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RE: AmiBroker 4.31.1 BETA released, was [amibroker] AmiBroker 4.31.0 BETA released



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<FONT face=Arial color=#0000ff 
size=2>Bodacious Binary TJ!
<FONT face=Arial color=#0000ff 
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After 
seeing how quiet you've been these last few weeks I started getting excited... 
and I was happily rewared this am when I saw your message!  

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In 
trying to get my thinking together on this: is it now possible to simulate an 
optimization when running an Exploration by using the FOR construct?  What 
I'm trying to do is get some extra columns that contain calculated data during 
an Optimization. SInce you can't use the Addcolumn in the Optimizer I've been 
wondering how I might go about this using the FOR (or even the While).  If 
you have a few moments could you illustrate how this might be done (if possible) 
using a simple example?
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<FONT face=Arial color=#0000ff 
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  <FONT 
  face=Tahoma size=2>-----Original Message-----From: Tomasz Janeczko 
  [mailto:amibroker@xxxxxx] Sent: Sunday, April 13, 2003 10:07 
  AMTo: amibroker@xxxxxxxxxxxxxxxSubject: AmiBroker 4.31.1 
  BETA released, was [amibroker] AmiBroker 4.31.0 BETA 
  released
  
  Hello,
   
  A new version 4.31.1 BETA is available now
  for download from:
  <A 
  href="">http://www.amibroker.com/members/bin/ab4311beta.exe
   
  It fixes bug introduced in 4.31.0 that caused no text 
  output
  in commentary/interpretation window.
   
  Best regards,Tomasz Janeczkoamibroker.com
  <BLOCKQUOTE 
  >
    ----- Original Message ----- 
    <DIV 
    >From: 
    Tomasz Janeczko 
    
    To: <A title=amibroker@xxxxxxxxxxxxxxx 
    href="">amibroker@xxxxxxxxxxxxxxx 
    Sent: Sunday, April 13, 2003 11:07 
    AM
    Subject: [amibroker] AmiBroker 4.31.0 
    BETA released
    
    Hello,
     
    A new beta version (4.31.0) of AmiBroker has just been 
    released.
     
    It is available for registered users only from the members 
    area at:
    <A 
    href="">http://www.amibroker.com/members/bin/ab4310beta.exe
     
    If you forgot your user name / password to the members 
    area
    you can use automatic reminder service at: <A 
    href="">http://www.amibroker.com/login.html
     
    This release brings huge improvement to AFL: 
    for and while loops and 
    if-else flow control statements.
     
    Native AFL loops run 2..3 times faster than JScript 
    (according to my
    preliminary tests on arrays with 1000-5000 
    bars)
     
    For more details and example code please read the 
    following "READ ME" text.
     
    NOTE: from now on all beta releases will be available to 
    registered
    users only (in member area).
     
    Best regards,Tomasz 
    Janeczkoamibroker.com
     
     
    
    AmiBroker 4.31.0 Beta Read Me
    April 13, 2003 10:38 
    THIS IS AN EARLY BETA VERSION OF THE SOFTWARE. EXPECT BUGS 
    !!!
    AGAIN: THIS IS AN EARLY BETA VERSION OF THE SOFTWARE. EXPECT BUGS 
    !!!
    Backup your data files and entire AmiBroker folder 
    first!
    INSTALLATION INSTRUCTIONS
    IMPORTANT: This archive is update-only. You have to install full 
    version 4.30 first. 
    Just run the installer and follow the instructions. 
    Then run AmiBroker. You should see "AmiBroker 4.31.0 beta" written in the 
    About box.
    CHANGES FOR VERSION 
    4.31.0 (as compared to 4.30.0)
    
      Workspace window uses "icon font" set in the Windows settings instead 
      of hard coded Tahoma 8 
      for better readability and ClearType(tm) compatibility on WinXP, all 
      dialog windows use now 'MS Shell Dlg' face name that maps to standard MS 
      Sans Serif on Win 9x/Me/NT and Tahoma on Win 2K and XP. 
      rewritten AFL parser, now formula is parsed and coverted to syntax 
      tree and then interpreted. This would allow further improvements including 
      compilation. This allowed also to add loops/if-else statements. 
      implemented IF/ELSE statement, WHILE and FOR loops:The same basic 
      'for' loop in AFL is 2..3 times faster than in JScriptSyntax follows 
      C++/JScript style: 
      while( conditional_expression ) statement;
      for( initializer_part; conditional_expression; iterator_part ) 
      statement;
      if( conditional_expression ) statement;
      if( conditional_expression ) 
      statement;elsestatement;
      
      implemented compound statements: these are blocks of statements 
      enclosedin opening and closing curly brace 
      {statement1;statement2;...statementN;}
      compound statement can appear anywhere when simple statement can.
      For example:
      i = 10;while( i < 20 ){Plot( MA( Close, i ), "MA" 
      + WriteVal( i, 0 ), colorBlack + i );i = i + 1;}
      
      implemented C-style postfix and prefix increment/decrement 
operators
      i = 10;WriteIf( i++ );WriteIf( ++i );WriteIf( i 
      );
      
      implemented array element access (subscript) operator []:
      WriteVal( Close[ 0 ] ); // prints the first bar of close 
      array
      /* a sample low-level implementation of exponential moving 
      average in AFL */
      myema[ 0 ] = Close[ 0 ];
      for( i = 1; i < BarCount; i++ ){myema[ i ] = 0.1 * 
      Close[ i ] + 0.9 * myema[ i - 1 ];}
      
      added built-in constant 'BarCount' that returns number of bars 
      available in arrays (the number of elements of array)When QuickAFL is 
      turned on it may be less than true number of bars because QuickAFL feature 
      attempts to use only visible bars (and few before). You can control how 
      many bars the formula requires using SetBarsRequired() function
      
      implemented infinite-loop protection. Nice if you forgot to increment 
      counter variable in 'for' loop :-)
      
      tab key now works without need to press ALT/CTRL in AFL editors
      
      added C-like synonyms for logical ADD/OR/NOT: &&, ||, ! 
      /* a sample low-level implementation of Profit-target stop in 
      AFL: */
      Buy = Cross( MACD(), Signal() );
      priceatbuy=0;
      for( i = 0; i < BarCount; i++ 
      ){     if( priceatbuy == 0 && 
      Buy[ i ] )      priceatbuy = BuyPrice[ i 
      ];
           if( priceatbuy > 0 && 
      SellPrice[ i ] > 1.1 * priceatbuy 
      )     {       Sell[ 
      i ] = 1;       SellPrice[ i ] = 1.1 
      * priceatbuy;       priceatbuy = 
      0;     }     else       Sell[ 
      i ] = 0;}
      /* sample EMA rainbow */
      Plot( Close, "Price", colorBlack, styleCandle );for( Range = 
      15; Range < 100; Range++ )   Plot( EMA( Close, Range 
      ), "MA"+WriteVal(Range,0), colorRose + Range % 8, styleNoLabel 
      );
      
    HOW TO REPORT BUGS
    If you experience any problem with this beta version please send detailed 
    description of the problem (especially the steps needed to reproduce it) to 
    bugs@xxxxxxxxxxxxx 
  Send 
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