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Dimitris,
My role on this list is to show possibly the best ways
to use AmiBroker. So I provided the sample code
using functions that is in my opinion the best solution
for given problem.
Your AddToComposite-based code is very appreciated
and obviously nice example of 'what can be done'
but I try to focus on optimum solutions.
I provide the code for the user who asked for this and
I have no intention to hurt anyones ego.
Now to the subject:
User defined function has one MAJOR advantage:
it is REUSABLE.
You write function ONCE, place it in common.afl
and include it via #include command in any place you wish.
You gain:
- better organization - write ONCE use MANY TIMES
- much shorter and clearer code
- no-need to copy/paste
- no need to pre-scan (required AddToComposite)
Once you define function it becomes as easy to use
as any built-in function.
As to your second concern about abilty to use any
AFL function that way it is very easy:
/* WRITE ONCE */
function ForeignADX( symbol, period )
{
/* save original price arrays */
SC = C;
SO = O;
SH = H;
SL = L;
C = Foreign( symbol, "C" );
H = Foreign( symbol, "H" );
L = Foreign( symbol, "L" );
O = Foreign( symbol, "O" );
Result = ADX( period ); // REPLACE THIS BY ANY AFL FUNCTION
/* restore original arrays */
C = SC;
O = SO;
H = SH;
L = SL;
return Result;
}
/* USE MANY TIMES */
Plot( ForeignADX( "MSFT", 14 ), "ADX MSFT", colorRed );
Plot( ForeignADX( "IBM", 14 ), "ADX IBM", colorBlue );
Plot( ForeignADX( "AAPL", 14 ), "ADX AAPL", colorGreen );
Plot( ForeignADX( "NVDA", 14 ), "ADX NVDA", colorGreen );
Plot( ForeignADX( "AMD", 14 ), "ADX AMD", colorGreen );
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "DIMITRIS TSOKAKIS" <TSOKAKIS@xxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Friday, May 09, 2003 8:46 AM
Subject: [amibroker] Re: Relative Indicator Values
Tomasz,
My intention was to present an [interesting IMO] AddToComposite()
application, to show "what can be done".
I did not claim it was the shortest way to Rome.
BTW, in your code you need the analytic definition of Stochastic
functions .
[do you consider it easily available to a user ? I love the
definitions but, many messages in this list will not agree]
I am not sure if people have an easy reference to the analytic
definition for ANY AFL built-in function.
Just some examples : accdist(), adx( ), chaikin( ), mfi( ).
Much more, who knows if adx(), for example, is a function of C or H
or L or V or a combination ?
You also suppose a user familiar to T/A anlytic expressions, ie an
advanced user.
[I do not have the same experience from the messages of this list]
And, of course, I knew a quite simple solution without AddToComposite
() or Function() or analytic definition use before posting
this contribution.
Just replace all HLCV arrays, redefine them at the end and thatīs it.
H1=H;L1=L;C1=C;V1=V;
N="^NDX";H=Foreign(N,"H");L=Foreign(N,"L");C=Foreign(N,"C");
StochDNDX=StochD();
N="MSFT";H=Foreign(N,"H");L=Foreign(N,"L");C=Foreign(N,"C");
StochDMSFT=StochD();
N="INTC";H=Foreign(N,"H");L=Foreign(N,"L");C=Foreign(N,"C");
StochDINTC=StochD();
Plot(StochDNDX,"^NDX",4,1);Plot(StochDMSFT,"MSFT",1,1);Plot
(StochDINTC,"INTC",2,1);
H=H1;L=L1;C=C1;V=V1;
Plot(StochD(),Name(),7,2);
Thank you for the interesting Function() example.
Dimitris Tsokakis
--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <amibroker@xxxx>
wrote:
> Hello,
>
> Much easier to use (not requiring any pre-scan) and less resource
consuming is
> ( AB 4.33 or higher )
>
> function ForeignStochD( symbol, Kperiod, Dperiod )
> {
> FC = Foreign( symbol, "C" );
> FH = Foreign( symbol, "H" );
> FL = Foreign( symbol, "L" );
>
> FASTSTOCHK = 100*(FC-LLV(FC,kPeriod))/(HHV(FH,kPeriod)-LLV
(FL,kPeriod));
> SLOWSTOCHK = MA( FastStochK, Dperiod );
> SLOWSTOCHD = MA( SLOWSTOCHK, Dperiod );
> return SLOWSTOCHD;
> }
>
> Plot( ForeignStochD( "MSFT", 14, 3 ), "Stoch MSFT", colorRed );
>
> Plot( ForeignStochD( "IBM", 14, 3 ), "Stoch MSFT", colorBlue );
>
> Plot( ForeignStochD( "AAPL", 14, 3 ), "Stoch MSFT", colorGreen );
>
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "DIMITRIS TSOKAKIS" <TSOKAKIS@xxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Thursday, May 08, 2003 10:04 PM
> Subject: [amibroker] Relative Indicator Values
>
>
> > To compare indicator X values with some reference stocks, run in
AA
> > the
> >
> > X=StochD();
> > AddToComposite(X,"~StochD"+Name(),"C");
> > Buy=0;
> >
> > All individual Stochastics are now separate tickers
> > ~StochD^NDX
> > ~StochDAAPL
> > ~StochDMSFT
> > etc.
> > In IB paste
> >
> > Plot(Foreign("~StochD^NDX","C"),"^NDX",4,8);
> > Plot(Foreign("~StochDMSFT","C"),"MSFT",1,1);
> > Plot(Foreign("~StochDINTC","C"),"INTC",2,1);
> > Plot(Foreign("~StochD"+Name(),"C"),Name(),7,2);
> >
> > to compare each stock StochD with the 3 references ^NDX, MSFT,
INTC.
> >
> > X may be any complicated function. Just place
> >
> > X=myFunction;
> > AddToComposite(X,"~myFunctionName"+Name(),"C");
> > Buy=0;
> >
> > Dimitris Tsokakis
> >
> >
> >
> > Send BUG REPORTS to bugs@xxxx
> > Send SUGGESTIONS to suggest@xxxx
> > -----------------------------------------
> > 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
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
> >
Send BUG REPORTS to bugs@xxxxxxxxxxxxx
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