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Cyclical MA Projection

Formula for: MetaStock

indicator

Views: 1390

Added: June 17, 2007

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Tags: MetaStock, indicator

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Hi traders,
I am trying to modify Jose's Centred MA that extends the last MA value to the last trading date.

I hope to replace the extended part of the MA using an estimated curve or a straight line with last few MA values.

As shown below, I calucalate the difference of the last 2 MA values (maybe a +ve or -ve difference) and then add the difference to the last MA values recursively.

But i failed to show the desired result after a number of trials.

Could you kindly advise on the algorithm. Thanks in advance for the help.

Chu

==========================================

{ Centered MA - v2.0 }
{ Uses forward-referencing to center Mov Avg.}

{ Copyright 2005 Jose Silva
For personal use only.
http://www.metastocktools.com }

{ User inputs }
pds:=Input("MA periods",1,2600,10);
type:=Input("[1]EMA [2]SMA [3]TmSr [4]Tri [5]Var [6]Vol [7]
Wght",1,7,2);

{ Choose MA type:
1 - Exponential MA
2 - Simple MA
3 - Time Series MA
4 - Triangular MA
5 - Variable MA
6 - Volume adjusted MA
7 - Weighted MA }
ma:=
If(type=1,Mov(C,pds,E),
If(type=2,Mov(C,pds,S),
If(type=3,Mov(C,pds,T),
If(type=4,Mov(C,pds,TRI),
If(type=5,Mov(C,pds,VAR),
If(type=6,Mov(C,pds,VOL),
Mov(C,pds,W)))))));

{ Forward-reference MA }
center:=LastValue(Int(pds/2));
fwd:=Ref(ma,center);

{ Extend plot into null zone }
xtend:=LastValue(fwd+PREV-PREV);

{******* the line i add **********}
{extending using a straight line}
xtend:=If(xtend=Ref(xtend,-1),Ref(xtend,-1)*2-Ref(xtend,-2),xtend);

{ Restrict invalid initial MA plot }
ma:=Ref(Ref(xtend,pds-1),-pds+1);

{ Plot MA on price chart }
ma

===========================================

This is one possible projection solution that we came up with a few weeks ago with help from Jose and Roy. Its hard wired for a 9-day average, but gives one idea of how to do it. Like any projection its less reliable the further out it goes.

Andrew

Code:

Cyclical MA Projection (9)

{with help from Jose & Roy}
P1:=9;
Pr:=(O+H+L+C)/4;
MA:=Mov(Pr,P1,TRI);
Shift:=Round(p1/2);
center:=LastValue(Shift);
CMA:=Ref(MA,center);
y:=LastValue(CMA+PREV-PREV);
CMA:=If(y>0,y,Pr);
CMA1:=Ref(Mov(Pr,P1-1,TRI),center-1);
y:=LastValue(CMA1+PREV-PREV);
CMA1:=If(y>0,y,Pr);
CMA2:=Ref(Mov(Pr,P1-2,TRI),center-2);
y:=LastValue(CMA2+PREV-PREV);
CMA2:=If(y>0,y,Pr);
CMA3:=Ref(Mov(Pr,P1-3,TRI),center-3);
y:=LastValue(CMA3+PREV-PREV);
CMA3:=If(y>0,y,Pr);
CMA4:=Ref(Mov(Pr,P1-4,TRI),center-4);
y:=LastValue(CMA4+PREV-PREV);
CMA4:=If(y>0,y,Pr);
CMA5:=Ref(Mov(Pr,P1-5,TRI),center-5);
y:=LastValue(CMA5+PREV-PREV);
CMA5:=If(y>0,y,Pr);

CMAP:=
If(Cum(1)=LastValue(Cum(1)-center+1),CMA1,
If(Cum(1)=LastValue(Cum(1)-center+2),CMA2,
If(Cum(1)=LastValue(Cum(1)-center+3),CMA3,
If(Cum(1)=LastValue(Cum(1)-center+4),CMA4,
If(Cum(1)=LastValue(Cum(1)-center+5),CMA5,CMA)))));

CMAP;

Author: Andrew Tomlinson
Source: EquisMetastock[at]yahoogroups[dot]com

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