,
Metastock uses a wilders smoothing not a simple moving average. While not
correct you can use this, it does yield the same ouput as the Metastock RSI.
A:=Input("RSI periods",2,50,14);
B:=C; {RSI target array}
U:=If(B>Ref(B,-1),B-Ref(B,-1),0);
D:=If((B<Ref(B,-1) OR (B=Ref(B,-1))),Ref(B,-1)-B,0);
UE:=Wilders(U,A);
DE:=Wilders(D,A);
100-(100/(1+(UE/DE)));
J.
>From: "billhebert" <billhebert@xxxxxxxxxxx>
>Reply-To: metastock@xxxxxxxxxxxxx
>To: <metastock@xxxxxxxxxxxxx>
>CC: <o.goedknegt@xxxxxxxxx>, <rlarsen@xxxxxxxxxxxxxx>
>Subject: Re: Different RSI in MetaStock ?
>Date: Sun, 20 Jan 2002 12:45:28 -0800
>
>Onno,
>
>I have tested the following code and I beleive it will fix your RSI problem
>
>- Bill Hebert
>
>---------------------------------------------------------------------------
>
>A:=Input("RSI periods",2,50,14);
>B:=C; {RSI target array}
>U:=If(B>Ref(B,-1),B-Ref(B,-1),0);
>D:=If((B<Ref(B,-1) OR (B=Ref(B,-1))),Ref(B,-1)-B,0);
>UE:=Mov(U,A,S);
>DE:=Mov(D,A,S);
>100-(100/(1+(UE/DE)));
>
>----------------------------------------------------------------------------
>
>
>----- Original Message -----
>From: "onno goedknegt" <o.goedknegt@xxxxxxxxx>
>To: <pdmanager@xxxxxxxxxxxxxxxxx>
>Cc: <metastock@xxxxxxxxxxxxx>
>Sent: Thursday, December 20, 2001 11:42 AM
>Subject: Different RSI in MetaStock ?
>
>
> > Dear Sirs,
> >
> > It looks like other MetaStock users noticed the following fact:
> >
> > It seems that the calculation for RSI in MetaStock differs from the
> > standard RSI calculation.
> >
> > I'm trying to "translate" my MetaStock trading system into an Excel
> > sheet.
> > And because my MetaStock trading system contains RSI, I need
> > to "translate" the RSI calculation into Excel.
> >
> > Attached Excel sheet contains my RSI calculation (sheet: calc 1).
> > Other calculations downloaded from the Internet give the same values
> > for RSI as my calculation (sheet: calc 2).
> >
> > MetaStock RSI values are shown in red.
> >
> > 1. Which version is correct ?
> > 2. How does MetaStock calculate their RSI ?
> > 3. Can you give the exact formula how MetaStock's RSI is calculated?
> >
> > Kind regards,
> > Onno
> >
>
>
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