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RE: [amibroker] AmiBroker 4.31.0 BETA Examples



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Thank 
you Steve, I will see if I can locate a copy.
<SPAN 
class=082024904-16042003> 
<SPAN 
class=082024904-16042003>Regards,
 Jayson 
<FONT face=Tahoma 
size=2>-----Original Message-----From: Steve Dugas 
[mailto:sjdugas@xxxxxxxxx]Sent: Tuesday, April 15, 2003 11:22 
PMTo: amibroker@xxxxxxxxxxxxxxxSubject: Re: [amibroker] 
AmiBroker 4.31.0 BETA Examples
Hi Jayson,
 
Sorry to offer the help and then not be around to follow 
through on it. But, Monday seems to roll around almost every week these days, 
and then its off to work again. Better for you though - TJ filled in for 
me  : - )
 
I'm not sure what kind of book you would like, but since TJ 
seems to follow C++ syntax, I can recommend a C++ book that I found to be very 
good (pretty big though - over 1000 pages). It is very thorough and easy to 
understand - definitely geared for beginners in my opinion. It is "C++ Primer 
Plus" by Stephen Prata. I think you could probably just read up on the items you 
are interested in if you aren't interested in learning the whole language. Be 
careful because it seems that there are a couple of other C++ books that 
call themselves "primers", but are definitely NOT for beginners. Especially 
stay away from Stanley Lippman's book, at least until you have some experience 
(take it from me....please!).
 
Steve
 
<BLOCKQUOTE 
>
  ----- Original Message ----- 
  <DIV 
  >From: 
  <A href="" 
  title=jcasavant@xxxxxxxxxxxx>Jayson 
  To: <A 
  href="" 
  title=amibroker@xxxxxxxxxxxxxxx>amibroker@xxxxxxxxxxxxxxx 
  Sent: Monday, April 14, 2003 10:01 
  AM
  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="gif00213.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> 
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