Re: [amibroker] help with ref()

[Graham <kavemanperth@xxxxxxxxx>]

You cannot use ref(X, -Barcount) as this is looking beyond the start
of the data.
last bar is barcount, so barcount-barcount = 0 which does not exist as
barcount starts counting at 1
to get the value of first bar from the last bar of the data use Ref(X,
-(Barcount-1) )
Just remember this will only give a value for the last bar of the chart

Also as already mentioned include the setbarsrequired function

-- 
Cheers
Graham
AB-Write >< Professional AFL Writing Service
Yes, I write AFL code to your requirements
http://www.aflwriting.com


On 07/04/07, Waleed Khalil <waleedkhalil@xxxxxxxxx> wrote:
> Thanks Ara for the fast reply
> i did that also and i still get zero
> the issue is that i need to get the first date in the chart and then get
> the close for the same day for the Foreign stock
>
> SetBarsRequired(100000, 0);
> case30=Foreign ("case30","close ");
> Case30basevalue= Ref (Foreign ("case30","close "), -BarCount);
> Title = "  BarCount = " + BarCount + "Case30basevalue =" +Case30basevalue  ;
>
>
>
> Ara Kaloustian wrote:
> >
> > Barcount is the last available data loaded, so when you ask for data
> > prior
> > to Barcount bars, there is no data.
> >
> > If you want to load entire data set use
> >
> > SetBarsRequired(1000000,0); at top of program and use a different way of
> > asking for data other than Barcount bars ago
> >
> > This may slow down program.
> >
> > ----- Original Message -----
> > From: "Waleed Khalil" <waleedkhalil@xxxxxxxxx
> > <mailto:waleedkhalil%40gawab.com>>
> > To: <amibroker@xxxxxxxxxxxxxxx <mailto:amibroker%40yahoogroups.com>>
> > Sent: Friday, April 06, 2007 2:27 PM
> > Subject: [amibroker] help with ref()
> >
> > > Hi all
> > > Please tell me why the Ref function does not get data more that 260 days
> > > ago,
> > > it returns zero for any period more than 260 days ago
> > >
> > > _SECTION_BEGIN("stockovercase");
> > > case30=Foreign ("case30","close ");
> > > Case30basevalue= Ref (Foreign ("case30","close "), -BarCount);
> > > Title = " BarCount = " + BarCount + "Case30basevalue ="
> > +Case30basevalue
> > > ;
> > > _SECTION_END();


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