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Re: [amibroker] AFL - John Ehlers Trade Station Code



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Hello,

You have to use DOLLAR (not percent) rate of change which is equal to one day momentum

Array - Ref( Array, -1 );

So you should use:

Plot( 10 * ( Fish - Ref(Fish, - 1)), "10*Mom(Fish)", colorRed);

Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message ----- 
From: "Steve Almond" <steve2@xxxxxxxxxxxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Friday, April 02, 2004 1:55 PM
Subject: [amibroker] Fisher Question - TJ?


> This AFL (below) provides the first two curves of the Fisher Transform.
> According to John Ehlers we should also look at the ROC of 'fish'. See here:
> 
> http://www.mesasoftware.com/Fisher.doc
> 
> When I try to do this using:
> 
> plot(ROC(Fish,1),"ROC",1,1);
> 
> I get a strange line, not at all like Ehlers'.
> 
> Here is the metastock version:
> 
> http://www.equis.com/Support/TASCArticles/ViewArticle.aspx?Id=37
> 
> Can anyone help me sort my ROC?
> 
> Steve
> 
> 
> ----- Original Message ----- 
> From: "Tomasz Janeczko" <amibroker@xxxxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Wednesday, March 24, 2004 12:50 AM
> Subject: Re: [amibroker] TRANSLATION OF AN EASY LANGUAGE FORMULA
> 
> 
> > Hello,
> >
> > Translated code:
> >
> > Price= ((H+L)/2);
> > Len=10;
> >
> > MaxH=HHV(Price,Len);
> > MinL=LLV(Price,Len);
> > Value1=AMA( 2*((Price-MinL)/(MaxH-MinL)-.5), 0.5 );
> > Value1 = Min( Value1, 0.9999 );
> > Value1 = Max( Value1, -0.9999 );
> > Fish= AMA2( 0.25*log((1+Value1)/(1-Value1)), 1, 0.5 );
> >
> > Plot(Fish, "Fisher", colorRed);
> > Plot( Ref(Fish,-1), "Trigger",colorBlue);
> >
> >
> > Best regards,
> > Tomasz Janeczko
> > amibroker.com
> > ----- Original Message ----- 
> > From: "renilange" <reni.lange@xxxxxxxx>
> > To: <amibroker@xxxxxxxxxxxxxxx>
> > Sent: Wednesday, March 24, 2004 12:25 AM
> > Subject: [amibroker] TRANSLATION OF AN EASY LANGUAGE FORMULA
> >
> >
> > > Could somebody translate this ELA formula in AFL??
> > > It is a really great indicator,called Fisher Transform, I saw it
> > > work by a friend of mine using Tradestation.
> > > It is really worth to translate it!
> > >
> > > Thxs. Reni
> > >
> > > Inputs:    Price((H+L)/2),
> > >            Len(10);
> > >
> > > Vars:      MaxH(0),
> > >            MinL(0),
> > >            Fish(0);
> > > MaxH=Highest(Price,Len);
> > > MinL=Lowest(Price,Len);
> > > Value1=.5*2*((Price-MinL)/(MaxH-MinL)-.5)
> > >   + .5*Value1[1];
> > > If Value1> .9999 then Value1 = .9999;
> > > If Value1< .9999 then Value1 = -.9999;
> > > Fish= 0.25*Log((1+Value1)/(1-Value1)) + 5* Fish[1];
> > >
> > > Plot1 (Fish, "Fisher");
> > > Plot2(Fish[1], "Trigger");
> > >
> > >
> > >
> > >
> > > Send BUG REPORTS to bugs@xxxxxxxxxxxxx
> > > Send SUGGESTIONS to suggest@xxxxxxxxxxxxx
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> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
> > Send BUG REPORTS to bugs@xxxxxxxxxxxxx
> > Send SUGGESTIONS to suggest@xxxxxxxxxxxxx
> > -----------------------------------------
> > Post AmiQuote-related messages ONLY to: amiquote@xxxxxxxxxxxxxxx
> > (Web page: http://groups.yahoo.com/group/amiquote/messages/)
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> > Check group FAQ at:
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> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> 
> 
> 
> 
> Send BUG REPORTS to bugs@xxxxxxxxxxxxx
> Send SUGGESTIONS to suggest@xxxxxxxxxxxxx
> -----------------------------------------
> Post AmiQuote-related messages ONLY to: amiquote@xxxxxxxxxxxxxxx 
> (Web page: http://groups.yahoo.com/group/amiquote/messages/)
> --------------------------------------------
> Check group FAQ at: http://groups.yahoo.com/group/amibroker/files/groupfaq.html 
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 


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