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You are right to make these observations ... I present here parts of a
thread that address this type of thought:
From: Civengine
Date: Wed Aug 29, 2001 10:01 pm
Subject: Chartcraft vs. Log
I've been studying PnF for about 2 years now. I
decided that I wanted to write down my understanding of
PnF into a journal so that I could read it later to
make sure I made sense. Anyway, as I was reviewing
some of my journal and comparing different grids for
displaying charts, I decided that there is a serious flaw in
the classic Chartcraft method because the method will
emphasize price changes at some dollar values compared to
others.<br><br>For example, when a stock hits $20, it takes a 5%
move to change 1 box. By $33, it takes 4%, $40 3%, and
$66 2%. As the stock price increases, the volatility
of PnF charts will increase. On the other hand, Log
charts retain the same volatility "IN
THEORY".<br><br>I'd like to hear others' takes on this situation.
From: texicard
Date: Thu Aug 30, 2001 10:37 am
Subject: Re: Chartcraft vs. Log
There is a discussion relating to this in John
Bollinger's new book "Bollinger on Bollinger Bands". He
discusses it in terms of the variability in percentages to
show reversals due to the changes in box size. His
answer to smoothly specifying box size is to use
"Bollinger Boxes" which in simple terms are defined as 17
per cent of the square root of the most recent price.
This was apparently determined by analyzing all known
box size methods to come up with an ideal box size.
He also cites Technifilter as one computer program
that allows the boxes to be specified in this way. See
chapter 11, Five Point Patterns, of his book for a
complete discussion.
I don't know if this helps ... but feel free to look into it more.
Peter
-----Original Message-----
From: Richard Alford [mailto:richard.alford@x...]
Sent: Friday, July 19, 2002 5:23 PM
To: amibroker@xxxxxxxxxxxxxxx
Subject: Re: [amibroker] Re: Point & Figure Chart in AFL
Much thanks! I understand PnF are interpreted just as ohlc charts.
Probably having a consistent scaling it important. My initial impression is
that the box size should relate to the volatility, however, until I think
about it further I will happily defer to the tradition and the experience.
Cheers,
Richard
----- Original Message -----
From: bluesinvestor
To: amibroker@xxxxxxxxxxxxxxx
Sent: Friday, July 19, 2002 4:11 PM
Subject: RE: [amibroker] Re: Point & Figure Chart in AFL
Richard,
>From http://stockcharts.com/education/How/AnalysisTools/pnfCharts.html:
Traditional box scaling preloads box sizes historically used for that
particular price range. The reversal amount starts at 2 (this should be 3),
but can be adjusted dynamically. Here are the traditional box sizes used in
our charts:
Price Range Box Size
Under $0.25 .0625
.26 to 1.00 .125
1.01 to 5.00 .25
5.01 to 20.00 .50
20.01 to 100.00 1.00
100.01 to 200.00 2.00
200.01 to 500.00 4.00
500.01 to 1,000.00 5.00
1,000.01 to 25,000.00 50.00
25,000.01 and up 500.00
The traditional scaling in PnF.dll only uses .25 (less than $5) up to 2
(greater than $100) because I have been a student of Dorsey Wright long
before StockCharts came along, but the DLL can change when and if needed.
Plus you have the ability to use your own boxsize in the DLL.
Peter
-----Original Message-----
From: Richard Alford [mailto:richard.alford@x...]
Sent: Friday, July 19, 2002 4:59 PM
To: amibroker@xxxxxxxxxxxxxxx
Subject: Re: [amibroker] Re: Point & Figure Chart in AFL
Looks great, Peter. Can you elaborate on what is meant by the
traditional scaling? "x = Boxsize (use '0' for traditional scaling)or
provide a reference. I was checking out Kaufman and I couldn't find a
recommended box size.
Thanks,
Richard
----- Original Message -----
From: bluesinvestor
To: amibroker@xxxxxxxxxxxxxxx
Sent: Friday, July 19, 2002 3:29 PM
Subject: RE: [amibroker] Re: Point & Figure Chart in AFL
Forgot to mention:
http://groups.yahoo.com/group/amibroker/message/17288
For PnF.dll information.
Peter
-----Original Message-----
From: bluesinvestor [mailto:investor@x...]
Sent: Friday, July 19, 2002 4:23 PM
To: amibroker@xxxxxxxxxxxxxxx
Subject: RE: [amibroker] Re: Point & Figure Chart in AFL
Hello Mirat,
Good stuff!! I made some modifications to your code to call my
Point & Figure DLL and plot the data using your jscript code. I tested it
on one stock (PYPL - short history) and it looks correct (except for the
beginning bars:
I have attached the AFL to this email (and posted below for Yahoo
viewers).
Thanks again,
Peter
// PF Chart by Mirat Dave
// Copy and paste this as a custom indicator.
x=calcPnF(0,3);
EnableScript("jscript");
<%
PnFValue = VBArray( AFL( "PnFVal" ) ).toArray();
PnFColumn = VBArray( AFL( "PnFCol" ) ).toArray();
// Calculate running average stock price for use in calculating
the Box size.
PFO = new Array();
PFC = new Array();
// initialize first element
j = 0;
PFO[j] = PnFValue[0];
PFC[j] = PnFValue[0];
// perform the loop that produces PF Chart
for( i = 1; i < PnFValue.length; i++ )
{
if ( PnFColumn[i] == 0 )
{
if( PnFColumn[i] == 0 && PnFColumn[i-1] == 0)
{
PFC[j] = PnFValue[i];
}
if( PnFColumn[i] == 0 && PnFColumn[i-1] != 0 )
{
j++;
PFC[j] = PnFValue[i];
PFO[j] = PnFValue[i-1];
}
}
else
{
if (PnFColumn[i] == 1)
{
if( PnFColumn[i] == 1 && PnFColumn[i-1] == 1 )
{
PFC[j] = PnFValue[i];
}
if( PnFColumn[i] == 1 && PnFColumn[i-1] != 1 )
{
j++;
PFO[j] = PnFValue[i-1];
PFC[j] = PnFValue[i];
}
}
}
}
// Shift chart to the right to eliminate trailing empty data
// - PF charts are generally smaller/shorter then the full stock
charts because they lack a time scale.
delta = PnFValue.length - PFO.length;
for( i = PnFValue.length; i > delta; i-- )
{
PFO[ i-1 ] = PFO[ i-delta-1];
PFC[ i-1 ] = PFC[ i-delta-1];
}
for( i = 0; i < delta; i++)
{
PFO[ i-1 ] = 0;
PFC[ i-1 ] = 0;
}
AFL.Var("delta") = delta;
AFL.Var("length") = PnFValue.length;
AFL.Var("PFO") = PFO;
AFL.Var("PFC") = PFC;
%>
O = PFO;
C = PFC;
H = (O+C)/2;
L = (O+C)/2;
GraphXSpace = 9;
Graph0Style = 64;
Graph0Color =1;
Graph0 = C;
Filter=C>0;
AddColumn(PFO,"PFO");
AddColumn(PFC,"PFC");
-----Original Message-----
From: mirat_dave [mailto:mirat_dave@x...]
Sent: Friday, July 19, 2002 10:00 AM
To: amibroker@xxxxxxxxxxxxxxx
Subject: [amibroker] Re: Point & Figure Chart in AFL
Hello Richard and Dimitris,
Sorry to have caused so much confusion.
Since most stocks since 2000 have been trending down, you may get
a
only a few bars because the P&F Chart ignores small up moves and
only
extends down bars when the price moves more than the box size.
Since
2000, you may very well have only a few bars. Try loading more
data
for at least one stock.
I used AmiQuote and Yahoo for the data. I have data from January
1994. The AmiBroker version on which I created this file is 4.0.0
Apr 26 2002.
I do not know if the AmiBroker version is causing the difference.
I
saw that it worked for Richard on MSFT (although I am not sure
what
the whole MSFT v. MSFT issue was - it seems to have resolved
itself). Perhaps Richard also has more data loaded.
As you can see from the script, it is very simple. If problems
continue, I would be happy to go through it in detail to see if
there
is a coding error.
I'm afraid I have no other explanation other than more data.
Let's
try that first.
Mirat
PS I would post .gifs of my charts but I do not know how to
attach a
file to my reply. Although that would not help resolve the issue.
:-)
--- In amibroker@xxxx, "Richard Alford" <richard.alford@xxxx>
wrote:
> I am just isolating variables. If we have the same program and
version (4.06.1 Jun 19 build), the same indicator code (this I
confirmed) and same data we should get the same result. (I
continue
to believe in deterministic computing - probably naive in light of
Microsoft!). The questionable variable, and a big one, is the
data
source - I use qp2. Perhaps someone using yahoo could compare to
your results?
>
>
> It does appear that the "box size", the significant change that
defines an X or O in my understanding, should be normalized to the
price of the instrument to account for the difference in WCOME
pricing vs. DJIA, for example. I am referring to the code
fragment:
>
> // Calculate PF Chart Box size and minimum Reverse values
> // Box = ((tot[i]/(i+1))^.5)/7.3374;
>
> Cheers,
>
> Richard
> ----- Original Message -----
> From: dtsokakis
> To: amibroker@xxxx
> Sent: Wednesday, July 17, 2002 2:49 PM
> Subject: [amibroker] Re: Point & Figure Chart in AFL
>
>
> Richard,
> YHOO via Amiquote.
> Why do you think it is a matter of data provider ?
> Dimitris Tsokakis
>
> --- In amibroker@xxxx, "Richard Alford" <richard.alford@xxxx>
wrote:
> > but the point remains that you and I get different results.
what
> is your data source?
> >
> > Richard
> > ----- Original Message -----
> > From: dtsokakis
> > To: amibroker@xxxx
> > Sent: Wednesday, July 17, 2002 1:47 PM
> > Subject: [amibroker] Re: Point & Figure Chart in AFL
> >
> >
> > Richard,
> > ANY other function works just fine with my valuable
Amibroker
> 4.06.
> > Just fine.
> > I can not see the reason for this P&F script.
> > Anyway, the author perhaps could expain.
> > Dimitris Tsokakis
> >
> > --- In amibroker@xxxx, "Richard Alford"
<richard.alford@xxxx>
> wrote:
> > > DT, I agree it was not easy to understand. The attached
charts
> > showed the TWO results that were generated whenever I
entered
the
> > symbol MSFT - it appears to be a fluke and I cannot
reproduce
it
> any
> > longer. Although there is not ticker name in the formula,
there
> was
> > strange behavior occurring for MSFT and MSFT only at that
time.
> > >
> > > The gist of my reply to you was that using the SAME code
as
you
> > posted and using the code I copied from the files
sections, I
> > generated the same results - and not the results that you
were
> > creating. That suggests that you have a problem in your
data
> and/or
> > setup. The only reason for the two codes was to guarantee
that
> there
> > wasn't a subtle error - there was not.
> > >
> > > Sorry for adding the confusion about the MSFT fluke at
the
same
> > time.
> > >
> > > Cheers,
> > >
> > > Richard
> > > ----- Original Message -----
> > > From: dtsokakis
> > > To: amibroker@xxxx
> > > Sent: Wednesday, July 17, 2002 12:47 AM
> > > Subject: [amibroker] Re: Point & Figure Chart in AFL
> > >
> > >
> > > Richard,
> > > It is not easy to understand this
> > > "the plot for MSFT changes when one changes the symbol
go
> MSFT
> > from
> > > MSFT??? "
> > > I copied the formula from
> > >
http://groups.yahoo.com/group/amibroker/files/Point-Figure
> > > pasted in my Ind. builder and get the posted gifs.
> > > No ticker name is into the formula.
> > > What is "the two MSFT " ???
> > > Do you use the same code from the above address??
> > > DT
> > >
> > >
> > > --- In amibroker@xxxx, "Richard Alford"
<richard.alford@xxxx>
> > wrote:
> > > > Those are not the figures I generate using the code
in
> > the "files
> > > section". (Why wasn't this put in the AFL library is
a
> question
> > in
> > > my mind???)
> > > >
> > > > Just noticed that the plot for MSFT changes when one
> changes
> > the
> > > symbol go MSFT from MSFT??? Not the case for AMZN or
ORCL?
> > > >
> > > > I attached the two MSFT for comparison, one is "my"
copy,
> and
> > the
> > > other is a copy and paste of the code in your note.
The
> > difference
> > > is the quirk in MSFT, not an error in the code you
have
used.
> And
> > DT
> > > do you really like black on blue borders? Personally,
I
can
> > never
> > > read your chart titles.
> > > >
> > > > Cheers,
> > > >
> > > > Richard
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: Dimitris Tsokakis
> > > > To: amibroker@xxxx
> > > > Sent: Tuesday, July 16, 2002 1:14 PM
> > > > Subject: [amibroker] Re: Point & Figure Chart in
AFL
> > > >
> > > >
> > > > Mirat,
> > > > Here is P&F charts for AMZN, MSFT and ORCL.
> > > > Data since Jan 2000.
> > > > Is it the expected picture ?
> > > > The code, copied from files section
> > > >
> > > > // PF Chart by Mirat Dave
> > > > // Copy and paste this as a custom indicator.
> > > >
> > > > EnableScript("jscript");
> > > > <%
> > > >
> > > > High = VBArray( AFL( "High" ) ).toArray();
> > > > Low = VBArray( AFL( "Low" ) ).toArray();
> > > >
> > > > // Calculate running average stock price for use
in
> > calculating
> > > the Box size.
> > > >
> > > > tot = new Array();
> > > > tot[0] = (High[0] + Low[0])/2;
> > > > for( i=1; i < High.length; i++ )
> > > > {
> > > > tot[i] = tot[i-1] + ((High[i] + Low[i])/2);
> > > > }
> > > > PFO = new Array();
> > > > PFC = new Array();
> > > >
> > > > // initialize first element
> > > >
> > > > j = 0;
> > > > PFO[j] = High[0];
> > > > PFC[j] = Low[0];
> > > > down = 1; // By default the first bar is a down
bar.
> > > >
> > > > up = 0;
> > > > swap = 0;
> > > >
> > > > // perform the loop that produces PF Chart
> > > >
> > > > for( i = 1; i < High.length; i++ )
> > > > {
> > > > // Calculate PF Chart Box size and minimum Reverse
values
> > > >
> > > > Box = ((tot[i]/(i+1))^.5)/7.3374;
> > > > Reverse = Box * 3;
> > > > if( Low[i] < PFC[j] - Box && down)
> > > > {
> > > > PFC[j] = Low[i];
> > > > }
> > > > else
> > > > {
> > > > if( High[i] >= PFC[j] + Reverse && down)
> > > > {
> > > > j++;
> > > > swap = 1;
> > > > PFO[j] = Low[i];
> > > > PFC[j] = High[i];
> > > > }
> > > > }
> > > > if( High[i] > PFC[j] + Box && up)
> > > > {
> > > > PFC[j] = High[i];
> > > > }
> > > > else
> > > > {
> > > > if( Low[i] <= PFC[j] - Reverse && up)
> > > > {
> > > > j++;
> > > > PFC[j] = Low[i];
> > > > PFO[j] = High[i];
> > > > swap = 1;
> > > > }
> > > > }
> > > > if( swap )
> > > > {
> > > > swap = 0;
> > > > if( up )
> > > > {
> > > > up = 0;
> > > > down = 1;
> > > > }
> > > > else
> > > > {
> > > > up = 1;
> > > > down = 0;
> > > > }
> > > > }
> > > > }
> > > >
> > > > // Shift chart to the right to eliminate trailing
empty
> data
> > > > // - PF charts are generally smaller/shorter then
the
> full
> > stock
> > > charts because they lack a time scale.
> > > >
> > > > delta = High.length - PFO.length;
> > > > for( i = High.length; i > delta; i-- )
> > > > {
> > > > PFO[ i-1 ] = PFO[ i-delta-1];
> > > > PFC[ i-1 ] = PFC[ i-delta-1];
> > > > }
> > > > for( i = 0; i < delta; i++)
> > > > {
> > > > PFO[ i-1 ] = 0;
> > > > PFC[ i-1 ] = 0;
> > > > }
> > > > AFL.Var("PFO") = PFO;
> > > > AFL.Var("PFC") = PFC;
> > > > %>
> > > >
> > > > O = PFO;
> > > > C = PFC;
> > > >
> > > > H = (O+C)/2;
> > > > L = (O+C)/2;
> > > >
> > > > GraphXSpace = 9;
> > > > Graph0Style = 64;
> > > >
> > > > Graph0Color =1;
> > > > Graph0 = C;
> > > >
> > > > Thanks in advance for any reply.
> > > > Dimitris Tsokakis
> > > >
> > > > Yahoo! Groups Sponsor
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------=_NextPart_001_00AC_01C22F4A.72161390
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charset="iso-8859-1"
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<BODY bgColor=3D#ffffff>
<DIV><SPAN class=3D559263021-19072002><FONT face=3DArial color=3D#0000ff=20
size=3D2>Richard,</FONT></SPAN></DIV>
<DIV><SPAN class=3D559263021-19072002><FONT face=3DArial color=3D#0000ff=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D559263021-19072002><FONT face=3DArial color=3D#0000ff si=
ze=3D2>You=20
are right to make these observations ... I present here parts of a thread t=
hat=20
address this type of thought:</FONT></SPAN></DIV>
<DIV><SPAN class=3D559263021-19072002><FONT face=3DArial color=3D#0000ff=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D559263021-19072002><FONT face=3DArial color=3D#0000ff si=
ze=3D2>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"100%" border=3D0>
<TBODY>
<TR vAlign=3Dtop>
<TD vAlign=3Dtop width=3D"100%"><FONT size=3D+0><B>From:</B> Cive=
ngine=20
</FONT><BR><FONT size=3D+0><B>Date:</B> =20
Wed Aug 29, 2001 10:01 pm</FONT><BR><FONT=20
size=3D+0><B>Subject:</B> Chartcraft vs. Log</FONT></TD></TR>
<TR vAlign=3Dtop align=3Dleft>
<TD vAlign=3Dtop align=3Dleft width=3D"100%">
<TABLE cellPadding=3D10 align=3Dright>
<TBODY>
<TR>
<TD><!-- blank --></TD></TR></TBODY></TABLE><TT>
<DIV><BR>I've been studying PnF for about 2 years now. I<BR>decided t=
hat I=20
wanted to write down my understanding of<BR>PnF into a journal so tha=
t I=20
could read it later to<BR>make sure I made sense. Anyway, as I was=20
reviewing<BR>some of my journal and comparing different grids=20
for<BR>displaying charts, I decided that there is a serious flaw in<B=
R>the=20
classic Chartcraft method because the method will<BR>emphasize price=
=20
changes at some dollar values compared=20
to<BR>others.<br><br>For example, when a stock hits $20, =
it=20
takes a 5%<BR>move to change 1 box. By $33, it takes 4%, $40 3%,=20
and<BR>$66 2%. As the stock price increases, the volatility<BR>of PnF=
=20
charts will increase. On the other hand, Log<BR>charts retain the sam=
e=20
volatility "IN<BR>THEORY".<br><br>I'd like to hear others=
'=20
takes on this situation.<BR></DIV>
<DIV>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"100%" border=3D0>
<TBODY>
<TR vAlign=3Dtop>
<TD vAlign=3Dtop width=3D"100%"><FONT size=3D+0><B>From:</B> =
;=20
texicard </FONT><BR><FONT size=3D+0><B>Date:</B> =20
Thu Aug 30, 2001 10:37 am</FONT><BR><FONT=
=20
size=3D+0><B>Subject:</B> Re: Chartcraft vs. Log</FONT></=
TD></TR>
<TR vAlign=3Dtop align=3Dleft>
<TD vAlign=3Dtop align=3Dleft width=3D"100%"><TT><FONT face=3DAri=
al=20
color=3D#0000ff size=3D2></FONT><FONT face=3DArial color=3D#000=
0ff=20
size=3D2></FONT><BR>There is a discussion relating to this in=20
John<BR>Bollinger's new book "Bollinger on Bollinger Bands".=20
He<BR>discusses it in terms of the variability in percentages=20
to<BR>show reversals due to the changes in box size. His<BR>ans=
wer=20
to smoothly specifying box size is to use<BR>"Bollinger Boxes" =
which=20
in simple terms are defined as 17<BR>per cent of the square roo=
t of=20
the most recent price.<BR>This was apparently determined by=20
analyzing all known<BR>box size methods to come up with an idea=
l box=20
size.<BR>He also cites Technifilter as one computer program<BR>=
that=20
allows the boxes to be specified in this way. See<BR>chapter 11=
,=20
Five Point Patterns, of his book for a<BR>complete=20
discussion.<BR></TT></TD></TR></TBODY></TABLE></DIV>
<DIV></TT><FONT color=3D#0000ff size=3D2>I don't know if this helps .=
.. but=20
feel free to look into it more.</FONT></DIV>
<DIV><FONT color=3D#0000ff size=3D2></FONT> </DIV>
<DIV><SPAN class=3D559263021-19072002><FONT color=3D#0000ff=20
size=3D2>Peter</FONT></SPAN></DIV></TD></TR></TBODY></TABLE></FONT></=
SPAN></DIV>
<BLOCKQUOTE>
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT face=3DTah=
oma=20
size=3D2>-----Original Message-----<BR><B>From:</B> Richard Alford=20
[mailto:richard.alford@x...]<BR><B>Sent:</B> Friday, July 19, 2002 5:2=
3=20
PM<BR><B>To:</B> amibroker@xxxxxxxxxxxxxxx<BR><B>Subject:</B> Re: [amibro=
ker]=20
Re: Point & Figure Chart in AFL<BR><BR></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Much thanks! I understand PnF are=
=20
interpreted just as ohlc charts. Probably having a consistent scali=
ng it=20
important. My initial impression is that the box size should relate=
to=20
the volatility, however, until I think about it further I will happily de=
fer=20
to the tradition and the experience.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Cheers,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Richard</FONT></DIV>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-=
LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>F=
rom:</B>=20
<A title=3Dinvestor@xxxx=20
href=3D"mailto:investor@xxxx";>bluesinvestor</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A title=3Damibroker@xxxx=
oups.com=20
href=3D"mailto:amibroker@xxxxxxxxxxxxxxx";>amibroker@xxxxxxxxxxxxxxx</A>=
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Friday, July 19, 2002 4:11=
=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> RE: [amibroker] Re: Poi=
nt=20
& Figure Chart in AFL</DIV>
<DIV><BR></DIV>
<DIV><SPAN class=3D533150621-19072002><FONT face=3DArial color=3D#0000f=
f=20
size=3D2>Richard,</FONT></SPAN></DIV>
<DIV><SPAN class=3D533150621-19072002><FONT face=3DArial color=3D#0000f=
f=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D533150621-19072002><FONT face=3DArial color=3D#0000f=
f=20
size=3D2>From <A=20
href=3D"http://stockcharts.com/education/How/AnalysisTools/pnfCharts.ht=
ml">http://stockcharts.com/education/How/AnalysisTools/pnfCharts.html</A>:<=
/FONT></SPAN></DIV>
<DIV><SPAN class=3D533150621-19072002><FONT face=3DArial color=3D#0000f=
f=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D533150621-19072002><STRONG>Traditional box scaling</=
STRONG>=20
preloads box sizes historically used for that particular price range. T=
he=20
reversal amount starts at 2 (this should be 3), but can be adjusted=20
dynamically. Here are the traditional box sizes used in our=20
charts:<BR><BR></DIV>
<TABLE cellPadding=3D4 bgColor=3D#99ccff border=3D0>
<TBODY>
<TR>
<TD>
<TABLE cellPadding=3D1 border=3D0>
<TBODY>
<TR>
<TD><FONT face=3D"verdana, arial, sans-serif" size=3D-2><B>Pr=
ice=20
Range</B></FONT></TD>
<TD><FONT face=3D"verdana, arial, sans-serif" size=3D-2><B>Bo=
x=20
Size</B></FONT></TD></TR>
<TR>
<TD><FONT face=3D"verdana, arial, sans-serif" size=3D-2>Under=
=20
$0.25</FONT></TD>
<TD><FONT face=3D"verdana, arial, sans-serif"=20
size=3D-2>.0625</FONT></TD></TR>
<TR>
<TD><FONT face=3D"verdana, arial, sans-serif" size=3D-2>.26 t=
o=20
1.00</FONT></TD>
<TD><FONT face=3D"verdana, arial, sans-serif"=20
size=3D-2>.125</FONT></TD></TR>
<TR>
<TD><FONT face=3D"verdana, arial, sans-serif" size=3D-2>1.01 =
to=20
5.00</FONT></TD>
<TD><FONT face=3D"verdana, arial, sans-serif"=20
size=3D-2>.25</FONT></TD></TR>
<TR>
<TD><FONT face=3D"verdana, arial, sans-serif" size=3D-2>5.01 =
to=20
20.00</FONT></TD>
<TD><FONT face=3D"verdana, arial, sans-serif"=20
size=3D-2>.50</FONT></TD></TR>
<TR>
<TD><FONT face=3D"verdana, arial, sans-serif" size=3D-2>20.01=
to=20
100.00</FONT></TD>
<TD><FONT face=3D"verdana, arial, sans-serif"=20
size=3D-2>1.00</FONT></TD></TR>
<TR>
<TD><FONT face=3D"verdana, arial, sans-serif" size=3D-2>100.0=
1 to=20
200.00</FONT></TD>
<TD><FONT face=3D"verdana, arial, sans-serif"=20
size=3D-2>2.00</FONT></TD></TR>
<TR>
<TD><FONT face=3D"verdana, arial, sans-serif" size=3D-2>200.0=
1 to=20
500.00</FONT></TD>
<TD><FONT face=3D"verdana, arial, sans-serif"=20
size=3D-2>4.00</FONT></TD></TR>
<TR>
<TD><FONT face=3D"verdana, arial, sans-serif" size=3D-2>500.0=
1 to=20
1,000.00</FONT></TD>
<TD><FONT face=3D"verdana, arial, sans-serif"=20
size=3D-2>5.00</FONT></TD></TR>
<TR>
<TD><FONT face=3D"verdana, arial, sans-serif" size=3D-2>1,000=
.01 to=20
25,000.00 </FONT></TD>
<TD><FONT face=3D"verdana, arial, sans-serif"=20
size=3D-2>50.00</FONT></TD></TR>
<TR>
<TD><FONT face=3D"verdana, arial, sans-serif" size=3D-2>25,00=
0.01=20
and up</FONT></TD>
<TD><FONT face=3D"verdana, arial, sans-serif"=20
size=3D-2>500.00</FONT></TD></TR></TBODY></TABLE></TD></TR></=
TBODY></TABLE>
<DIV> </DIV>
<DIV><FONT face=3DArial><FONT color=3D#0000ff><FONT size=3D2>T<SPAN=20
class=3D533150621-19072002>he traditional scaling in PnF.dll only uses =
.25=20
(less than $5) up to 2 (greater than $100) because I have bee=
n a=20
student of Dorsey Wright long before StockCharts came along, but the DL=
L can=20
change when and if needed. Plus you have the ability to use your =
own=20
boxsize in the DLL.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT color=3D#0000ff><FONT size=3D2><SPAN=20
class=3D533150621-19072002></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face=3DArial><FONT color=3D#0000ff><FONT size=3D2><SPAN=20
class=3D533150621-19072002>Peter</SPAN></FONT></FONT></FONT></SPAN></DI=
V>
<BLOCKQUOTE>
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT face=
=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B> Richard Alford=20
[mailto:richard.alford@x...]<BR><B>Sent:</B> Friday, July 19, 2002=
4:59=20
PM<BR><B>To:</B> amibroker@xxxxxxxxxxxxxxx<BR><B>Subject:</B> Re:=20
[amibroker] Re: Point & Figure Chart in AFL<BR><BR></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Looks great, Peter. Can you el=
aborate=20
on what is meant by the traditional scaling? <FONT=20
face=3D"Courier New" size=3D3>"x =3D Boxsize (use '0' for traditional=
=20
scaling)</FONT></FONT><FONT size=3D+0><FONT face=3DArial size=3D2>or =
provide a=20
reference. I was checking out Kaufman and I couldn't find a=20
recommended box size.</FONT></FONT></DIV>
<DIV><FONT size=3D+0><FONT face=3DArial size=3D2></FONT></FONT> =
</DIV>
<DIV><FONT size=3D+0><FONT face=3DArial size=3D2>Thanks,</FONT></FONT=
></DIV>
<DIV><FONT size=3D+0><FONT face=3DArial size=3D2></FONT></FONT> =
</DIV>
<DIV><FONT size=3D+0><FONT face=3DArial size=3D2>Richard</FONT></DIV>
<DIV><FONT face=3DArial><BR><FONT size=3D2></FONT></FONT></DIV></FONT=
>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BOR=
DER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black">=
<B>From:</B>=20
<A title=3Dinvestor@xxxx=20
href=3D"mailto:investor@xxxx";>bluesinvestor</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20
title=3Damibroker@xxxxxxxxxxxxxxx=20
href=3D"mailto:amibroker@xxxxxxxxxxxxxxx";>amibroker@xxxxxxxxxxxxxxx=
</A>=20
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Friday, July 19, 2002 =
3:29=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> RE: [amibroker] Re:=
Point=20
& Figure Chart in AFL</DIV>
<DIV><BR></DIV>
<DIV><SPAN class=3D741082920-19072002><FONT face=3DArial color=3D#0=
000ff=20
size=3D2>Forgot to mention:</FONT></SPAN></DIV>
<DIV><SPAN class=3D741082920-19072002><FONT face=3DArial color=3D#0=
000ff=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D741082920-19072002><FONT face=3DArial color=3D#0=
000ff=20
size=3D2><A=20
href=3D"http://groups.yahoo.com/group/amibroker/message/17288";>http=
://groups.yahoo.com/group/amibroker/message/17288</A></FONT></SPAN></DIV>
<DIV><SPAN class=3D741082920-19072002><FONT face=3DArial color=3D#0=
000ff=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D741082920-19072002><FONT face=3DArial color=3D#0=
000ff=20
size=3D2>For PnF.dll information.</FONT></SPAN></DIV>
<DIV><SPAN class=3D741082920-19072002><FONT face=3DArial color=3D#0=
000ff=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D741082920-19072002><FONT face=3DArial color=3D#0=
000ff=20
size=3D2>Peter</FONT></SPAN></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT fa=
ce=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B> bluesinvestor=
=20
[mailto:investor@x...]<BR><B>Sent:</B> Friday, July 19, =
2002=20
4:23 PM<BR><B>To:</B> <A=20
href=3D"mailto:amibroker@xxxxxxxxxxxxxxx";>amibroker@xxxx=
om</A><BR><B>Subject:</B>=20
RE: [amibroker] Re: Point & Figure Chart in=20
AFL<BR><BR></FONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2>Hello Mirat,</FO=
NT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2></FONT> </D=
IV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2>Good stuff!!&nbs=
p; I made=20
some modifications to your code to call my Point & Figure DLL=
and=20
plot the data using your jscript code. I tested it on one s=
tock=20
(PYPL - short history) and it looks correct (except for the begin=
ning=20
bars:</FONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2></FONT> </D=
IV>
<DIV><IMG alt=3D"" hspace=3D0 src=3D"cid:559263021@xxxx"=
=20
align=3Dbaseline border=3D0></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2></FONT> </D=
IV>
<DIV><IMG alt=3D"" hspace=3D0 src=3D"cid:559263021@xxxx"=
=20
align=3Dbaseline border=3D0></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2></FONT> </D=
IV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2>I have attached =
the AFL to=20
this email (and posted below for Yahoo viewers).</FONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2></FONT> </D=
IV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2>Thanks again,</F=
ONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2>Peter</FONT></DI=
V>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2></FONT> </D=
IV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><FONT color=3D#0=
08000 size=3D1>
<P>// PF Chart by Mirat Dave</P>
<P>// Copy and paste this as a custom indicator.</P></FONT><FONT=
=20
color=3D#000000 size=3D1>
<P>x=3D</FONT><FONT color=3D#0000ff size=3D1>calcPnF</FONT><FONT=
=20
color=3D#000000 size=3D1>(</FONT><FONT color=3D#ff00ff size=3D1>0=
</FONT><FONT=20
color=3D#000000 size=3D1>,</FONT><FONT color=3D#ff00ff size=3D1>3=
</FONT><FONT=20
color=3D#000000 size=3D1>);</P></FONT><FONT color=3D#0000ff size=
=3D1>
<P>EnableScript</FONT><FONT color=3D#000000 size=3D1>(</FONT><FON=
T=20
color=3D#ff00ff size=3D1>"jscript"</FONT><FONT color=3D#000000 si=
ze=3D1>);</P>
<P><%</P>
<P>PnFValue =3D VBArray( AFL( </FONT><FONT color=3D#ff00ff=20
size=3D1>"PnFVal"</FONT><FONT color=3D#000000 size=3D1> ) ).toArr=
ay();</P>
<P>PnFColumn =3D VBArray( AFL( </FONT><FONT color=3D#ff00ff=20
size=3D1>"PnFCol"</FONT><FONT color=3D#000000 size=3D1> )=20
).toArray();</P></FONT><FONT color=3D#008000 size=3D1>
<P>// Calculate running average stock price for use in calculatin=
g the=20
Box size.</P></FONT><FONT color=3D#000000 size=3D1>
<P>PFO =3D new Array();</P>
<P>PFC =3D new Array();</P></FONT><FONT color=3D#008000 size=3D1>
<P>// initialize first element</P></FONT><FONT color=3D#000000 si=
ze=3D1>
<P>j =3D </FONT><FONT color=3D#ff00ff size=3D1>0</FONT><FONT colo=
r=3D#000000=20
size=3D1>;</P>
<P>PFO[j] =3D PnFValue[</FONT><FONT color=3D#ff00ff size=3D1>0</F=
ONT><FONT=20
color=3D#000000 size=3D1>];</P>
<P>PFC[j] =3D PnFValue[</FONT><FONT color=3D#ff00ff size=3D1>0</F=
ONT><FONT=20
color=3D#000000 size=3D1>];</P></FONT><FONT color=3D#008000 size=
=3D1>
<P>// perform the loop that produces PF Chart</P></FONT><FONT=20
color=3D#000000 size=3D1>
<P>for( i =3D </FONT><FONT color=3D#ff00ff size=3D1>1</FONT><FONT=
=20
color=3D#000000 size=3D1>; i < PnFValue.length; i++ )</P>
<P>{</P>
<P>if ( PnFColumn[i] =3D=3D </FONT><FONT color=3D#ff00ff=20
size=3D1>0</FONT><FONT color=3D#000000 size=3D1> ) </P>
<P>{</P>
<P>if( PnFColumn[i] =3D=3D </FONT><FONT color=3D#ff00ff size=3D1>=
0</FONT><FONT=20
color=3D#000000 size=3D1> && PnFColumn[i-</FONT><FONT=20
color=3D#ff00ff size=3D1>1</FONT><FONT color=3D#000000 size=3D1>]=
=3D=3D=20
</FONT><FONT color=3D#ff00ff size=3D1>0</FONT><FONT color=3D#0000=
00=20
size=3D1>)</P>
<P>{</P>
<P>PFC[j] =3D PnFValue[i];</P>
<P>}</P>
<P>if( PnFColumn[i] =3D=3D </FONT><FONT color=3D#ff00ff size=3D1>=
0</FONT><FONT=20
color=3D#000000 size=3D1> && PnFColumn[i-</FONT><FONT=20
color=3D#ff00ff size=3D1>1</FONT><FONT color=3D#000000 size=3D1>]=
!=3D=20
</FONT><FONT color=3D#ff00ff size=3D1>0</FONT><FONT color=3D#0000=
00 size=3D1>=20
)</P>
<P>{</P>
<P>j++;</P>
<P>PFC[j] =3D PnFValue[i];</P>
<P>PFO[j] =3D PnFValue[i-</FONT><FONT color=3D#ff00ff size=3D1>1<=
/FONT><FONT=20
color=3D#000000 size=3D1>];</P>
<P>}</P>
<P>}</P>
<P>else</P>
<P>{</P>
<P>if (PnFColumn[i] =3D=3D </FONT><FONT color=3D#ff00ff size=3D1>=
1</FONT><FONT=20
color=3D#000000 size=3D1>)</P>
<P>{</P>
<P>if( PnFColumn[i] =3D=3D </FONT><FONT color=3D#ff00ff size=3D1>=
1</FONT><FONT=20
color=3D#000000 size=3D1> && PnFColumn[i-</FONT><FONT=20
color=3D#ff00ff size=3D1>1</FONT><FONT color=3D#000000 size=3D1>]=
=3D=3D=20
</FONT><FONT color=3D#ff00ff size=3D1>1</FONT><FONT color=3D#0000=
00 size=3D1>=20
)</P>
<P>{</P>
<P>PFC[j] =3D PnFValue[i];</P>
<P>}</P>
<P>if( PnFColumn[i] =3D=3D </FONT><FONT color=3D#ff00ff size=3D1>=
1</FONT><FONT=20
color=3D#000000 size=3D1> && PnFColumn[i-</FONT><FONT=20
color=3D#ff00ff size=3D1>1</FONT><FONT color=3D#000000 size=3D1>]=
!=3D=20
</FONT><FONT color=3D#ff00ff size=3D1>1</FONT><FONT color=3D#0000=
00 size=3D1>=20
)</P>
<P>{</P>
<P>j++;</P>
<P>PFO[j] =3D PnFValue[i-</FONT><FONT color=3D#ff00ff size=3D1>1<=
/FONT><FONT=20
color=3D#000000 size=3D1>];</P>
<P>PFC[j] =3D PnFValue[i];</P>
<P>}</P>
<P>}</P>
<P>}</P>
<P>}</P></FONT><FONT color=3D#008000 size=3D1>
<P>// Shift chart to the right to eliminate trailing empty data</=
P>
<P>// - PF charts are generally smaller/shorter then the full sto=
ck=20
charts because they lack a time scale.</P></FONT><FONT color=3D#0=
00000=20
size=3D1>
<P>delta =3D PnFValue.length - PFO.length;</P>
<P>for( i =3D PnFValue.length; i > delta; i-- )</P>
<P>{</P>
<P>PFO[ i-</FONT><FONT color=3D#ff00ff size=3D1>1</FONT><FONT=20
color=3D#000000 size=3D1> ] =3D PFO[ i-delta-</FONT><FONT color=
=3D#ff00ff=20
size=3D1>1</FONT><FONT color=3D#000000 size=3D1>];</P>
<P>PFC[ i-</FONT><FONT color=3D#ff00ff size=3D1>1</FONT><FONT=20
color=3D#000000 size=3D1> ] =3D PFC[ i-delta-</FONT><FONT color=
=3D#ff00ff=20
size=3D1>1</FONT><FONT color=3D#000000 size=3D1>];</P>
<P>}</P>
<P>for( i =3D </FONT><FONT color=3D#ff00ff size=3D1>0</FONT><FONT=
=20
color=3D#000000 size=3D1>; i < delta; i++)</P>
<P>{</P>
<P>PFO[ i-</FONT><FONT color=3D#ff00ff size=3D1>1</FONT><FONT=20
color=3D#000000 size=3D1> ] =3D </FONT><FONT color=3D#ff00ff=20
size=3D1>0</FONT><FONT color=3D#000000 size=3D1>;</P>
<P>PFC[ i-</FONT><FONT color=3D#ff00ff size=3D1>1</FONT><FONT=20
color=3D#000000 size=3D1> ] =3D </FONT><FONT color=3D#ff00ff=20
size=3D1>0</FONT><FONT color=3D#000000 size=3D1>;</P>
<P>}</P>
<P>AFL.Var(</FONT><FONT color=3D#ff00ff size=3D1>"delta"</FONT><F=
ONT=20
color=3D#000000 size=3D1>) =3D delta;</P>
<P>AFL.Var(</FONT><FONT color=3D#ff00ff size=3D1>"length"</FONT><=
FONT=20
color=3D#000000 size=3D1>) =3D PnFValue.length;</P>
<P>AFL.Var(</FONT><FONT color=3D#ff00ff size=3D1>"PFO"</FONT><FON=
T=20
color=3D#000000 size=3D1>) =3D PFO;</P>
<P>AFL.Var(</FONT><FONT color=3D#ff00ff size=3D1>"PFC"</FONT><FON=
T=20
color=3D#000000 size=3D1>) =3D PFC;</P>
<P>%></P><B>
<P>O</B> =3D PFO;</P><B>
<P>C</B> =3D PFC;</P><B>
<P>H</B> =3D (<B>O</B>+<B>C</B>)/</FONT><FONT color=3D#ff00ff=20
size=3D1>2</FONT><FONT color=3D#000000 size=3D1>;</P><B>
<P>L</B> =3D (<B>O</B>+<B>C</B>)/</FONT><FONT color=3D#ff00ff=20
size=3D1>2</FONT><FONT color=3D#000000 size=3D1>;</P><B>
<P>GraphXSpace</B> =3D </FONT><FONT color=3D#ff00ff size=3D1>9</F=
ONT><FONT=20
color=3D#000000 size=3D1>;</P><B>
<P>Graph0Style</B> =3D </FONT><FONT color=3D#ff00ff size=3D1>64</=
FONT><FONT=20
color=3D#000000 size=3D1>;</P><B>
<P>Graph0Color</B> =3D</FONT><FONT color=3D#ff00ff size=3D1>1</FO=
NT><FONT=20
color=3D#000000 size=3D1>;</P><B>
<P>Graph0</B> =3D <B>C</B>;</P><B>
<P>Filter</B>=3D<B>C</B>></FONT><FONT color=3D#ff00ff=20
size=3D1>0</FONT><FONT color=3D#000000 size=3D1>;</P></FONT><FONT=
=20
color=3D#0000ff size=3D1>
<P>AddColumn</FONT><FONT color=3D#000000 size=3D1>(PFO,</FONT><FO=
NT=20
color=3D#ff00ff size=3D1>"PFO"</FONT><FONT color=3D#000000=20
size=3D1>);</P></FONT><FONT color=3D#0000ff size=3D1>
<P>AddColumn</FONT><FONT color=3D#000000 size=3D1>(PFC,</FONT><FO=
NT=20
color=3D#ff00ff size=3D1>"PFC"</FONT><FONT color=3D#000000=20
size=3D1>);</P></FONT></FONT></DIV>
<DIV><BR><BR></DIV>
<P><FONT size=3D2>-----Original Message-----<BR>From: mirat_dave =
[<A=20
href=3D"mailto:mirat_dave@xxxx";>mailto:mirat_dave@x...<=
/A>]<BR>Sent:=20
Friday, July 19, 2002 10:00 AM<BR>To:=20
amibroker@xxxxxxxxxxxxxxx<BR>Subject: [amibroker] Re: Point &=
=20
Figure Chart in AFL<BR><BR><BR>Hello Richard and=20
Dimitris,<BR><BR>Sorry to have caused so much confusion.<BR><BR>S=
ince=20
most stocks since 2000 have been trending down, you may get a<BR>=
only=20
a few bars because the P&F Chart ignores small up moves and=20
only<BR>extends down bars when the price moves more than the box=
=20
size. Since<BR>2000, you may very well have only a few=20
bars. Try loading more data<BR>for at least one stock.<BR><=
BR>I=20
used AmiQuote and Yahoo for the data. I have data from=20
January<BR>1994. The AmiBroker version on which I created t=
his=20
file is 4.0.0 <BR>Apr 26 2002.<BR><BR>I do not know if the=20
AmiBroker version is causing the difference. I<BR>saw that =
it=20
worked for Richard on MSFT (although I am not sure what<BR>the wh=
ole=20
MSFT v. MSFT issue was - it seems to have resolved<BR>itself).&nb=
sp;=20
Perhaps Richard also has more data loaded.<BR><BR>As you can see =
from=20
the script, it is very simple. If problems<BR>continue, I w=
ould=20
be happy to go through it in detail to see if there<BR>is a codin=
g=20
error.<BR><BR>I'm afraid I have no other explanation other than m=
ore=20
data. Let's<BR>try that first.<BR><BR>Mirat<BR><BR>PS =
I=20
would post .gifs of my charts but I do not know how to attach=20
a<BR>file to my reply. Although that would not help resolve=
the=20
issue. :-)<BR><BR><BR><BR><BR><BR>--- In amibroker@xxxx, "Richard=
=20
Alford" <richard.alford@xxxx> wrote:<BR>> I am just isol=
ating=20
variables. If we have the same program and<BR>version (4.06=
.1=20
Jun 19 build), the same indicator code (this I<BR>confirmed) and =
same=20
data we should get the same result. (I continue<BR>to belie=
ve in=20
deterministic computing - probably naive in light=20
of<BR>Microsoft!). The questionable variable, and a big one=
, is=20
the data<BR>source - I use qp2. Perhaps someone using yahoo=
=20
could compare to<BR>your results?<BR>><BR>><BR>> It does=
=20
appear that the "box size", the significant change that<BR>define=
s an=20
X or O in my understanding, should be normalized to the<BR>price =
of=20
the instrument to account for the difference in WCOME<BR>pricing =
vs.=20
DJIA, for example. I am referring to the code=20
fragment:<BR>><BR>> // Calculate PF Chart Box size and mini=
mum=20
Reverse values<BR>> // Box =3D=20
((tot[i]/(i+1))^.5)/7.3374; <BR>><BR>&g=
t;=20
Cheers,<BR>><BR>> Richard<BR>> ----- Origina=
l=20
Message -----<BR>> From: dtsokakis<BR>> &n=
bsp;=20
To: amibroker@xxxx<BR>> Sent: Wednesday, July 17, =
2002=20
2:49 PM<BR>> Subject: [amibroker] Re: Point &=
=20
Figure Chart in AFL<BR>><BR>><BR>> =20
Richard,<BR>> YHOO via Amiquote.<BR>> &nbs=
p;=20
Why do you think it is a matter of data provider ?<BR>> &=
nbsp;=20
Dimitris Tsokakis<BR>><BR>> --- In amibroker@xxxx=
..,=20
"Richard Alford"=20
<richard.alford@xxxx><BR>wrote:<BR>> > bu=
t the=20
point remains that you and I get different=20
results. <BR>what<BR>> is your data=20
source?<BR>> ><BR>> >=20
Richard<BR>> > ----- Original Messa=
ge=20
-----<BR>> > From:=20
dtsokakis<BR>> > To:=20
amibroker@xxxx<BR>> > Sent: Wednesd=
ay,=20
July 17, 2002 1:47 PM<BR>> > Subjec=
t:=20
[amibroker] Re: Point & Figure Chart in AFL<BR>> &nbs=
p;=20
><BR>> ><BR>> >  =
;=20
Richard,<BR>> > ANY other function =
works=20
just fine with my valuable Amibroker<BR>> =20
4.06.<BR>> > Just=20
fine.<BR>> > I can not see the reas=
on=20
for this P&F script.<BR>> > Any=
way,=20
the author perhaps could expain.<BR>> > &n=
bsp;=20
Dimitris Tsokakis<BR>> ><BR>> =20
> --- In amibroker@xxxx, "Richard Alford"=20
<richard.alford@xxxx><BR>> =20
wrote:<BR>> > > DT, I agree it w=
as=20
not easy to understand. The=20
attached<BR>charts<BR>> > showed th=
e TWO=20
results that were generated whenever I=20
entered<BR>the<BR>> > symbol MSFT -=
it=20
appears to be a fluke and I cannot reproduce<BR>it<BR>> &=
nbsp;=20
any<BR>> > longer. Although t=
here=20
is not ticker name in the formula,<BR>there<BR>> =20
was<BR>> > strange behavior occurri=
ng=20
for MSFT and MSFT only at that<BR>time.<BR>> =20
> ><BR>> > > T=
he=20
gist of my reply to you was that using the SAME code=20
as<BR>you<BR>> > posted and using t=
he=20
code I copied from the files sections, I<BR>> =20
> generated the same results - and not the results=
that=20
you<BR>were<BR>> > creating. =
That=20
suggests that you have a problem in your data<BR>> =
=20
and/or<BR>> > setup. The only=
=20
reason for the two codes was to guarantee<BR>that<BR>> &n=
bsp;=20
there<BR>> > wasn't a subtle error =
-=20
there was not.<BR>> > =20
><BR>> > > Sorry for adding t=
he=20
confusion about the MSFT fluke at the<BR>same<BR>> =
=20
> time.<BR>> > =20
><BR>> > >=20
Cheers,<BR>> > ><BR>> &n=
bsp;=20
> > Richard<BR>> >  =
;=20
> ----- Original Message -----<BR>> =
=20
> > From: dtsokakis<BR>> &n=
bsp;=20
> > To:=20
amibroker@xxxx<BR>> > > &nb=
sp;=20
Sent: Wednesday, July 17, 2002 12:47 AM<BR>> =20
> > Subject: [amibroker] Re: Point =
&=20
Figure Chart in AFL<BR>> > =20
><BR>> > ><BR>>  =
;=20
> > Richard,<BR>> =20
> > It is not easy to understand=20
this<BR>> > > "the p=
lot=20
for MSFT changes when one changes the symbol go<BR>> &nbs=
p;=20
MSFT<BR>> > from<BR>>  =
;=20
> > MSFT??? "<BR>> =20
> > I copied the formula=20
from<BR>> > > <A=20
target=3D_blank=20
href=3D"http://groups.yahoo.com/group/amibroker/files/Point-Figur=
e">http://groups.yahoo.com/group/amibroker/files/Point-Figure</A><BR>>&n=
bsp; =20
> > pasted in my Ind. builder and g=
et=20
the posted gifs.<BR>> > > &=
nbsp;=20
No ticker name is into the formula.<BR>> =20
> > What is "the two MSFT "=20
???<BR>> > > Do you =
use=20
the same code from the above address??<BR>> =20
> > DT<BR>> =20
> ><BR>> > =20
><BR>> > > --- In=
=20
amibroker@xxxx, "Richard=20
Alford"<BR><richard.alford@xxxx><BR>> =20
> wrote:<BR>> > =20
> > Those are not the figures I generate using =
the=20
code in<BR>> > the=20
"files<BR>> > > =20
section". (Why wasn't this put in the AFL library is=20
a<BR>> question<BR>> > &nbs=
p;=20
in<BR>> > > my=20
mind???)<BR>> > > =20
><BR>> > > > J=
ust=20
noticed that the plot for MSFT changes when one<BR>> &nbs=
p;=20
changes<BR>> > the<BR>> &nb=
sp;=20
> > symbol go MSFT from MSFT???&nbs=
p;=20
Not the case for AMZN or<BR>ORCL? <BR>> =20
> > ><BR>> =20
> > > I attached the two MSFT fo=
r=20
comparison, one is "my"<BR>copy,<BR>> =20
and<BR>> > the<BR>> =
=20
> > other is a copy and paste of th=
e=20
code in your note. The<BR>> > =
=20
difference<BR>> > > =
is=20
the quirk in MSFT, not an error in the code you=20
have<BR>used.<BR>> And<BR>> =20
> DT<BR>> > =20
> do you really like black on blue borders? =
=20
Personally, I<BR>can<BR>> > =20
never<BR>> > > read =
your=20
chart titles.<BR>> > > &nbs=
p;=20
><BR>> > > >=20
Cheers,<BR>> > > =20
><BR>> > > >=20
Richard<BR>> > > =20
><BR>> > > =20
><BR>> > > =20
> ----- Original Message -----<BR>> =
=20
> > > From: Dimitris=
=20
Tsokakis<BR>> > > =20
> To: amibroker@xxxx<BR>> =20
> > > Sent: Tuesday,=
July=20
16, 2002 1:14 PM<BR>> > > &=
nbsp;=20
> Subject: [amibroker] Re: Point & Figure Char=
t in=20
AFL<BR>> > > =20
><BR>> > > =20
><BR>> > > =20
> Mirat,<BR>> > =20
> > Here is P&F charts for AMZN=
,=20
MSFT and ORCL.<BR>> > > &nb=
sp;=20
> Data since Jan 2000.<BR>> =20
> > > Is it the expe=
cted=20
picture ?<BR>> > > =20
> The code, copied from files=20
section<BR>> > > =20
><BR>> > > =20
> // PF Chart by Mirat Dave<BR>> =20
> > > // Copy and pa=
ste=20
this as a custom indicator.<BR>> > =
=20
> ><BR>> > =20
> > =20
EnableScript("jscript");<BR>> > =20
> > <%<BR>> =20
> > ><BR>> =20
> > > High =3D VBArr=
ay(=20
AFL( "High" ) ).toArray();<BR>> > =20
> > Low =3D VBArray( AFL( "Low" )=20
).toArray();<BR>> > >  =
;=20
><BR>> > > =20
> // Calculate running average stock price for use=
=20
in<BR>> > =20
calculating<BR>> > > =
the=20
Box size.<BR>> > > =20
><BR>> > > =20
> tot =3D new Array();<BR>> =20
> > > tot[0] =3D (Hi=
gh[0] +=20
Low[0])/2;<BR>> > > =
=20
> for( i=3D1; i < High.length; i++=20
)<BR>> > > =20
> {<BR>> > =20
> > tot[i] =3D tot[i-1] + ((High[i]=
+=20
Low[i])/2);<BR>> > > =
=20
> }<BR>> > =20
> > PFO =3D new=20
Array();<BR>> > > =20
> PFC =3D new Array();<BR>> =20
> > ><BR>> =20
> > > // initialize =
first=20
element<BR>> > > =20
><BR>> > > =20
> j =3D 0;<BR>> > =20
> > PFO[j] =3D=20
High[0];<BR>> > > =20
> PFC[j] =3D Low[0];<BR>> > =
; =20
> > down =3D 1; // By default the f=
irst=20
bar is a down bar.<BR>> > =20
> ><BR>> > =20
> > up =3D 0;<BR>> =20
> > > swap =3D=20
0;<BR>> > > =20
><BR>> > > =20
> // perform the loop that produces PF=20
Chart<BR>> > > =20
><BR>> > > =20
> for( i =3D 1; i < High.length; i++=20
)<BR>> > > =20
> {<BR>> > =20
> > // Calculate PF Chart Box size =
and=20
minimum Reverse<BR>values<BR>> > =20
> ><BR>> > =20
> > Box =3D=20
((tot[i]/(i+1))^.5)/7.3374;<BR>> > =
=20
> > Reverse =3D Box *=20
3;<BR>> > > =20
> if( Low[i] < PFC[j] - Box &&=20
down)<BR>> > > =20
> {<BR>> > =20
> > PFC[j] =3D Low[i];<BR>> =
; =20
> > > =20
}<BR>> > > =20
> else<BR>> > =20
> > {<BR>> =20
> > > if( High[i] &g=
t;=3D=20
PFC[j] + Reverse && down)<BR>> > &=
nbsp;=20
> > {<BR>> =20
> > > =20
j++;<BR>> > > =20
> swap =3D 1;<BR>> > =
=20
> > PFO[j] =3D Low[i];<BR>> =
; =20
> > > PFC[j] =3D=20
High[i];<BR>> > > =20
> }<BR>> > =20
> > }<BR>> =20
> > > if( High[i] &g=
t;=20
PFC[j] + Box && up)<BR>> > =
=20
> > {<BR>> =20
> > > PFC[j] =3D=20
High[i];<BR>> > > =20
> }<BR>> > =20
> > else<BR>> =20
> > > =20
{<BR>> > > =20
> if( Low[i] <=3D PFC[j] - Reverse &&=20
up)<BR>> > > =20
> {<BR>> > =20
> > j++;<BR>> =20
> > > PFC[j] =3D=20
Low[i];<BR>> > > =20
> PFO[j] =3D High[i];<BR>> =20
> > > swap =3D=20
1;<BR>> > > =20
> }<BR>> > =20
> > }<BR>> =20
> > > if( swap=20
)<BR>> > > =20
> {<BR>> > =20
> > swap =3D 0;<BR>> =
=20
> > > if( up=20
)<BR>> > > =20
> {<BR>> > =20
> > up =3D 0;<BR>> =20
> > > down =3D=20
1;<BR>> > > =20
> }<BR>> > =20
> > else<BR>> =20
> > > =20
{<BR>> > > =20
> up =3D 1;<BR>> > =20
> > down =3D 0;<BR>> =
=20
> > > =20
}<BR>> > > =20
> }<BR>> > =20
> > }<BR>> =20
> > ><BR>> =20
> > > // Shift chart=
to=20
the right to eliminate trailing<BR>empty<BR>> =20
data<BR>> > > =20
> // - PF charts are generally smaller/shorter the=
n=20
the<BR>> full<BR>> > =
=20
stock<BR>> > > chart=
s=20
because they lack a time scale.<BR>> > &nb=
sp;=20
> ><BR>> > =20
> > delta =3D High.length -=20
PFO.length;<BR>> > > =
=20
> for( i =3D High.length; i > delta; i--=20
)<BR>> > > =20
> {<BR>> > =20
> > PFO[ i-1 ] =3D PFO[=20
i-delta-1];<BR>> > > =
=20
> PFC[ i-1 ] =3D PFC[ i-delta-1];<BR>> &nb=
sp;=20
> > > =20
}<BR>> > > =20
> for( i =3D 0; i < delta; i++)<BR>> &n=
bsp;=20
> > > =20
{<BR>> > > =20
> PFO[ i-1 ] =3D 0;<BR>> > =
=20
> > PFC[ i-1 ] =3D 0;<BR>> =
=20
> > > =20
}<BR>> > > =20
> AFL.Var("PFO") =3D PFO;<BR>> =20
> > > AFL.Var("PFC")=
=3D=20
PFC;<BR>> > > =20
> %><BR>> > =20
> ><BR>> > =20
> > O =3D PFO;<BR>> =
=20
> > > C =3D=20
PFC;<BR>> > > =20
><BR>> > > =20
> H =3D (O+C)/2;<BR>> > &nb=
sp;=20
> > L =3D (O+C)/2;<BR>> &nb=
sp;=20
> > ><BR>> =20
> > > GraphXSpace =
=3D=20
9;<BR>> > > =20
> Graph0Style =3D 64;<BR>> =20
> > ><BR>> =20
> > > Graph0Color=20
=3D1;<BR>> > > =20
> Graph0 =3D C;<BR>> > &nbs=
p;=20
> ><BR>> > =20
> > Thanks in advance for any=20
reply.<BR>> > > =20
> Dimitris Tsokakis<BR>> =20
> > ><BR>> =20
> > =20
> Yahoo! Group=
s=20
Sponsor<BR>> > > =20
><BR>> > > =20
> Click here t=
o=20
find your contact lenses!<BR>> > =20
> ><BR>> > =20
> > Your use of Yahoo! Groups is su=
bject=20
to the Yahoo!<BR>Terms<BR>> of<BR>> =
=20
> > Service.<BR>> =20
> ><BR>> > =20
><BR>> > =20
> Yahoo! Group=
s=20
Sponsor<BR>> > =20
> &=
nbsp; =20
ADVERTISEMENT<BR>> > =20
> &=
nbsp; <BR>> =20
> =20
> <BR>>  =
;=20
> ><BR>> > =20
> Your use of Yahoo! Groups is subject to the Yaho=
o!=20
Terms<BR>of<BR>> > =20
Service.<BR>> ><BR>> =20
><BR>> =20
> Yahoo! Group=
s=20
Sponsor<BR>> =20
> &=
nbsp; =20
ADVERTISEMENT<BR>> =20
> &=
nbsp; <BR>> =20
> <BR>>  =
;=20
><BR>> > Your use of Yahoo! Grou=
ps is=20
subject to the Yahoo! Terms of<BR>> =20
Service.<BR>><BR>><BR>> &nb=
sp; =20
Yahoo! Groups=20
Sponsor<BR>> &n=
bsp; =20
ADVERTISEMENT<BR>> &n=
bsp; <BR>> &nb=
sp; <BR>><BR>> =20
Your use of Yahoo! Groups is subject to the Yahoo! Terms=20
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Sponsor ---------------------~--><BR>Will You Find True=20
Love?<BR>Will You Meet the One?<BR>Free Love Reading by phone!<BR=
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target=3D_blank=20
href=3D"http://us.click.yahoo.com/O3jeVD/R_ZEAA/Ey.GAA/GHeqlB/TM"=
>http://us.click.yahoo.com/O3jeVD/R_ZEAA/Ey.GAA/GHeqlB/TM</A><BR>----------=
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