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<span
>Hi Bob,

<span
> 

<span
>Thanks very much for helping me to get my &#8216;Clayburg&#8217;
S & R & Trendlines working when Plotted. I have never done any script
writing to date so I guess I have a whole new learning curve ahead!

<span
> 

<span
>One further point if I may, the trading
system I am working on will use these Support and Resistance Lines as Triggers
for entries and exits (after the Dual Oscillators have fired as per John
Clayburg&#8217;s trading method). In order to System Test, I would want AB to
only analyze the last Plot as extended and not previous extended plot lines. In
the code so far written, is there any way that I can suppress all extensions
other than the last one - mainly for System Testing but also for Charting
clarity.

<span
> 

<span
>Once again thank you for your invaluable
help.

<span
> 



<span
>Regards,

<span
>
Gordon Sutherland



<span
> 

<span
>-----Original Message-----
From: Bob Johnson
[mailto:bjohnson314@xxxxxxxxx] 
Sent: Sunday, 23 May 2004 2:26
a.m.
To: amibroker@xxxxxxxxxxxxxxx
Subject: Re: [amibroker] Re: Help
with Line Array Coding for Clayburg

<font size=3
face="Times New Roman"> 



<font size=2 color=black
face=Arial>Try
putting your LineArray & Plot calls in a for loop after you've calculated
the x,y arrays and after you've plotted the price histogram.





<font size=2 color=black
face=Arial>I've
changed the 'extend' so it's dependent on how close to the right edge
you are.





<font size=2 color=black
face=Arial>If you
have 'extend' = 1 all the time the indicator becomes unreadable because
old plot lines extend far above & below the price chart.





<font size=3 color=green
face="Times New Roman"> 





<font size=2 color=black
face=Arial>/* JOHN
CLAYBURG BASED SUPPORT/RESISTANCE LINES





<font size=2 color=black
face=Arial>  Coded
by GBS May 2004





<font size=2 color=black
face=Arial>/*
CATEGORY 3 SUPPORT BREAKOUT TRIGGER FOR SHORTS: */





<font size=3 color=maroon
face="Times New Roman"> 





<font size=2 color=black
face=Arial>LL_3_6
= Ref(L,-6) > Ref(<span
>L,-3);





<font size=2 color=black
face=Arial>LL_3_5
= Ref(L,-5) > Ref(<span
>L,-3);





<font size=2 color=black
face=Arial>LL_3_4
= Ref(L,-4) > Ref(<span
>L,-3); 





<font size=2 color=black
face=Arial>LL_3_2
= Ref(L,-2) > Ref(<span
>L,-3);





<font size=2 color=black
face=Arial>LL_3_1
= Ref(L,-1) > Ref(<span
>L,-3);





<font size=2 color=black
face=Arial>LL_3_0
= L > Ref(<span
>L,-3);





<font size=3 color=maroon
face="Times New Roman"> 





<font size=2 color=black
face=Arial>Cat3Sup
= LL_3_6 AND LL_3_5 <span
>AND LL_3_4 AND LL_3_2 AND
LL_3_1 AND LL_3_0;





<font size=2 color=black
face=Arial> 





<font size=2 color=black
face=Arial>/*
SUPPORT LINE ("SC") */





<font size=3 color=maroon
face="Times New Roman"> 





<font size=2 color=black
face=Arial>Cat3 =
ValueWhen(Cat3Sup,BarIndex(),1)-3;





<font size=2 color=black
face=Arial>y0=ValueWhen(Cat3Sup,Ref(<span
>L,-3),2); 





<font size=2 color=black
face=Arial>y1=ValueWhen(Cat3Sup,Ref(<span
>L,-3),1); 





<font size=2 color=black
face=Arial>x0=ValueWhen(Cat3Sup,BarIndex(),2)-3;





<font size=2 color=black
face=Arial>x1=ValueWhen(Cat3Sup,BarIndex(),1)-3;





<font size=3 color=maroon
face="Times New Roman"> 





<font size=2 color=black
face=Arial>Plot(y0,
"Trendline Bot y0", colorDefault,<span
>styleNoLine+styleOwnScale);





<font size=2 color=black
face=Arial>Plot(y1,
"Trendline Bot y1", colorBlue,<span
>styleNoLine+styleOwnScale);





<font size=2 color=black
face=Arial>Plot(x0,"x0",<span
>colorDefault,styleNoLine+styleOwnScale);
//test only to check for correct bar value





<font size=2 color=black
face=Arial>Plot(x1,"x1",<span
>colorDarkGrey,styleNoLine+styleOwnScale);
//test only to check for correct bar value





<font size=2 color=black
face=Arial>Plot(BarIndex(),"BarIndex()",<span
>colorDefault,styleNoLine+styleOwnScale);
//test only to check for correct bar value





<font size=3 color=maroon
face="Times New Roman"> 





<font size=2 color=black
face=Arial>Plot(<span
>C,"C", colorRed, styleCandle);






<font size=3 color=maroon
face="Times New Roman"> 





<font size=2
color=black face=Arial>for<span
> ( i = 7 ; i < <font
face=Arial>BarCount
; i++ ) {





<font size=2
color=black face=Arial>  if ( x0[i] != x0[i-1] ) {





<font size=2
color=black face=Arial>    if ( i > BarCount - 50 ) 





<font size=2
color=black face=Arial>      extend = 1;





<font size=2
color=black face=Arial>    else





<font size=2
color=black face=Arial>      extend = 0;





<font size=2
color=black face=Arial>    Line = LineArray( x0[i], y0[i], x1[i],
y1[i],extend,True); 





<font size=2
color=black face=Arial>    Plot(Line,"Cat3Sup
Line",colorDefault,styleLine);





<font size=2
color=black face=Arial>  }





<font size=2
color=black face=Arial>}



<span
>----- Original Message ----- 





<font
size=2 face=Arial>From: <a href=""
title="gosuth@xxxxxxxxxx">Gordon Sutherland 





<span
>To:<font
size=2 face=Arial> <a
href="" title="amibroker@xxxxxxxxxxxxxxx">amibroker@xxxxxxxxxxxxxxx






<span
>Sent:<font
size=2 face=Arial> Saturday,
May 22, 2004 2:27 AM





<span
>Subject:<font
size=2 face=Arial> RE:
[amibroker] Re: Help with Line Array Coding for Clayburg





<font size=3
face="Times New Roman"> 



<font size=3 color=black
face="Times New Roman">Hi Graham,

<font size=3
face="Times New Roman"> 

<font size=3 color=black
face="Times New Roman">Thanks for
prompt response.

<font size=3
face="Times New Roman"> 

<font size=3 color=black
face="Times New Roman">I have
changed my code as per your suggestions with the caveat that I have changed the
&#8220;+3&#8221; to &#8220;-3&#8221; because you are computing from the start
rather than the end of the data. The values for the four co-ordinates seem to
be correct when I plot them before applying the LineArray function. However,
when I activate the LineArray function  (&#8216;Line&#8217;)  then
 a warning pops-up &#8220;Error 2. Bad Argument(s)&#8221;. I have the
QuickAFL&#8482; switched on but it makes no difference if I turn this feature
off!

<font size=3
face="Times New Roman"> 

<font size=3 color=black
face="Times New Roman">The revised
code is submitted below. I would appreciate any help as to what I am doing
wrong that will not accept the code for AutoPlot.

<font size=3
face="Times New Roman"> 

<span
lang=EN-NZ >/* JOHN CLAYBURG
BASED SUPPORT/RESISTANCE LINES

<span
lang=EN-NZ >     
       Coded by GBS May 2004

<font size=3
face="Times New Roman"> 

<span
lang=EN-NZ >/* CATEGORY 3
SUPPORT BREAKOUT TRIGGER FOR SHORTS:    */

<span
lang=EN-NZ >LL_3_6 =
Ref(L,-6) > Ref(L,-3);

<span
lang=EN-NZ >LL_3_5 =
Ref(L,-5) > Ref(L,-3);

<span
lang=EN-NZ >LL_3_4 =
Ref(L,-4) > Ref(L,-3); 

<span
lang=EN-NZ >LL_3_2 =
Ref(L,-2) > Ref(L,-3);

<span
lang=EN-NZ >LL_3_1 =
Ref(L,-1) > Ref(L,-3);

<span
lang=EN-NZ >LL_3_0
=     L     > Ref(L,-3);

<span
lang=EN-NZ >Cat3Sup = LL_3_6
AND LL_3_5 AND LL_3_4 AND LL_3_2 AND LL_3_1 AND LL_3_0;

<font size=3
face="Times New Roman"> 

<span
lang=EN-NZ >/* SUPPORT LINE
("SC")  */

<span
lang=EN-NZ >Cat3 =
ValueWhen(Cat3Sup,BarIndex(),1)-3;

<span
lang=EN-NZ >y0=ValueWhen(Cat3Sup,Ref(L,-3),2);


<span
lang=EN-NZ >y1=ValueWhen(Cat3Sup,Ref(L,-3),1);


<span
lang=EN-NZ >x0=ValueWhen(Cat3Sup,BarIndex(),2)-3;

<span
lang=EN-NZ >x1=ValueWhen(Cat3Sup,BarIndex(),1)-3;

<span
lang=EN-NZ >//Line =
LineArray( x0, y0, x1, y1, 1); // Warning comes up "Error 2 - Bad
Argument(s)"

<span
lang=EN-NZ >//Plot(Line,"Cat3Sup
Line",colorDefault,1);// Dependent on "Line = LineArray..." not
working

<font size=3
face="Times New Roman"> 

<span
lang=EN-NZ >Plot(C,"C",
colorRed, styleCandle); 

<span
lang=EN-NZ >Plot(y0,
"Trendline Bot y0", colorDefault,16);

<span
lang=EN-NZ >Plot(y1,
"Trendline Bot y1", colorBlue,1+4);

<span
lang=EN-NZ >Plot(x0,"x0",colorDefault,16);     
//test only to check for correct bar value

<span
lang=EN-NZ >Plot(x1,"x1",colorDarkGrey,16); 
//test only to check for correct bar value

<span
lang=EN-NZ >Plot(BarIndex(),"BarIndex()",colorDefault,16);
//test only to check for correct bar value



<font size=3
face="Times New Roman"> 

<font size=3 color=green
face="Times New Roman">Regards,

<font size=3 color=green
face="Times New Roman">
Gordon Sutherland



<font size=3
face="Times New Roman"> 

<span
>-----Original Message-----
From: Graham
[mailto:gkavanagh@xxxxxxxxxxxxx] 
Sent: Saturday, 22 May 2004 4:27
p.m.
To: amibroker@xxxxxxxxxxxxxxx
Subject: RE: [amibroker] Re: Help
with Line Array Coding for Clayburg

<font size=3
face="Times New Roman"> 

Tired
to sort out what you were doing, does this help you at least<font
size=2 face="Courier New">
alternative way of doing it?

Cat3 = Valuewhen(Cat3Sup,barindex(),1)+3;
x0 = Valuewhen(Cat3Sup,barindex(),2)+3;

Cheers,
Graham
http://e-wire.net.au/~eb_kavan/

-----Original Message-----
From: Gordon Sutherland [mailto:gosuth@xxxxxxxxxx]

Sent: Saturday, May 22, 2004 12:09 PM
To: amibroker@xxxxxxxxxxxxxxx
Subject: [amibroker] Re: Help with Line Array
Coding for Clayburg

Hi,
 
I am new to AB (Std Version 4.56 Beta) and I am
working on porting my custom
indicators and systems over from my previous
software (AIQ and MetaStock).
Not being very good at programming at the best of
times, I have spent
several hours trying to get the coding right to
Plot custom Trendlines using
John Clayburg&#8217;s Category 3
Support/Resistance Lines. For the Line Array
function in AB I have gotten as far as getting the
y0/y1/x1 co-ordinates
coding sorted but the final hurdle of
&#8216;x0&#8217; has got be beat. Any help with my
coding would be greatly appreciated. The code I
have written so far is:
 
/* JOHN CLAYBURG BASED CATEGORY 3
SUPPORT/RESISTANCE LINES
      as discussed in his
book "Four Steps To Trading Success" /*     

 
/* CATEGORY 3 SUPPORT LINE:   */
LL_3_6 = Ref(L,-6) > Ref(L,-3);
LL_3_5 = Ref(L,-5) > Ref(L,-3);
LL_3_4 = Ref(L,-4) > Ref(L,-3); 
LL_3_2 = Ref(L,-2) > Ref(L,-3);
LL_3_1 = Ref(L,-1) > Ref(L,-3);
LL_3_0 =    
L     > Ref(L,-3);
Cat3Sup = LL_3_6 AND LL_3_5 AND LL_3_4 AND LL_3_2
AND LL_3_1 AND LL_3_0;
 
/* SUPPORT LINE ("SC")  */
Cat3 = BarsSince(Cat3Sup)+3;
//Fx0 = BarCount - 1 - Cat3 -
ValueWhen(Cat3Sup,BarsSince(Cat3Sup)+3,2); //
NOT WORKING CORRECTLY
Fx1 = BarCount - 1 - Cat3; /* This gives me my x0
co-ordinate */
y0=ValueWhen(Cat3Sup,Ref(L,-3),2); 
y1=ValueWhen(Cat3Sup,Ref(L,-3),1); 
//x0=BarCount - 1 - ValueWhen(Cat3Sup,Cat3,2); //
NOT WORKING CORRECTLY
x1=BarCount - 1 - Cat3;
//Line = LineArray( x0, y0, x1, y1, 1 ); //
Pending sorting the x0 coding
out 
Plot(C,"C", colorRed, styleCandle); 
Plot(y0, "Trendline Bot y0",
colorDefault,16);
Plot(y1, "Trendline Bot y1",
colorBlue,1+4);
//Plot(???,"",colorDefault,16);  
// Dependent on sorting Coding on
co-ordinate x0
//Plot(Cat3,"",colorDarkGrey,16); //
Working OK
 
TIA,
 
Regards,

Gordon Sutherland



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<font size=3
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Send
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