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Things are "simple": The peak(ARRAY, change,1)will give the value of
the most recent [known] peak.
In ^NDX chart, for example, the most recent Peak(H,5,1) is on June30,
2004 [H0=1523.48]. There is NO problem with this [EOD updated up to
Oct26, 2004].
The question is : Is there any peak(H,5,1) BETWEEN June30 and Oct26 ?
The answer [today] is negative.
Three days later, if ^NDX falls below 1400, the Oct6 WILL BE A PEAK !!
But, Oct6 already belongs to the past.
This is what we must understand with these functions : They
*discover* the peak some days later. Of course this comment is for
the probable new peaks and has nothing to do with Peak(H,5,1).
Peak(H,5,1) is the value of the most recent [established] Peak, it is
known and unique for today. From June 30 up to Oct26 there are many
PROBABLE peaks, we shall know more details in the future, NOT TODAY !!
Dimitris
--- In amibroker@xxxxxxxxxxxxxxx, "dbirru" <dbjunk@xxxx> wrote:
>
> Ok. I understand about the zig function.
>
> I am asking specifically about the peak function.
> What you described below should affect only peak(C,10,1), that is
> the most recent peak. The last argument refers to the peak number
> relative to the current bar. The peak prior to the most recent peak
> has already been established by the time the most recent peak,
> (C,10,1), is being established.
>
> Is this wrong? If Not can someone give un example?
>
> Thanks.
>
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, Terry <MagicTH@xxxx> wrote:
> > The last number in the Zig function is the percent change. The
> higher the
> > number, the farther into the future it looks. It waits until the
> price moves
> > the percent change, then marks the low point (back in time) at
> which is
> > pivoted. You can never know this point before the price moves.
> Your backtest
> > will look fantastic because you are always picking great tops and
> bottoms 1
> > to several days AFTER they happen. Let me know if you have a
> broker that
> > will give you yesterdayıs open price ;-)
> > --
> > Terry
> >
> >
> > From: "dbirru" <dbjunk@xxxx>
> > Reply-To: amibroker@xxxxxxxxxxxxxxx
> > Date: Tue, 26 Oct 2004 02:01:48 -0000
> > To: amibroker@xxxxxxxxxxxxxxx
> > Subject: [amibroker] on peak/zig functions
> >
> >
> >
> > I am tryig to understand how some functions, like, the peak(..),
> > zig() functions work in AB for backtesting.
> >
> > I understand that these functions can refer to future values if
> used
> > in backtesting. My understanding is that
> > peak(C,20,1) can refer to future values. But
> > peak(C,20,2) will not. All of those that refer to prior values
(the
> > last arguement)greater than 1 will not refer to future values
since
> > they don't depend on futue values.
> >
> > Is this understanding correct? If not, can someone give me an
> > example where peak(C,20,2) also refers to future values?
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Check AmiBroker web page at:
> > http://www.amibroker.com/
> >
> > Check group FAQ at:
> > http://groups.yahoo.com/group/amibroker/files/groupfaq.html
> >
> >
> > Yahoo! Groups Sponsor
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