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The operative phrase here was "...at least not directly", as in the
expectation that Ref(Value1, -1) would somehow be updating as a
result of calculating new values for Value1 { from the original post:
Value1=Ref(Value1,-1)+Value2 }
The poster correctly concluded that it doesn't work that way.
Mike
--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx>
wrote:
>
> >> The bottom line it seems is that you cannot recursively alter the
> >> value of any array by referencing other values of that array...
at
> >> least not directly.
>
> Of course that you CAN.
>
> Recursion needs either:
> a) a loop
>
> Value1=0;
> Value2=log(Close);
> for( i = 1; i < BarCount; i++ )
> Value1[ i ] = Value1[ i -1 ] + Value2[ i ];
>
> b) or AMA / AMA2 http://www.amibroker.com/f?ama
> Value1 = AMA2( Value2, 1, 1 );
>
> c) or CUM (this one is limited to simple "cumulation" while above
two are universal)
> Value1 = Cum( Value2 );
>
> A must read:
> http://www.amibroker.com/guide/h_understandafl.html
>
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "Mike" <sfclimbers@xxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Thursday, May 22, 2008 10:32 PM
> Subject: [amibroker] Re: General query about cumulating values for
indicators
>
>
> > Nope, you're not alone.
> >
> > The topic pops up, in one form or another, every couple of weeks
or
> > so. Sounds like you understand the concept now.
> >
> > Good luck.
> >
> > Mike
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "sidhartha70" <sidhartha70@>
> > wrote:
> >>
> >> Thanks Mike.
> >>
> >> So it seems I'm not the only one coming from more 'traditional'
> >> languages to struggle with this concept.
> >>
> >> The bottom line it seems is that you cannot recursively alter the
> >> value of any array by referencing other values of that array...
at
> >> least not directly.
> >>
> >>
> >> --- In amibroker@xxxxxxxxxxxxxxx, "Mike" <sfclimbers@> wrote:
> >> >
> >> > Read thread #122034 for a similar discussion, including
> > explanation.
> >> >
> >> > Mike
> >> >
> >> > --- In amibroker@xxxxxxxxxxxxxxx, "sidhartha70" <sidhartha70@>
> >> > wrote:
> >> > >
> >> > > Hi All,
> >> > >
> >> > > Can someone clear this up for me... I am simply trying to
> > cumulate
> >> > the
> >> > > value of an array. My intial thoughts were to do something
like
> > the
> >> > > following,
> >> > >
> >> > > Value1=0;
> >> > > Value2=log(Close);
> >> > > Value1=Ref(Value1,-1)+Value2;
> >> > >
> >> > > However, that doesn't seem to work... So I've ended up with,
> >> > >
> >> > > Value2=log(Close);
> >> > > Value1=Cum(Value2);
> >> > >
> >> > > Which does seem to work. I can't see why the first doesn't.
> >> > >
> >> > > Can anyone explain...? Thanks
> >> > >
> >> >
> >>
> >
> >
> >
> > ------------------------------------
> >
> > Please note that this group is for discussion between users only.
> >
> > To get support from AmiBroker please send an e-mail directly to
> > SUPPORT {at} amibroker.com
> >
> > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> > http://www.amibroker.com/devlog/
> >
> > For other support material please check also:
> > http://www.amibroker.com/support.html
> > Yahoo! Groups Links
> >
> >
> >
>
------------------------------------
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