Variable moving average
Printed From: BullCharts Forum
Category: BullCharts
Forum Name: BullScript
Forum Discription: Technical discussion related specifically to the BullScript programming language.
URL: http://www.bullcharts.com.au/forum/forum_posts.asp?TID=553
Printed Date: 03 Apr 2025 at 2:20pm
Software Version: Web Wiz Forums 9.69 - http://www.webwizforums.com
Topic: Variable moving average
Posted By: jalna
Subject: Variable moving average
Date Posted: 26 Mar 2009 at 10:51am
Can anyone write the code for this MA by Tushar Chande
This is the
MetaStock code for VIDYA 21,5 which applies to the article "Breaking Out Of
Price Channels" by Gerald Marisch in the TASC January 1998
edition.
Length:=Input("Length",1,200,21);
Smooth:=Input("Smoothing",1,200,5);
AbsCMO:=(Abs(CMO(C,Length)))/100;
SC:=2/(Smooth+1);
VIDYA:=If(Cum(1)<=(Length+1),C,(SC*AbsCMO*CLOSE)+(1-(SC*AbsCMO))*PREV);
VIDYA
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Replies:
Posted By: maximo
Date Posted: 27 Mar 2009 at 1:59am
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Sure Jalna,
[Description ="Tushar Chande's variable-length moving average (VIDYA)"]
[target =price; color=Magenta; width=2]
Length:= Input("Length",21,1);
Smooth:= Input("Smoothing",5,0);
AbsCMO:=( Abs(CMO(C,Length)))/100;
SC:=2/(Smooth+1);
VIDYA:= If(Cum(1)<=(Length+1),C,(SC*AbsCMO*CLOSE)+(1-(SC*AbsCMO))*PREV);
VIDYA
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Posted By: jalna
Date Posted: 27 Mar 2009 at 7:31am
Thanks Maximo yet again. What would we all do without you ?
I noticed in the formula that you have left out 200 in the first 2 lines. Was this not needed for the BC formula ?
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Posted By: maximo
Date Posted: 27 Mar 2009 at 12:41pm
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My guess is the 200 is a maximum value for the indicator and 1 would be the minimum. No need to put limits on our settings :P
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Posted By: maximo
Date Posted: 27 Mar 2009 at 1:12pm
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I did a study of the CMO, Chande Momentum Oscillator myself (part of VIDYA), after having read Martin J. Pring's book 'Trading Systems Explained - How to build reliable technical systems'
The CMO is a better oscillator for parcel splitting/scaling out than is RSI. Due to it factoring in both upward and downward momentum at the same time. So, it reaches the oversold and overbought regions more consistantly than RSI, but not more frequently. In that book he explains how to use the oscillator with a simple moving average to profit from both trending and ranging markets using a single method.
Here's the CMO with a histogram and average applied to it.
[Description ="CMOF - Filtered CMO, Max"]
n:= Input("Length",10,1);
momu:= If(C > Ref(C,-1),C - Ref(C,-1),0);
momd:= If(C < Ref(C,-1),Ref(C,-1) - C,0);
Momup:=momu / (1.75* Stdev(Abs(Typ()),n))*125;
Momdn:=momd / (1.75* Stdev(Abs(Typ()),n))*125;
CMOF:=100*(( Sum(Momup,n)-Sum(Momdn,n))/(Sum(Momup,n)+Sum(Momdn,n)));
[color =blue; width=2]
CMOF;
[linestyle =solid; color=gold]
Sig:= Ma(CMOF,10,S);
Sig;
[Name =Histogram; linestyle=Histogram; color=crimson]
hst:=CMOF - Sig;
if (ma(hst,3) < ref(ma(hst,3),-1),hst,undefined);
[color =lime green]
if (ma(hst,3) > ref(ma(hst,3),-1),hst,undefined);
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