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FTR I am sceptical about the efficacy of the auto trend lines as
plotted in the Ensign example (first image) but that isn't sufficient
reason for you, or others, not to investigate the value in that
approach for yourself.
As per LYEN's comments in message #132412 the definition of a trend
is somewhat arbitrary and varies according to the taste of the
user..... to define a trend a starting point has to be selected ..
why chose one point over and above any other?
In the case of the Ensign example it so happens that I don't like
their choice of 'points' ... it is all a little to convenient for my
tastes but that is only a personal opinion.... if they hadn't made
some arbitrary decisions about where the peak/troughs are then they
wouldn't have been able to plot the trend.
Making assumptions to code our models is O.K as long as the
definition remains constant, for all instances, and has predictive
power.
brian_z
--- In amibroker@xxxxxxxxxxxxxxx, "brian_z111" <brian_z111@xxx> wrote:
>
> I wouldn't call myself very knowledgeable with AB!
>
> Not sure exactly what you mean by "linear Zig /Peak/Trough".
>
> It appears they have several auto plots (channel etc) ...
referencing
> the first auto trend line example.
>
> IMO it is not based on Zig Zag but it could be described at linear
> peak/trough.
> It looks like they use a version of peak, or trough, to identify
the
> start of a trend and then use cross of the current trend line as
the
> trend end.
>
> Note that there are several versions of a peak and trough
around ...
> personally I don't agree with them except for the most simple
> definition e.g. a peak == lower high, higher high and lower high
> across three consecutive bars (it can also be 2.1.2 bars for a more
> conservative approach but I don't like that as much as 1.1.1).
>
> Once you have two lower highs (peaks) then you have a downtrend
> (according to this model).
>
> From their example there are a couple of minor trends missing but
the
> rest of it fits the model.
>
> I have coded peaks and troughs (and variations thereon) in this way
> but I havenot tried to plot an auto trend line.
> I have plotted lines that visually give the exact same info, or
that
> could trigger a coded response to the end of a 'trend' BUT they
were
> not trend lines as such (I considered each lower low/higher high as
a
> natural support or resistance line).
>
> I don't have the code handy although I could possibly find it (I
> don't archive code because it makes me mentally lazy and too
attached
> to old trading ideas ... if and when I reinstall AB I start afresh
> with no saved AFL) ... possibly I have a hard copy, or a AFL file
> somewhere on an old drive, left over from my archiving days.
>
> If I trip over it, with a quick search I will post it ... if I
don't
> post it that indicates I burnt the code (sorry I can't take time
out
> to renew research on trendlines at the moment).
>
>
> If you are interested in pattern recognition then Thomas.Z and
> PatternExplorer are worth a thought.
>
> Ensign seem to also have auto Gann lines and Fibo lines.
> I think Bill Seward is a Gann and Fibonacci guy and his work may
also
> be worth consideration.
>
> Either of them might provide a leg up.
>
> http://www.amibroker.com/links.html
>
> If you like doing it yourself there must be some code around
> somewhere that attmempts autotrends.
>
> brian_z
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Tim" <raven4ns@> wrote:
> >
> > What do you think they are using in this Ensign study called Auto
> > trends. Is it zig zag , or linear Zig /Peak/Trough. Perhaps some
of
> > the members who are very knowledgeable with Amibroker can tell me.
> > Here is the url for the Ensign study:
> >
> > http://ensign.editme.com/t58analysis
> >
> > Thank you for your thoughts on this matter.
> >
> > Kindest regards,
> >
> > Tim
> >
>
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