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how to make Elder's Impulse expert system - how to make Elder's Impulse expert system
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AVENGINE  
#1 Posted : Monday, February 8, 2010 12:05:43 PM(UTC)
AVENGINE

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I got the formula from http://www.meta-formula....tml#Elders_AutoEnvelope_ Elder's Impulse system { Dr Elder's Impulse system interpretation v1.1}{ Plot signals on own window below daily chart } { Variables user-input } pdsNoEntry:=Input("No entry x periods from last exit",0,21,5); pdsW:=Input("Weekly EMA periods",1,520,13)*5; pdsD:=Input("Daily EMA periods",1,252,13); pdsShort:=Input("Shorter MACD periods", 1,252,12); pdsLong:=Input("Longer MACD periods",2,2520,26); pdsSignal:=Input("MACD trigger signal periods", 2,252,9); tradeDelay:=0; { Indicators } EmaW:=Mov(C,pdsW,E); EmaD:=Mov(C,pdsD,E); Mac:=Mov(C,pdsShort,E)-Mov(C,pdsLong,E); MacTrig:=Mov(Mac,pdsSignal,E); Hist:=Mac-MacTrig; { System logic } Out:={EmaW<ref(EmaW,-1) AND }EmaD<ref(EmaD,-1) AND Hist<ref(Hist,-1); In1:=EmaW>Ref(EmaW,-1) AND EmaD>Ref(EmaD,-1) AND Hist>Ref(Hist,-1); In:=In1 AND BarsSince(Out)>pdsNoEntry; { System signals } Init:=Cum(In+Out>-1)=1; InInit:=Cum(In)=1; flag:=Ref(BarsSince(Init OR In) <barsSince(Init OR Out)+InInit,-tradeDelay); signals:=(InInit AND Alert(InInit=0,2) OR flag AND Alert(flag=0,2)) -(flag=0 AND Alert(flag,2)); { Plot } 0;signals I would like to know how can i make this into a expert system so that I can get the alert. thanks.
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johnl  
#2 Posted : Tuesday, February 9, 2010 6:39:24 PM(UTC)
johnl

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There shouldn't be any programming to convert the indicator to an expert. Look at how a similar expert is done that you like and follow that example. Use the user manual as a reference. Creating the indicator is usually the difficult part. If you get stuck, post your results.
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henry1224  
#3 Posted : Tuesday, February 9, 2010 7:29:01 PM(UTC)
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this section has undefined errors listed in bold
{ System logic }
Out:={EmaW AND }EmaD AND HistIn1:=EmaW>Ref(EmaW,-1)
AND EmaD>Ref(EmaD,-1)
AND Hist>Ref(Hist,-1);
In:=In1 AND BarsSince(Out)>pdsNoEntry;

if you correct those the code will work in metastock

it looks like code from Jose Silva, so look in metastocktools.com
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henry1224  
#4 Posted : Tuesday, February 9, 2010 7:37:57 PM(UTC)
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here is the code from Jose Silva and Metastocktools.com

======================
Elder's Impulse system
======================
---8<------------------------------------------

{ Dr Elder's Impulse system interpretation v1.1
 Plot signals on own window below daily chart.
 http://www.elder.com/MetaStock/Impulse.htm

 http://www.metastocktools.com }

{ Variables user-input }
pdsNoEntry:=Input("No entry x periods from last exit",0,21,5);
pdsW:=Input("Weekly EMA periods",1,520,13)*5;
pdsD:=Input("Daily EMA periods",1,252,13);
pdsShort:=Input("Shorter MACD periods",
 1,252,12);
pdsLong:=Input("Longer MACD periods",2,2520,26);
pdsSignal:=Input("MACD trigger signal periods",
 2,252,9);
tradeDelay:=0;

{ Indicators }
EmaW:=Mov(C,pdsW,E);
EmaD:=Mov(C,pdsD,E);
Mac:=Mov(C,pdsShort,E)-Mov(C,pdsLong,E);
MacTrig:=Mov(Mac,pdsSignal,E);
Hist:=Mac-MacTrig;

{ System logic }
Out:={EmaW<Ref(EmaW,-1)
 AND }EmaD<Ref(EmaD,-1)
 AND Hist<Ref(Hist,-1);
In1:=EmaW>Ref(EmaW,-1)
 AND EmaD>Ref(EmaD,-1)
 AND Hist>Ref(Hist,-1);
In:=In1 AND BarsSince(Out)>pdsNoEntry;

{ System signals }
Init:=Cum(In+Out>-1)=1;
InInit:=Cum(In)=1;
flag:=Ref(BarsSince(Init OR In)
 <BarsSince(Init OR Out)+InInit,-tradeDelay);
signals:=(InInit AND Alert(InInit=0,2)
 OR flag AND Alert(flag=0,2))
 -(flag=0 AND Alert(flag,2));

{ Plot }
0;signals

---8<------------------------------------------


http://www.metastocktools.com
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AVENGINE  
#5 Posted : Wednesday, February 10, 2010 1:26:43 PM(UTC)
AVENGINE

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Posts: 17
thanks for all the reply, in metastock expert system, most of them I try before do not has the user input, is there some example in ms10 that use this function, so that I can try to follow it and apply the code into my charts. I am using 3 in no entry x periods from last exit. thanks.
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johnl  
#6 Posted : Wednesday, February 10, 2010 6:59:30 PM(UTC)
johnl

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Posts: 602
Work backwards from simple to hard. Redefine the user inputs to something like:

pdsNoEntry:=5;
pdsW:=13*5;
pdsD:=13;

etc. to create the expert.
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