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hi BM,
I confirm that the built-in uses the Preferences|Indicators|Stochastic
values.
I did the steps a) thru d) below and for Preferences|Indicators|Stochastic
values of 14, 3, and 3 for range, %Ksmooth, and %Dsmooth, respectively, I
see NO difference in the resulting curves.
However, when I changed the %Ksmooth and %Dsmooth to anything other than
'3', interestingly the default for both in Help, the differences are very
noticeable.
Sorry, but I don't have an explanation, other than that's the way TJ
designed it.
-john
PS: Your English seems fine; what is your native language?
----- Original Message -----
From: "bromba" <bromba@xxxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Saturday, December 13, 2003 12:28 PM
Subject: Re: [amibroker] AB built-in stochastic vs. my own: the same code,
different picture
> hello john,
>
> > This may not be a complete answer to your dilemma but, first of all, to
> > 'obtain the same result' as your first example, I had to use this code:
> >
> > range = Prefs( 14 );
> > _N( ranstr = "("+WriteVal( range, 1.0 )+")" );
> > Plot( StochK(range,3), "Stochastic %K"+ranstr, -8 );
> > Plot( StochD(range,3,3), "Stochastic %D"+ranstr, -9 );
>
> that's strange. maybe because my native language is not english and that
> causes some misunderstanding. John, I mean that if I:
> a) change under preferences values for built-in Stochastic Slow, for
> example, range=21, %Ksmooth=1, %Dsmooth=14 and apply them;
> b) create myStochastic custom indicator, with the same, copied code form
> built-in Stochastic Slow (except the line with "indicator End");
> c) plot built-in Stochastic Slow;
> d) plot myStochastic;
>
> and compare plots, there are differences.
>
> it seems to me that (the same AFL) code used in built-in Stochastic Slow
> indicator utilizes the %K,%D settings under Preferences, whereas the
> same AFL code copied as custom indicator has to be supplied explicitly
> with these values. otherwise AB uses default values (as you mentioned):
> "3" for both %K and %D.
>
> > In doing that, with Amibroker 4.50.5, I was just explitly using the
default
> > StochK and StochD values from the Help file. (to see these values, press
F1
> > after putting the cursor within the function name in question.)
>
> i have 4.40T and the same info in help file.
>
> > And I think the Stochastic settings in Preferences|Indicators apply only
to
> > StochD.
>
> for me the commmon value "%K smooth" applies for StochK and StochD. both
> %K, %D lines change as you change "%K smooth" value under preferences.
>
> I recall now that some time ago I had similar problem with built-in
> price indicator. unfortunately, I can't find this message now but I
> belive this behaviour is the same by nature. AFL Stoch code with "custom
> flag light" uses default values for StochK and StochD instead of
> preferenced when used as built-in code. the latter one becomes more
> united with AB internal structure, if I can say that way..
>
> cheers,
> BM
>
>
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