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----- Original Message ----- From: "Owen Davies" To: <metastock@xxxxxxxxxxxxx> Sent: zaterdag 13 mei 2000 17:21 Subject: Re: Relative Momentum Index > Ton Maas wrote: > > The closest I can find is "double smoothing the standard RSI" > {Relative Momentum Index} > Mov(Mov(RSI(14),5,S),5,S) > {or use 2 or 3 for last period's smoothing} Thanks for trying, but I don't think this is it. In the RMI(A, B), the A appears to be a period variable equivalent to the period of the RSI. The B is a momentum variable. It's something like RSI(C - Ref(C, -B), A). However, there is some smoothing going on as well, and I can't tell how that is done, unless it's the Wilder's smoothing described farther down in the original reply. That competing program from Miami allows us to do this: RSI(C - C[N], K), where K is the period of the RSI and [N] is equivalent to the Ref time variable. It produces an indicator that follows pretty much the same patterns as the Metastock formulation of the RMI, but is extremely jagged by comparison. I don't know whether or not it incorporates Wilder's smoothing. Will try rewriting the function from the ground up, including Wilder's smoothing and see whether it makes a difference. Thanks again. Owen Daviess Re: Relative Momentum Index · To: "Metastock-List" <metastock@xxxxxxxxxxxxx> · Subject: Re: Relative Momentum Index · From: "A.J. Maas" <anthmaas@xxxxxxxxx> · Date: Sun, 14 May 2000 02:43:46 +0200 · Organization: Ms-IRB · References: <000801bfbb39$b282a6a0$7160a4c1@xxxxx> · Reply-To: metastock@xxxxxxxxxxxxx · Sender: owner-metastock@xxxxxxxxxxxxx Note that the build-in Equis' Momentum-custom formula is 'dividing' written as follows (C/Ref(C,-12))*100 whereas your Momentum is 'substracting' written (C-Ref(C,-12))*100 both referencing to the same earlier date and where for both too the multiplying by 100 factor is only added, since that it is used for Y-scale plotting only and not for/of real true value for the prime contents of the formulas. Then based on the Equis' RSI-custom formula printed in previous mail, and on the above Momentum-custom formula, find below the RMI (note: in the way that you have described it and below is not the same RMI version as the MSK buid-in version). |
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Relative Momentum Index Q:=Input("RSI Time Periods",1,1000,14); M:=Input("Momentum Time Periods",1,1000,5); B:=Input("Field: 1=Close, 2=Open, 3=High, 4=Low, 5=Volume",1,5,1); Bval:=If(B=1,C,If(B=2,O,If(B=3,H,If(B=4,L,V)))); Mom:=Bval-Ref(Bval,-M); Z:=Wilders(If(ROC(Mom,1,$)>0, ROC(Mom,1,$),0),LastValue(Q)); Y:=Wilders(If(ROC(Mom,1,$)<0, Abs(ROC(Mom,1,$)),0),LastValue(Q)); RMS:=Z/Y; RMIcust:=100-(100/(1+RMS)); Mov(RMIcust,M,S) |
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