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I'm actually not looking for the signal, I'm looking to confirm the
trend. Tomasz seems to be using 6% as the parameter, but I seriously
doubt it...
rgds, Pal
--- In amibroker@xxxxxxxxxxxxxxx, "Jayson" <jcasavant@xxxx> wrote:
> Greg,
> the challenge is the signal will always be late. If you set your
pivots at,
> say, 5% then zz trend will not trigger until 5% after the turn
actually
> happened. The picture that Tomasz just posted illustrates this
> perfectly......
>
> Regards,
> Jayson
> -----Original Message-----
> From: Greg [mailto:gregbean@x...]
> Sent: Monday, November 24, 2003 3:19 PM
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: Re: [amibroker] Re: Peak & Zig Zag
>
>
> Hi,
>
> I was wondering if anyone has read the Nov. 2003 TASC article
about ZigZag
> trend indicator.
>
> The author claims it to be a tradeable indicator because it solves
> theproblem of the dynamic last leg.
>
> I was thinking this might be adapted with a validating signal such
as TRIX
> and or StoRSI but I haven't tested any further . Anybody have any
thoughts
> about the TASC article and/or the indicator?
>
> Greg
>
> Here is the code that TJ programmed:
>
> /*THE ZIGZAG TREND INDICATOR
>
> In "The Zigzag Trend Indicator" article Spyros Raftopoulos presents
an
> enhancement of his zigzag validity indicator. A new Zigzag Trend
indicator
> is an attempt to address shortcomings (mainly 'last leg' problem)
of classic
> zigzag. The technique involves delaying the response of the
indicator as
> long as reversal amount is reached AND last leg of zigzag line
becomes valid
> AND can be easily reproduced in AmiBroker using its native AFL
language.
> Listing 1 shows ready-to-use code that can be applied in Indicator
Builder.
> It includes also a very basic reversal trading system to be applied
in
> Automatic Analysis window. The percentage reversal amount can be
changed
> on-the-fly without modifying the code using the Parameters window.
>
> LISTING 1*/
>
> array = Close;
>
> amount = Param("Amount", 6, 1, 50, 0.5 );
>
> zz0 = Zig( array, amount );
>
> zz1 = Ref( zz0, -1 );
>
> zz2 = Ref( zz0, -2 );
>
> tr = ValueWhen(zz0 > zz1 AND zz1 < zz2, zz1);
>
> pk = ValueWhen(zz0 < zz1 AND zz1 > zz2, zz1);
>
> PU = tr + 0.01 * abs(tr)*amount;
>
> PD = pk - 0.01 * abs(pk)*amount;
>
> ZZT = IIf( array >= PU AND zz0 > zz1, 1,
>
> IIf( array <= PD AND zz0 < zz1, -1, 0 ) );
>
> ZZT = ValueWhen( ZZT != 0, ZZT );
>
> // plot price bar chart
>
> Plot( Close, "Price", colorBlack, styleBar );
>
> // plot Zigzag and zigzag trend
>
> Plot( ZZT, "ZigZagTrend", colorRed, styleOwnScale );
>
> Plot( zz0, "ZigZag line", colorBlue, styleThick );
>
> // Plot the ribbon
>
> ribboncol= IIf( ZZT > 0, colorGreen, colorRed );
>
> Plot( 2, "ZZT Ribbon", ribboncol, styleArea | styleOwnScale |
styleNoLabel,
> 0, 100 );
>
> GraphXSpace = 10;
>
> Buy = Cover = Cross( ZZT, 0 );
>
> Sell = Short = Cross( 0, ZZT );
>
> // plot arrows
>
> PlotShapes( Buy + 2 * Sell, ribboncol, 0, IIf( Buy, L, H ), -30 );
>
>
> ----- Original Message -----
> From: Jayson
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Monday, November 24, 2003 3:29 PM
> Subject: RE: [amibroker] Re: Peak & Zig Zag
>
>
> The Challenge Phsst is that the legs can changed based on future
data in
> which case your buy or sell signal can simply vanish in the back
test. Zig
> can be very useful in real time but like every thing else in Real
time you
> simply can not know for sure until time has past if your signal was
in fact
> valid or not. A back test using zig (or peak or trough) will always
show you
> the best signals only and none of the failed signals.
>
> Regards,
> Jayson
> -----Original Message-----
> From: Phsst [mailto:phsst@x...]
> Sent: Monday, November 24, 2003 1:57 PM
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: [amibroker] Re: Peak & Zig Zag
>
>
> Excuse me... Enter key on Subject Line gets me too often.
>
> It is clear that Zig Zag *can* give unrealistic test results
because
> it looks into the future. This is documented. But there is almost
the
> caveat *can* included in the caution.
>
> But are there any known conditions where test results can be
relied upon.
>
> For example if a calculated trendline up to the current bar is
more
> than a few bars old, and is linear for those past bars, and
correlates
> (for lack of a better word) with current bar close price, does
this
> not perhaps mean that an assumption can be safely made that future
> prices have not yet influenced the current trend?
>
> Regards,
>
> Phsst
>
>
>
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