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Hi, Mike,
Thank you for the idea. Here is my usage:
// var tradeProfit; // declare variable for future use
Buy = longEntry and ValueWhen(Sell, tradeProfit) < 0;
Sell = LongExit;
tradeProfit = ValueWhen(Sell, SellPrice) - ValueWhen(Buy, BuyPrice);
May be you idea about setting to Close will work. When I tried to
initialize tradeProfit array with 0, it didn't return correct value
in ValueWhen() function: allways 0.
Thanks,
Mike
--- In amibroker@xxxx, Mike Pham <mmqp@xxxx> wrote:
> without much knowing of your usages; I would think
> you could always create a dummy array and use it on
> the right side of the formula.
>
> dummy = Close; // this is to create the dummy array
> and initialize them with close datas.
>
> ABformula = dummy;
>
> regards.
> --- mik954 <mik-u@xxxx> wrote:
> > Tomasz,
> >
> > Thank you for the links describing AFL arrays.
> >
> > But I still don't know how I can benefit from
> > AMA/AMA2 functions to
> > fix my problem.
> >
> > The problem is how to obtain a value from an array
> > using ValueWhen()
> > function (on the right side of the formula) before
> > setting/defining
> > this array on the left side of the formala.
> >
> > In Excel I don't need to declare any rows/columns:
> > they are all
> > predefined. Therefore I can use any new row/column
> > on the left and
> > right side of the formula at any time.
> >
> > As I understand in AFL I CANNOT use an array on the
> > right side of the
> > formula before using it on the left side.. That's my
> > PROBLEM.
> >
> > A simle fix would be using some kind of declaration
> > (var for example,
> > like in VB/JS Script) to allow using of array on the
> > right side of
> > the formula.
> >
> > Thanks,
> > Mike
> >
> >
> >
> >
> >
> > --- In amibroker@xxxx, "Tomasz Janeczko"
> > <amibroker@xxxx> wrote:
> > > Mike,
> > >
> > > There are numerous possibilities to reference
> > previous value of the
> > indicator or any array.
> > > Please check out
> > http://www.amibroker.net/boards/viewtopic.php?t=81
> > for the details.
> > >
> > > Best regards,
> > > Tomasz Janeczko
> > > amibroker.com
> > > ----- Original Message -----
> > > From: "mik954" <mik-u@xxxx>
> > > To: <amibroker@xxxx>
> > > Sent: Tuesday, April 23, 2002 2:15 AM
> > > Subject: [amibroker] Re: Declare variable for
> > future use: No way in
> > AFL?
> > >
> > >
> > > > Tomasz,
> > > >
> > > > You mean that I cannot use REF() function to get
> > a previous
> > element
> > > > of an ARRAY mentioned later in the code?
> > > >
> > > > So in AFL there is no way to use a previous
> > value of a variable
> > to
> > > > define its new value? What a disappointment. Is
> > there any
> > workaround?
> > > >
> > > > Thanks,
> > > > Mike
> > > >
> > > >
> > > > --- In amibroker@xxxx, "Tomasz Janeczko"
> > <amibroker@xxxx> wrote:
> > > > > Mike,
> > > > >
> > > > > No, AFL operates on entire arrays and it uses
> > only single-pass
> > to
> > > > process all bars.
> > > > > So if you assign a value later in your code it
> > will have no
> > effect
> > > > on any lines that appeared
> > > > > before.
> > > > >
> > > > > Best regards,
> > > > > Tomasz Janeczko
> > > > > amibroker.com
> > > > > ----- Original Message -----
> > > > > From: "mik954" <mik-u@xxxx>
> > > > > To: <amibroker@xxxx>
> > > > > Sent: Monday, April 22, 2002 6:13 PM
> > > > > Subject: [amibroker] Declare variable for
> > future use (was TJ:
> > > > Actual trade profit vs. Theoretical)
> > > > >
> > > > >
> > > > > > Hi, all!
> > > > > >
> > > > > > Well, so far no any response on my initial
> > post (even on
> > direct e-
> > > > > > mail to support@xxxx). It's weird. Maybe my
> > question wasn't
> > > > > > clear, or Tomasz was too busy.
> > > > > >
> > > > > > OK, let me ask in a different way. Is there
> > any way in AFL to
> > > > declare
> > > > > > variable/array and use its previos value
> > before setting
> > current
> > > > one?
> > > > > >
> > > > > > I mean:
> > > > > >
> > > > > > // var tradeProfit; // declare variable for
> > future use
> > > > > >
> > > > > > Buy = longEntry and ValueWhen(Sell,
> > tradeProfit) < 0;
> > > > > > Sell = LongExit;
> > > > > >
> > > > > > tradeProfit = ValueWhen(Sell, SellPrice) -
> > ValueWhen(Buy,
> > > > BuyPrice);
> > > > > >
> > > > > >
> > > > > > Any suggestions are welcome.
> > > > > >
> > > > > > Thanks,
> > > > > > Mike
> > > > > >
> > > > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > Your use of Yahoo! Groups is subject to
> > http://docs.yahoo.com/info/terms/
> > > >
> > > >
> > > >
> >
> >
>
>
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