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Steve, I am glad I was polite :-)
I think I know what you are after, possibly
Do you want a box size of 2% of the price value, or the box size ?
I have tried to make a dynamic box sizing and the only way I can think of is
to throw out the need for actual price on the Y axis. I did this to a small
degree with the Vbox series, but only in part. If you break down the box
sizing to an array in its own merit, then plot the Y axis as number of
boxes. It is not possible to alter the Y axis in AB so it is not possible to
have something that does not conform with that which it is capable
I would do it by converting the price to boxes, allowing the box size to
change with the price. Bit like a dog chasing its tail. This I think would
need to be done in a loop as each new value is dependant on the resultant of
the previous
Eg to show the flow path only
Box[1] = 0.02*C[1]
C[2] = C[1] + Box[1]
Box[2] = C[2] + Box[2]
Etc
You would then end up with a set of arrays Box[k] and C[k]. The original C[
i ] would not be used
The [k] arrays would then be used as input to creating the P&F chart which
would become the PFO[J] and PFC[J] per my codes.
Chances are the Y axis will be just a set of numbers that would need to be
converted if you need to know the prices, pssibly just in the Title of the
chart, or maybe Interpretation window might be best. It becomes reverse
mathematics to get this.
I won't have time to do this as I am busy working on a few other projects of
my own, sorry. Good luck. Maybe someone else with a bit more savvy in
programming could do this with one hand tied behind their back :-)
Al, I can say is I wish I was smart enough to have written the original code
for the P&F chart in AB, I just got it working to some degree.
Cheers,
Graham
http://groups.msn.com/ASXShareTrading
http://groups.msn.com/FMSAustralia
-----Original Message-----
From: steve_almond [mailto:steve2@xxxxxxxxxxxxxxxxxxxx]
Sent: Thursday, 12 June 2003 3:50 PM
To: amibroker@xxxxxxxxxxxxxxx
Subject: [amibroker] Re: Graham Kavanagh - - P&F?
Graham,
I've mentioned this before, and you made some (polite) suggestions,
but I'm not savvy enough to implement this myself: Is it possible to
modify your P&F programme to use a box size of 2% (log scale). In
other words each box is 1.02*previous box? I know there
are "starting" difficulties with log scaling - hence some commercial
P&F packages give different box values depending where their "base"
box starts.
Any thoughts?
Steve
--- In amibroker@xxxxxxxxxxxxxxx, "Graham" <gkavanagh@xxxx> wrote:
> aequalsz
> I have read the Dorsey book too, and some others
> I also used the following websites as assistance for use of P&F
> http://members.ozemail.com.au/~sarcher/
>
http://www.stockcharts.com/education/How/AnalysisTools/pnfCharts.html
> Plus a few others
> One thing I note about most references is that they use the HiLo
P&F, with
> the box size varying according to the price range. My basic P&F
for both
> Close prices and HiLo is sizing the box on the last range of
prices, and
> assign that box size to all the chart. I have produced a PF that
has
> variable box sizes according to the price ranges, but it can be
hard to use
> as it needs to be broken into the number of boxes on the Yaxis.
You need to
> convert this back to prices, although I have done that in the
title of the
> chart for a selected column. This has the file name incorporating
Vbox in
> it, not certain if it is on the yahoo or AB websites, but I
believe I did
> send a version of it to my website.
>
> Not certain what you mean by Brand of P&F.
>
> Cheers,
> Graham
> http://groups.msn.com/ASXShareTrading
> http://groups.msn.com/FMSAustralia
>
>
> -----Original Message-----
> From: aequalsz [mailto:aequalsz@x...]
> Sent: Thursday, 12 June 2003 9:26 AM
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: [amibroker] Re: Graham Kavanagh - - P&F?
>
>
> Graham,
>
> Thoroughly checked your code and was impressed by your efforts -
> although I did make a few superficial mods. Don't actually know
> much about P&F charts so I checked out "Point & Figure Charting"
by
> Thomas J. Dorsey and from that book was able to better understand
> the P&F method. I decided to follow his methodology, at least as
> closely as I could. Also was wondering what "brand" of P&F you use
> or what references do you use? Thanks again for the code and for
> your help.
>
> a
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Graham" <gkavanagh@xxxx> wrote:
> > Mike
> > 1. I have not found any bugs in the latest Beta version.
> > If you instal the beta version it only updates the operating
> files, not any
> > of your settings, afls etc. At least I have had no problems 2.
Your
> > choice to use latest or not. I changed it as my earlier
> versions
> > were set around a price scale in cents. The new is in dollars.
3. I
> > won't comment on other software. My P&F works well enough for
> me. But
> > because the charts can be based on different factors including
box
> size &
> > method of sizing, reversal amount and style, what price (HiLo or
> Close). I
> > made every endeavour for the PF chart to be correct. If you find
> an error
> > within the formula let me know.
> >
> >
> > Cheers,
> > Graham
> > http://groups.msn.com/ASXShareTrading
> > http://groups.msn.com/FMSAustralia
> >
> >
> > -----Original Message-----
> > From: mroman59 [mailto:mroman59@x...]
> > Sent: Thursday, 12 June 2003 8:50 AM
> > To: amibroker@xxxxxxxxxxxxxxx
> > Subject: [amibroker] Graham Kavanagh - - P&F?
> >
> >
> > Graham
> >
> > I was using an earlier version of P&F in 4.30. I know that I need
> I
> > get V4.38 to use your most recent version of P&F.
> >
> > Questions:
> >
> > 1. V4.38 is beta version, since it is beta are there any bugs
> still
> > in the program and if we download it will it overwrite 4.30.
Could
> > we be asking for technical problems by using 4.38?
> >
> > 2. Since your previous version of P&F works in 4.30, then why
> would
> > we want to use your latest version of P&F?
> >
> > 3. I compared your P&F chart to another program on the web for
> P&F,
> > for various stocks. The patterns were not close in appearance.
> While
> > I know that P&F can vary in its programing to meet the users
> needs,
> > just like using a different MA, shouldn't patterns look similar
to
> > some degree.
> >
> > The website I was looking at is www.jcharts.com. Just click on
> > member icon, entry is free. Then you have an option to put in
your
> > stock of interest. After that, you can use a drop down menu to
> > choose the chart style.
> >
> > If you have time and don't mind looking, I would appreciate it.
> >
> > Thanks
> > Your aways a big help
> > Mike
> >
> >
> >
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