|
PureBytes Links
Trading Reference Links
|
Hello Brian,
This is fantastic. I like the idea of counting bars since last pivot.
All examples however have small errors (missing operators) and do not
compile. Do you mind qualifying these lines;
MPK = PKV2 PKV0 ;//MajorPeak
and
TR = ROC(C,1) 0 ;//TroughRight
Regards
Richard
--- In amibroker@xxxxxxxxxxxxxxx, "brian_z111" <brian_z111@xxx> wrote:
>
> Hello Rich,
>
> I have done this using variations of the code at the bottom of the
> Pivots post (not so called 'Pivots' at the top which are really
> volatility bands).
>
> I have quantified ROC(pivots) and identified serial pivots using
> Valuewhen(Pivot,1) etc.... that was a while ago ... the memory fades.
>
> Note this version is sophisticated enought to 'count'bars with ==
> lows or highs but I have also used simpler versions with only three
> bars that have differential H or L.
>
>
>
> http://zboard.wordpress.com/
>
>
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, "richpach2" <richpach2@> wrote:
> >
> > G'Day Graham,
> >
> > Thank you for your comprehensive reply. All the rules you have
> listed
> > seem logical as a statement. I learn by example so, I need to
> analyze
> > a few examples to gain a better understanding of looping functions.
> >
> > I am trying to write a code which will detect first higher low
> trough
> > after a downtrend move which can be defined as two lower low troughs
> > and two lower low peaks. I am not sure if Zig function is best to do
> > that. Should I consider loops for this or use existing Zig function.
> > I could not locate anything in the library of similar nature so, I
> can
> > use is as an example of such a trend detection pattern.
> > Are you aware of any existing AFLs which addresses this or similar
> > pattern detection?
> >
> > Kind Regards
> > Richard
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, Graham <kavemanperth@> wrote:
> > >
> > > As a general rule I use loops when
> > >
> > > 1. Existing AB functions cannot fulfil requirements.
> > > eg use of AMA, Zig, Cum, or ApplyStop functions, or one of
> the
> > > many others available
> > >
> > > 2. The current bar value of a variable is calculated using the
> > > previous bar value of that same variable.
> > > eg EMA if that was not already a built in function in AB
> > >
> > > 3. The value of a variable is determined from a specific
> occurrence of
> > > a true condition, where that condition can have true values after
> that
> > > specific occurrence.
> > > eg trail stop value after Buy signal, that is not one of
> the
> > > existing ApplyStop function possibilities.
> > > This could be one that if could write simply would be
> > > HighestSince( Buy, H - ATR( 10 ) ), but this gets reset by any
> > > subsequent buy signals that you may not want to remove
> > > AB Applystop (ModePoint) currently has 2 possibilities
> if
> > > my memory is correct, they are
> > > A: Non-Volatile HighestSince( Buy, H ) - ValueWhen
> (
> > > buy, ATR( 10 ) ); and
> > > B: Volatile HighestSince( Buy, H ) - ATR(
> 10 );
> > > These bits of code would vary if you have a entry delay
> > after signal.
> > >
> > > 4. Loop through a set number series that have no direct relation
> to
> > > bar array identification as normally used in bar loops
> > > eg for( n=1; n<=5; n=n+2 )
> > >
> > > 5. Probably some others as well, but have written so many cannot
> > > always remember everything.
> > >
> > > Hopefully my examples of code above are correct, I just typed them
> > > into here from my poor memory
> > >
> > > --
> > > Cheers
> > > Graham Kav
> > > AFL Writing Service
> > > http://www.aflwriting.com
> > >
> > >
> > >
> > > 2009/2/20 richpach2 <richpach2@>:
> > > > Hello,
> > > >
> > > > Can some please expain use of loop (if, while etc) expression
> in AFL?
> > > > When do one need to use a loop and when can one just rely on
> > > > processing of the array bar-by-bar. I am still learining AFL
> language
> > > > and this area is a bit grey.
> > > >
> > > > I noticed many Stop processing AFL use "for" loop but I don't
> > > > understand why.
> > > > Also, if I can use this statement toi define EMA;
> > > >
> > > > P = ParamField("Price field",-1);
> > > > Periods = Param("Periods", 15, 2, 300, 1, 10 );
> > > > Plot( EMA( P, Periods ), _DEFAULT_NAME(), ParamColor( "Color",
> > > > colorCycle ), ParamStyle("Style") );
> > > >
> > > > why would I try this AFL doc example;
> > > >
> > > > myema[ 0 ] = Close[ 0 ];
> > > > for( i = 1; i < BarCount; i++ )
> > > > {
> > > > myema[ i ] = 0.1 * Close[ i ] + 0.9 * myema[ i - 1 ];
> > > > }
> > > > This example iterates all bars of close array to calculate
> > > > exponential moving average.
> > > >
> > > > Regards
> > > > Richard
> > > >
> > > >
> > > >
> > > > ------------------------------------
> > > >
> > > > **** IMPORTANT PLEASE READ ****
> > > > This group is for the discussion between users only.
> > > > This is *NOT* technical support channel.
> > > >
> > > > TO GET TECHNICAL SUPPORT send an e-mail directly to
> > > > SUPPORT {at} amibroker.com
> > > >
> > > > TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
> > > > http://www.amibroker.com/feedback/
> > > > (submissions sent via other channels won't be considered)
> > > >
> > > > For NEW RELEASE ANNOUNCEMENTS and other news always check
> DEVLOG:
> > > > http://www.amibroker.com/devlog/
> > > >
> > > > Yahoo! Groups Links
> > > >
> > > >
> > > >
> > > >
> > >
> >
>
------------------------------------
**** IMPORTANT PLEASE READ ****
This group is for the discussion between users only.
This is *NOT* technical support channel.
TO GET TECHNICAL SUPPORT send an e-mail directly to
SUPPORT {at} amibroker.com
TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
http://www.amibroker.com/feedback/
(submissions sent via other channels won't be considered)
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/amibroker/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/amibroker/join
(Yahoo! ID required)
<*> To change settings via email:
mailto:amibroker-digest@xxxxxxxxxxxxxxx
mailto:amibroker-fullfeatured@xxxxxxxxxxxxxxx
<*> To unsubscribe from this group, send an email to:
amibroker-unsubscribe@xxxxxxxxxxxxxxx
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|