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Hello,
In the e-mails you have pointed out there is NO MENTION
of Foreign with Fixup = False therefore it is not the issue Mr Perrin pointed out.
You were making false assumption that ATC should give you the same
results as getcategorysymbols technique used in the example code from the User's Guide.
Both techniques are different, and they perform different calculations (one does not pad
the data the other one pads) hence results are different.
It does not make one or another method invalid. Both are valid - they just use different
methods for averaging. Choosing one of them is a matter of individual preference.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "DIMITRIS TSOKAKIS" <TSOKAKIS@xxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Sunday, February 29, 2004 11:49 PM
Subject: [amibroker] Re: The reason
> Tomasz,
> FYI
> there were 3 messages on the subject
> http://groups.yahoo.com/group/amibroker/message/55882, Jan1, 2004
> http://groups.yahoo.com/group/amibroker/message/55943, Jan2, 2004
> http://groups.yahoo.com/group/amibroker/message/56227, Jan6, 2004
> [When we don't know if it is a bug or not, it doesn't make sense to
> send our questions at bugreports]
> Dimitris Tsokakis
> --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <amibroker@xxxx>
> wrote:
> > Hello,
> >
> > Actually the problem was reported earlier (in January 29, 2004 ) by
> Mr. Andrew Jones-Perrin
> > directly to me (bugs @ amibroker.com) so it was on to-do list
> already.
> >
> > Best regards,
> > Tomasz Janeczko
> > amibroker.com
> > ----- Original Message -----
> > From: "Anthony Faragasso" <ajf1111@xxxx>
> > To: <amibroker@xxxxxxxxxxxxxxx>
> > Sent: Sunday, February 29, 2004 12:35 PM
> > Subject: Re: [amibroker] Re: The reason
> >
> >
> > > Dimitri,
> > >
> > > Well done...I am sure all of us in Amibroker community wish to
> thank you for
> > > patience and staying the course...thereby...helping Tomasz to see
> the
> > > solution that is needed.
> > >
> > > Also, Thank you Tomasz..
> > >
> > > Anthony
> > >
> > > ----- Original Message -----
> > > From: "DIMITRIS TSOKAKIS" <TSOKAKIS@xxxx>
> > > To: <amibroker@xxxxxxxxxxxxxxx>
> > > Sent: Sunday, February 29, 2004 5:21 AM
> > > Subject: [amibroker] Re: The reason
> > >
> > >
> > > > Tomasz,
> > > > Well, this is good news !
> > > > Now, if we suppose AAPL is missing the last 5 quotations, then
> the
> > > > graph of
> > > > f=Foreign("AAPL","C",0);
> > > > Plot(f,"F",1,1);
> > > > is wrong.
> > > > We could have the correct graph NOW[before the 4.52
> version],with
> > > > G=IIf(IsNull(Ref(f,-1)),Null,F);
> > > > Plot(G,"G",4,8);
> > > > But this correction is not enough for the CategoryGetSymbols()
> > > > example in the 4.50 users guide. The use of i in the last
> division
> > > > return Average / i;
> > > > is also wrong, i counts the names of the WL [the elements of the
> > > > comma separated string] and does not give the daily population
> of
> > > > the WL.
> > > > I hope it is clear now, the discussion was a bit boring for the
> > > > readers but, never mind.
> > > > The best solution for any user is to spend some time and fill
> the
> > > > holes of his/her database.
> > > > Dimitris Tsokakis
> > > >
> > > > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko"
> <amibroker@xxxx>
> > > > wrote:
> > > > > Hello,
> > > > >
> > > > > Your descriptions were unclear to me unfortunatelly and I was
> not
> > > > able to see your point.
> > > > > As for D2/D4 values they are copies of last valid data point
> but
> > > > they indeed should be Null as well
> > > > > when fixup is set to False (0). This issue will be addressed
> in
> > > > version 4.52.
> > > > >
> > > > > Best regards,
> > > > > Tomasz Janeczko
> > > > > amibroker.com
> > > > > ----- Original Message -----
> > > > > From: "DIMITRIS TSOKAKIS" <TSOKAKIS@xxxx>
> > > > > To: <amibroker@xxxxxxxxxxxxxxx>
> > > > > Sent: Saturday, February 28, 2004 10:06 PM
> > > > > Subject: [amibroker] Re: The reason
> > > > >
> > > > >
> > > > > > Tomasz,
> > > > > > How do you explain D2=22.47 ?
> > > > > > How do you explain D4=22.47 ?
> > > > > > All D1 to D5 should be {empty}, since the last 5 AAPL
> quotations
> > > > are
> > > > > > deleted.
> > > > > > The above D2, D4 are totally absurd.
> > > > > > Just curious, don't you see it ??
> > > > > > fixup=0 does not work as described, a value equal to the
> last
> > > > > > available pops up every 2nd bar [!!!!!]
> > > > > > Dimitris Tsokakis
> > > > > > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko"
> > > > <amibroker@xxxx>
> > > > > > wrote:
> > > > > > > Dimitris,
> > > > > > >
> > > > > > > It explained in the User's Guide:
> http://www.amibroker.com/f?
> > > > foreign
> > > > > > >
> > > > > > > "The last parameter - fixup - accepts following values
> > > > > > > a.. 1 - default value - causes filling the holes in the
> data
> > > > with
> > > > > > previous values,
> > > > > > > b.. 0 - the holes are not fixed
> > > > > > > [..]
> > > > > > > If you do not use fixup=True, data holes will have the
> value of
> > > > > > Null [..]"
> > > > > > >
> > > > > > > Null is the other name for {EMPTY}.
> > > > > > >
> > > > > > > Best regards,
> > > > > > > Tomasz Janeczko
> > > > > > > amibroker.com
> > > > > > > ----- Original Message -----
> > > > > > > From: Dimitris Tsokakis
> > > > > > > To: amibroker@xxxxxxxxxxxxxxx
> > > > > > > Sent: Saturday, February 28, 2004 3:49 PM
> > > > > > > Subject: [amibroker] The reason
> > > > > > >
> > > > > > >
> > > > > > > is the peculiar result of Foreign("AAPL","C",0);
> > > > > > > I deleted the last 5 bars and here is the plot of
> > > > > > > Plot(Foreign("AAPL","C",0),"",1,8);
> > > > > > >
> > > > > > > The last 6 dots are
> > > > > > >
> > > > > > > D0= 22.47
> > > > > > >
> > > > > > > D1= {EMPTY}
> > > > > > >
> > > > > > > D2= 22.47
> > > > > > >
> > > > > > > D3={EMPTY}
> > > > > > >
> > > > > > > D4= 22.47
> > > > > > >
> > > > > > > D5={EMPTY}
> > > > > > >
> > > > > > > There is no explanation for D2, D4, AAPL values were
> {EMPTY}
> > > > for
> > > > > > these dates.
> > > > > > >
> > > > > > > Am I missing something ?
> > > > > > >
> > > > > > > Dimitris Tsokakis
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
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