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See the user guide for an explanation:
http://www.amibroker.com/guide/h_understandafl.html
Mike
--- In amibroker@xxxxxxxxxxxxxxx, "sidhartha70" <sidhartha70@xxx>
wrote:
>
> Hi Tomasz,
>
> Thanks for answers to previous questions.
>
> I have a general question which keeps getting me confused. I come
from
> the world of C# and I find myself always thinking about processing
> array elements in the form Array[x] and carrying out calculations
> across arrays in that form. Obviously you don't often need to do
this
> with AFL.
>
> However, couple of things. If I am using a formula where the
currently
> calculated value of the array uses it's value 1 bar ago, of the form
> in traditional C#,
>
> Array[x]=100*Array[x-1]
>
> for example.
>
> How do I reference the x-1 value of an array in AFL...? The reason I
> ask is, previously I have used the BarCount-1 property (thinking
that
> processing must be happening at the current bar i.e. RHS of chart).
> However, I noticed that when I moved the 'selector' line it changed
> the value fo BarCount to where ever that line was... hence my
forumlas
> ended up all wrong.
>
> I'm sure there's a penny going to drop any minute here... and I'm
> going to make the transition from C# to AFL.
>
> Can you help...?
>
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