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Re: [amibroker] Dunnigan Trend


  • Date: Wed, 2 Dec 2009 20:54:54 +0800
  • From: "Tim" <timkthung@xxxxxxxxxxxx>
  • Subject: Re: [amibroker] Dunnigan Trend

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Thank you so much Rick. You are so helpful. Would you teach me how to add Buy when it is 1 and Sell when it is -1 to the formula.
I need to learn how to write up a formula a little bit at a time.
 
Thanks in advance again.
 
Tim
 
 

Sent: Tuesday, December 01, 2009 9:01 AM
Subject: Re: [amibroker] Dunnigan Trend

 

I took a stab at it
Note the considerable similarities between MS and AB code.

//Dunn-Type1
//==========

TD1 = IIf( BarsSince( H > Ref( H, -1 ) AND L > Ref( L, -1 ) ) <
       BarsSince( L < Ref( L, -1 ) AND H < Ref( H, -1 ) ), 1, -1 );

//Dunn-Type2
//==========

TD2 = IIf( BarsSince( ( H > Ref( H, -1 ) AND L > Ref( L, -1 ) ) AND
          ( Ref( H, -1 ) > Ref( H, -2 ) AND Ref( L, -1 ) > Ref( L, -2 ) ) ) <
           BarsSince( ( L < Ref( L, -1 ) AND H < Ref( H, -1 ) ) AND
         ( Ref( L, -1 ) < Ref( L, -2 ) AND Ref( H, -1 ) < Ref( H, -2 ) ) ), 1, -1 );

// Ask to use 1 Day OR 2 Day Swing type}
St = Param( "Short Term Swing Type, 1 or 2 ?", 2, 1, 2, 1 );

//{Call Swing Type Formula}
Sd = IIf( St == 1, TD1, TD2 );

//{Number Of Periods Since Swing Started Up}
Hc = BarsSince( SD = -1 );

//{Number Of Periods Since Swing Started Down}
Lc = BarsSince( SD = 1 );

//{Find Highest Value Of Up Swing}
Hv = IIf( Hc > Lc AND H > Ref( H, -1 ), HighestSince( Hc = 1, H, 1 ) , 0 );

//{Find Lowest Value Of Down Swing}
Lv = IIf( Hc < Lc AND L < Ref( L, -1 ), LowestSince( Lc = 1, L, 1 ) , 0 );

//{Find The Low Of The Highest High}
Hlv = ValueWhen( H = Hv, L, 1 ) ;

//{Find The High Of The Lowest Low}
Lhv = ValueWhen( L = Lv, H, 1 ) ;

//{Calculate AND Plot Trend Direction,
//Note: 1= Uptrend,
//-1= Downtrend}

TD3 = IIf( Sd = 1 AND H > Lhv, 1, IIf( Sd = -1 AND L < Hlv, -1, 0 ) );
TD4 = ValueWhen( TD2 != 0, TD2, 1 );

// All that remains is to plot whatever you want to see
 
Best Regards
Rick Osborn



From: Tim <timkthung@xxxxxxcom.au>
To: amibroker@xxxxxxxxxps.com
Sent: Fri, November 27, 2009 3:29:34 AM
Subject: [amibroker] Dunnigan Trend

 

Hi,
 
I am a newbie to Amibroker, but I had tried Metastock briefly. To me Amibroker is more user friendly and has many value added applications such as free data feed from IB and yahoo + many others....
 
I need your help converting one my trend following indicator to Amibroker format and create buy and sell signals for my backtesting. While at the same time I will try to learn a little bit at a time in doing so. Any useful reference for me would be appreciated.
 
Anyway thinks you all in advance.
 
Best regards,
 
Tim
 

Dunn-Type1
==========
 
TD1:=If(BarsSince( H>Ref(H,-1) AND L>Ref(L,-1)) <
BarsSince(L<Ref(L,-1) AND H<Ref(H,-1)),
{then}1,
{else}-1);
TD1
 

Dunn-Type2
==========
 
TD1:=If(BarsSince( (H>Ref(H,-1) AND L>Ref(L,-1))
AND (Ref(H,-1)>Ref(H,-2)
AND Ref(L,-1)>Ref(L,-2))) <
BarsSince((L<Ref(L,-1) AND H<Ref(H,-1))
AND (Ref(L,-1)<Ref(L,-2)
AND Ref(H,-1)<Ref(H,-2))),
{then}1,
{else}-1);
TD1
 
 
 
Dunnigan Trend
============ ==
 
{Ask to use 1 day or 2 day Swing type}
St:=Input("Short Term Swing Type, 1 or 2 ?",
1,2,2);
{Call Swing Type Formula}
Sd:=If(Round( St)=1,
{then} FmlVar("Dunn- Type1","TD1" ),
{else} FmlVar("Dunn- Type2","TD1" ));
{Number Of Periods Since Swing Started Up}
Hc:=BarsSince( SD=-1);
{Number Of Periods Since Swing Started Down}
Lc:=BarsSince( SD=1);
{Find Highest Value Of Up Swing}
Hv:=If(Hc>Lc AND H>Ref(H,-1),
{then}HighestSince( 1,Hc=1,H) ,
{else}0);
{Find Lowest Value Of Down Swing}
Lv:=If(Hc<Lc AND L<Ref(L,-1),
{then}LowestSince( 1,Lc=1,L) ,
{else}0);
{Find The Low Of The Highest High}
Hlv:=ValueWhen( 1,H=Hv,L) ;
{Find The High Of The Lowest Low}
Lhv:=ValueWhen( 1,L=Lv,H) ;
{Calculate And Plot Trend Direction,
Note: 1= Uptrend,
-1= Downtrend}
TD2:=If(Sd=1 AND H>Lhv,
{then}1,
{else}If(Sd= -1 AND L<Hlv,
{then}-1,
{else}0));
TD3:=ValueWhen( 1,TD2<>0,TD2);
TD3



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