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RE: [amibroker] AmiBroker 4.31.0 BETA Examples



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Thank 
you Tomasz.
 Jayson 
<FONT face=Tahoma 
size=2>-----Original Message-----From: Tomasz Janeczko 
[mailto:amibroker@xxxxxx]Sent: Monday, April 14, 2003 1:19 
PMTo: amibroker@xxxxxxxxxxxxxxxSubject: Re: [amibroker] 
AmiBroker 4.31.0 BETA Examples
Hello,
 
These for / while loops are IDENTICAL to those offered by C / 
JScript
so any C / JScript book will do, including on-line resources 
like:
 
<A 
href="">http://msdn.microsoft.com/library/default.asp?url="";><A 
href="">
 
Best regards,Tomasz Janeczkoamibroker.com
<BLOCKQUOTE 
>
  ----- Original Message ----- 
  <DIV 
  >From: 
  <A href="" 
  title=jcasavant@xxxxxxxxxxxx>Jayson 
  To: <A 
  href="" 
  title=amibroker@xxxxxxxxxxxxxxx>amibroker@xxxxxxxxxxxxxxx 
  Sent: Monday, April 14, 2003 4:01 
PM
  Subject: RE: [amibroker] AmiBroker 4.31.0 
  BETA Examples
  
  <SPAN 
  class=732395813-14042003>Thank you Tomasz. I have obviously gone from being 
  fairly high on the learning curve to Newbie in just one week end 
  :(
  <SPAN 
  class=732395813-14042003> 
  <SPAN 
  class=732395813-14042003>Could you recommend a beginner level book that may 
  help some of us get up to speed with this new upgrade? I might as well be 
  reading Japanese , but I don't want to start THAT thread again 
  :))
   Jayson 
  <FONT face=Tahoma 
  size=2>-----Original Message-----From: Tomasz Janeczko 
  [mailto:amibroker@xxxxxx]Sent: Monday, April 14, 2003 3:54 
  AMTo: amibroker@xxxxxxxxxxxxxxxSubject: Re: [amibroker] 
  AmiBroker 4.31.0 BETA Examples
  Hello,
   
  While IIF works on ARRAY,
   
  if/else works on INDIVIDUAL number/boolean (element of the 
  array).
   
  Therefore you should write either
   
  a1 = IIF( C > Ref( C, -1 ), 1, 0 );
   
  (or even: a1 = C > Ref( C, -1 );
   
  or iterate:
   
  for( i = 1; i < BarCount; i++ )
  {
     if  ( Close[ i ] > Close[ i - 1 ] 
  )
         a1[ i ] = 
  1;
     else
         a1[ i ] = 
  0;
  }
   
   
  It is important to understand that IIF is a FUNCTION that 
  works on arrays,
  while if/else is control flow STATEMENT.
  Function just evaluates all arguments and returns 
  value(s)
  Control flow statement changes program flow.
   
  This is fundamental difference.
   
  Best regards,Tomasz Janeczkoamibroker.com
  <BLOCKQUOTE 
  >
    ----- Original Message ----- 
    <DIV 
    >From: 
    <A href="" 
    title=jcasavant@xxxxxxxxxxxx>Jayson 
    To: <A 
    href="" 
    title=amibroker@xxxxxxxxxxxxxxx>amibroker@xxxxxxxxxxxxxxx 
    Sent: Monday, April 14, 2003 7:55 
    AM
    Subject: RE: [amibroker] AmiBroker 
    4.31.0 BETA Examples
    
    <SPAN 
    class=934273705-14042003>Steve,
    <SPAN 
    class=934273705-14042003>Your example makes sense yet does not seem to work 
    for me. Else seems to be ignored . Using the IIF this would simply be 
    ......
    <SPAN 
    class=934273705-14042003>a1=iif(c>ref(c,-1),1,0);  I am certainly 
    missing something here.... your input appreciated..
    <SPAN 
    class=934273705-14042003>jayson
    <SPAN 
    class=934273705-14042003> 
    <SPAN 
    class=934273705-14042003><FONT color=#0000ff face=Arial 
    size=2><IMG align=baseline alt="" border=0 
    hspace=0 src="gif00206.gif">
    <SPAN 
    class=934273705-14042003> 
     Jayson 
    <FONT face=Tahoma 
    size=2>-----Original Message-----From: Steve Dugas 
    [mailto:sjdugas@xxxxxxxxx]Sent: Sunday, April 13, 2003 11:25 
    AMTo: amibroker@xxxxxxxxxxxxxxxSubject: Re: 
    [amibroker] AmiBroker 4.31.0 BETA Examples
    Hi Ken,
     
    I think the concept of loops and if-then-else is the same 
    in all languages. I imagine you  could read up on it at many 
    websites (e.g. - MSDN scripting site). Once you grasp the concept, it is 
    just a matter of using AFL syntax. You would probably use it mostly for 
    iterating your arrays if you wanted to do that. Here is a simple pseudo-code 
    - try coding it in AFL:
     
    For (SecondBar to LastBar)
      If (Today's Close > Yesterday's 
    Close)
        MyArray = 1
      Else
        MyArray = 0
    Plot MyArray
     
    Of course, please feel free to ask for help!
     
    Steve
     
    ----- Original Message ----- 
    <BLOCKQUOTE 
    >
      <DIV 
      >From: 
      Tomasz 
      Janeczko 
      To: <A 
      href="" 
      title=amibroker@xxxxxxxxxxxxxxx>amibroker@xxxxxxxxxxxxxxx 
      Sent: Sunday, April 13, 2003 10:39 
      AM
      Subject: Re: [amibroker] AmiBroker 
      4.31.0 BETA Examples
      
      Ken,
       
      Very nice story :-)
       
      As per your request, attached is a Parabolic SAR formula 
      
      that I have rewritten from JScript version
      (<A 
      href=""><FONT 
      size=2>http://www.amibroker.com/library/detail.php?id=242<FONT 
      size=2>)
       
       
      Best regards,Tomasz 
      Janeczkoamibroker.com
      ----- Original Message ----- 
      From: "Ken Close" <<A 
      href=""><FONT 
      size=2>closeks@xxxxxxxx>
      To: <<A 
      href=""><FONT 
      size=2>amibroker@xxxxxxxxxxxxxxx>
      Sent: Sunday, April 13, 2003 4:05 PM
      Subject: RE: [amibroker] AmiBroker 4.31.0 BETA 
      Examples
      > Tomasz:> 
      > As always, you have good sound advice.  
      However......> > You say, "Here is a fast sports car, very 
      versatile and powerful.  It> has 7 forward gears, but if you 
      are a beginner, do not worry....always> stay in maximum of 4th 
      gear. Plenty of nice driving is possible in 4th> gear.   
      Wait until you become more experienced before you try gears 5,> 6, 
      and 7."> > I say, "Thank you for providing such a nimble 
      sports car, but I am in a> race, and I do not think I can finish 
      even 10th in this race, until I> get out past 4th gear.  If 
      you or others would just provide some more> examples of how to use 
      5th and 6th gear, then I could more confidently> try them. Maybe 
      even copy your use of them. Then, probably, I will have> enough 
      experience to try 7th gear on my own."> > More examples is 
      all I am asking for....my objective is not to stay in> 4th 
      gear.> > Thanks,> > Ken> > 
      -----Original Message-----> From: Tomasz Janeczko 
      [mailto:amibroker@xxxxxx] > Sent: Sunday, April 13, 2003 9:47 
      AM> To: <FONT 
      size=2>amibroker@xxxxxxxxxxxxxxx> Subject: 
      Re: [amibroker] AmiBroker 4.31.0 BETA Examples> > 
      Ken,> > > First, additional kudos to Tomasz for another 
      step-jump in capability> of> > Amibroker.> Thank 
      you.> > > Second, a caution, in marketing terms, of 
      having capability that is so> > hard to apply for 
      "non-programmers", beginners, and non-technical> types> > 
      that the extra capability is viewed not as an advantage or 
      benefit,> but> > just the opposite.> > The 
      beginners don't really need to jump into deep water right from> the 
      start as AFL still supports "old-way" of work.> > When you 
      write> > TypicalPrice = (H+L+C) /3;> > it 
      still operates on H, L, C arrays and produces array so no> looping 
      is needed.> > New features are added as 'extra' stuff and do 
      not> change the way old statements work.> > > I 
      apologize - but may speak for many hidden lurkers - that I have 
      just> > mastered the idea that "every AFL statement only 
      executes once", but> now> > I must scramble to reorient 
      my brain for repeated iterations thru AFL> > statements.> 
      > See above - you don't need really to write loops if you don't 
      want them.> All previously written code will execute the same way 
      as before.> > Unless you use a while and/or for loop nothing 
      has really changed.> > So, you don't really need to 
      "re-orient your brain" :-)> > You can view new features as a 
      replacement of JScript/VBScript.> You may use these new features 
      only when you needed to use> scripting in previous 
      versions.> > Best regards,> Tomasz Janeczko> 
      amibroker.com> > > Send BUG REPORTS to <A 
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