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Hi I will attempt to explain what I can, but firstly if the code
contains jscript then you must have an old version. I have reworked
the PF code to native AFL loops and you can find this in AFL library
on AB site. Using Jscript was the original method to use looping in
AFL.
PFO and PFC are intermediate variables allowing for the value of close
price (PFC) to be calculated within the loop. PFO is just 1 box size
behind PFC.
Delta allows for the number of final columns of the PF chart to be
moved to the right end of the background bar chart. It is not possible
to change the X axis on the charts which always remain the same number
of bars as the underlying symbol data.
In the plot I use basic prices, but you may notice the OHLC have been
re-assigned values as calculated from PFO & PFC.
Yes, have a look at what I produced and placed on AB site
http://www.amibroker.com/library/detail.php?id=348
there are also some older versions, just search the library for P&F
On Sun, 20 Feb 2005 14:45:18 -0000, the_short_fox
<amiteh@xxxxxxxxxxxxxxxxx> wrote:
>
>
> Hi Graham et al,
>
> As a programmer in a different language, who's a new AmiBroker user,
> I would be thankful if you provide some commentary (here), with
> regards to variables/declarations in the P&F code published by you.
> This way, I hope I'll be able to learn AFL better. Would you mind if
> I ask several questions?
>
> (i) what do PFO and PFC arrays represent?
> (ii) what does delta variable represent?
> (iii) what is Jscript and why is it being used?
> (iv) In the "Plot" function, why is C array used for plotting? As
> far as I understand (I guess I don't, currently) C stands for the
> closing prices of "regular" time-interval bars (daily/weekly/monthly
> etc), not P&F columns (which are time independent). I would be happy
> if you can clarify a little.
> (v) Last question, if you won't mind: is there any way to construct
> a type/record in AmiBroker? i.e, a single varibale that contains
> several sub-variables. I specifically refer to something like this:
>
> Type Column=record
> // Storing information for every 'X' or 'O' column
> // Assuming a maximum of 200 boxes per column
> Sort: integer; // 'X' ---> 1 ; 'O' ---> 0
> MaxPFValue: float; // Highest price for the column (P&F
> perspective)
> MinPFValue: float; // Lowest price for the column (P&F perspective)
> First: integer; // Starting date for the whole column
> Last: integer; // Ending date for the whole column
> end;
>
> As a programmer that is (still) unfamiliar with the synthax of AFL,
> I take this opportunity to thank you in advance for any assistance.
>
> Short.
>
>
> Check AmiBroker web page at:
> http://www.amibroker.com/
>
> Check group FAQ at: http://groups.yahoo.com/group/amibroker/files/groupfaq.html
> Yahoo! Groups Links
>
>
>
>
>
--
Cheers
Graham
http://e-wire.net.au/~eb_kavan/
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