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How
about another error message if you attempt to use the IIF other than as a
function?
<FONT face=Arial color=#0000ff
size=2>
<FONT face=Arial color=#0000ff
size=2>d
<FONT
face=Tahoma size=2>-----Original Message-----From: Tomasz Janeczko
[mailto:amibroker@xxxxxx] Sent: Monday, April 14, 2003 4:15
AMTo: amibroker@xxxxxxxxxxxxxxxSubject: Re: [amibroker]
AmiBroker 4.31.0 BETA Examples
Hello,
Next beta will issue an error in case you attempt to use
array
as condition in if/else.
Best regards,Tomasz Janeczkoamibroker.com
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
Tomasz Janeczko
To: <A title=amibroker@xxxxxxxxxxxxxxx
href="">amibroker@xxxxxxxxxxxxxxx
Sent: Monday, April 14, 2003 9:54
AM
Subject: 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 title=jcasavant@xxxxxxxxxxxx
href="">Jayson
To: <A
title=amibroker@xxxxxxxxxxxxxxx
href="">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 face=Arial color=#0000ff
size=2><IMG alt="" hspace=0
src="gif00209.gif" align=baseline
border=0>
<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
title=amibroker@xxxxxxxxxxxxxxx
href="">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<FONT
size=2>>
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: <A
href=""><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
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