RE: [amibroker] AB 4.33 beta: AMAZING looping enhancement!

["Graham" <gkavanagh@xxxxxxxxxxxxx>]

Is this the formula you are referring to?

<span
>bestequity = <font size=1
color=fuchsia>0<font
size=1 color=black>;
bestrange = 0<span
>;

<span
>// optimization
loop

<span
>for<font
size=1 color=black>( range = <font
size=1 color=fuchsia>12<font
size=1 color=black>; range < <font
size=1 color=fuchsia>40<font
size=1 color=black>; range ++ )
{

<span
>  Buy<font
size=1 color=black> = <font
size=1 color=blue>Cross<font
size=1 color=black>( <span
>Close, <font size=1
color=blue>EMA<font
size=1 color=black>( <span
>Close, range ) );

<span
>  Sell<font
size=1 color=black> = <font
size=1 color=blue>Cross<font
size=1 color=black>( <font
size=1 color=blue>EMA<font
size=1 color=black>( <span
>Close, range ), Close );

<span
> Le<font
size=1 color=black> =<font
size=1 color=black face="Courier New"> <font size=1 color=blue
face="Courier New">LastValue<span
>(<font
size=1 color=black> <font
size=1 color=blue>Equity<font
size=1 color=black>()<font
size=1 color=black face="Courier New"> )<span
>;

<span
>  if<font
size=1 color=black>( <font
size=1 color=black face="Courier New">Le<span
> > bestequity )
  { 
<span
>   bestequity
= Le;
   bestrange = range;
 }
}

<span
>range = bestrange;

<span
>Buy<font
size=1 color=black> = <font
size=1 color=blue>Cross<font
size=1 color=black>( <span
>Close, <font size=1
color=blue>EMA<font
size=1 color=black>( <span
>Close, range ) );

<span
>Sell<font
size=1 color=black> = <font
size=1 color=blue>Cross<font
size=1 color=black>( <font
size=1 color=blue>EMA<font
size=1 color=black>( <span
>Close, range ), Close );

<span
>Filter<font
size=1 color=black face="Courier New"> = <font size=1 color=blue
face="Courier New">BarIndex<span
>() == <span
>BarCount - <font size=1
color=fuchsia face="Courier New">1<span
>;

<span
>AddColumn<font
size=1 color=black face="Courier New">( bestrange, <font size=1
color=fuchsia face="Courier New">"Best range"<font size=1 color=black
face="Courier New"> );

<span
>AddColumn<font
size=1 color=black face="Courier New">( <font size=1 color=blue
face="Courier New">Equity<span
>(), <font
size=1 color=fuchsia face="Courier New">"Best Equity"<font
size=1 color=black face="Courier New"> );

 



<font size=3 color=teal
face="Times New Roman">Cheers,
Graham

<font size=2
color="#339966" face="Times New Roman"><font
color="#339966">http://groups.msn.com/ASXShareTrading

<font size=2
color="#339966" face="Times New Roman"><font
color="#339966">http://groups.msn.com/FMSAustralia



<span
>-----Original Message-----
From: Herman vandenBergen
[mailto:psytek@xxxxxxxx] 
Sent: Monday, 28 April 2003 8:36
AM
To: Amibroker@xxxxxxxxxxxx Com
Subject: [amibroker] AB 4.33 beta:
AMAZING looping enhancement!

<font size=2
face="Times New Roman"> 



<font size=2
color=blue face=Arial>I just have to share my excitement with you. The latest AB beta
release features phenomenal looping improvements; the result of extremely
clever memory management - as I understand it. Look at the before and after
performance:





<font size=2
face="Times New Roman"> 





<font size=2
color=blue face=Arial>A before test of 35 loops, at which point my computer ran into
memory problems at about 1200 Seconds: 





<img border=0 width=407 height=274
src="jpg00126.jpg" align=baseline>

<span
>Below a AB 4.33 beta test showing
system optimization utilizing loops in an Exploration. The very first
version of this program took hours to optimize, now i can optimize entire
baskets of stocks and save all optimized parameters automatically in a file for
recall from disk by the systems code (see example code posted a few days ago on
this procedure). <font color=blue
face=Arial>You
don't have to wait for built-in Individual Optimizing of Baskets of stocks
capability: you have it right now.<font
color=blue face=Arial> All this
shows you that it is worth your while to spend a few hours reading up on
looping!  





<span
><img border=0 width=450 height=305
src="jpg00127.jpg" align=baseline>





<font size=2
color=blue face=Arial>Best regards,





<font size=2
color=blue face=Arial>Herman





<font size=2
face="Times New Roman"> 



<font size=2
face="Times New Roman">



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BUG REPORTS to bugs@xxxxxxxxxxxxx<span
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