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I understand and agree, which is why I responded to his post and not
yours ...
The point I was trying to make was that if nested IF or IFF
statements are required, the former of which he seems to have no
trouble understanding, then the latter is no more complicated.
--- In amibroker@xxxxxxxxxxxxxxx, Graham <kavemanperth@xxx> wrote:
>
> What I was actually trying to point out was that if the result is
true of
> all the conditions are true you do not even need to use IF or IIF
> Even if one of the conditions need to be false to give true result
you can
> do this, eg if C2 needed to be false
>
> Result = Trigger and C1 and C2==0;
>
> --
> Cheers
> Graham Kav
> AFL Writing Service
> http://www.aflwriting.com
>
>
> On 26/08/07, Fred Tonetti <ftonetti@xxx> wrote:
> >
> >
> >
> > Forgetting for a minute which form is array oriented and which
isn't, I'm
> > not sure why you see that much distinction in terms of simplicity
or
> > complexity between a nested if this ?
> >
> >
> >
> > Result = False;
> >
> >
> >
> > If (Trigger == True)
> >
> > {
> >
> > If (C1 == True)
> >
> > {
> >
> > If (C2 == True)
> >
> > {
> >
> > Result = True;
> >
> > }
> >
> > }
> >
> > }
> >
> >
> >
> > ? and a nested iif like this ?
> >
> >
> >
> > Result = iif(Trigger,
> >
> > iif(C1,
> >
> > iif(C2, True, False),
> >
> > False),
> >
> > False);
> >
> >
> > ------------------------------
> >
> > *From:* amibroker@xxxxxxxxxxxxxxx
[mailto:amibroker@xxxxxxxxxxxxxxx] *On
> > Behalf Of *lifes_student_1
> > *Sent:* Saturday, August 25, 2007 10:25 PM
> > *To:* amibroker@xxxxxxxxxxxxxxx
> > *Subject:* [amibroker] Re: getting an error in my if statement
> >
> >
> >
> > using iif(this and that and another, 1,0) wouldn't be too bad. It
> > would (for me) get really messy and hard to read to try nested iif
> > statements though. I appreciate your help.
> >
> > --- In amibroker@xxxxxxxxxxxxxxx <amibroker%40yahoogroups.com>,
Graham
> > <kavemanperth@> wrote:
> > >
> > > there are different ways to achieve things, for simple
conditions to
> > > give true/false result you can simply use statement with
OR/AND. The
> > > following assigns true to results if all 3 conditions are true
on
> > the
> > > same bar
> > >
> > > Result = Trigger AND C1 AND C2;
> > >
> > > to assign values to the variable for true/false result, these
values
> > > can be arrays are scalar
> > >
> > > Result = iif( Trigger AND C1 AND C2, A, B );
> > >
> > > Nested IIF can also allow you to work through combinations of
the
> > > conditions to give different resulting values. Just by placing
the
> > > more stringent first and work from there
> > >
> > > Result = iif( Trigger AND C1 AND C2, A, iif( Trigger AND C1, B,
iif(
> > > Trigger AND C2, C, iif( C1 and C2, D, E ))));
> > >
> > > These are much easier and straightforward than looping. I only
use
> > > loops if the results I want depend on previous values of the
same
> > > array for the current value, or to isolate a particular
repeating
> > > occurence to only use the first occurence and ignore the rest
(where
> > > other simple methods do not work). Loops can slow down the
running
> > of
> > > AFL and best to be avoided unless really necessary. They can
also
> > tie
> > > your brain up in knots getting the logic correct when a simple
> > method
> > > is easier and faster.
> > >
> > >
> > > --
> > > Cheers
> > > Graham Kav
> > > AFL Writing Service
> > > http://www.aflwriting.com
> > > On 26/08/07, lifes_student_1 <suedeuno@> wrote:
> > > > It's a bit more complicated than my example. I need to check
for
> > > > several cases and I would generally use an if statement for
> > something
> > > > like this. Something like:
> > > >
> > > > result = false;
> > > > if (trigger == true)
> > > > {
> > > > if (c1 == true)
> > > > {
> > > > if (c2 == true)
> > > > {
> > > > result = true;
> > > > }
> > > > }
> > > > }
> > > >
> > > > --- In amibroker@xxxxxxxxxxxxxxx <amibroker%
40yahoogroups.com>, Graham
> > <kavemanperth@> wrote:
> > > > >
> > > > > Not knowing what you are trying to do why not try the
simpler
> > and
> > > > > faster IIF function
> > > > >
> > > > > --
> > > > > Cheers
> > > > > Graham Kav
> > > > > AFL Writing Service
> > > > > http://www.aflwriting.com
> > > > >
> > > > >
> > > > >
> > > > > On 26/08/07, lifes_student_1 <suedeuno@> wrote:
> > > > > > Thanks. Why can't I do the following though that should
> > result in
> > > > a
> > > > > > boolean:
> > > > > >
> > > > > > color = colorLime;
> > > > > > color2 = colorRed;
> > > > > > i1 = colorLime;
> > > > > > c1 = ((i1 == color OR i1 == color2));
> > > > > > if (c1 == true)
> > > > > > {...
> > > > > >
> > > > > >
> > > > > > This doesn't work. I guess I'm not used to AFL.
> > > > > >
> > > > > >
> > > > > >
> > > > > > --- In amibroker@xxxxxxxxxxxxxxx <amibroker%
40yahoogroups.com>,
> > "Thomas Z." <tzg@> wrote:
> > > > > > >
> > > > > > > You need a loop and then you could write if(barsback[i]
< 6)
> > > > > > >
> > > > > > > The other way would be to use IIF()
> > > > > > >
> > > > > > > Regards
> > > > > > > Thomas
> > > > > > > www.patternexplorer.com
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > From: amibroker@xxxxxxxxxxxxxxx <amibroker%
40yahoogroups.com>
> > > > [mailto:amibroker@xxxxxxxxxxxxxxx <amibroker%
40yahoogroups.com>]
> > > > > > On Behalf
> > > > > > > Of lifes_student_1
> > > > > > > Sent: Saturday, August 25, 2007 8:28 PM
> > > > > > > To: amibroker@xxxxxxxxxxxxxxx <amibroker%
40yahoogroups.com>
> > > > > > > Subject: [amibroker] getting an error in my if statement
> > > > > > >
> > > > > > > condition1 = cross(close, ma(close,20));
> > > > > > > barsback = BarsSince(condition1 == true);
> > > > > > > if(barsback < 6)
> > > > > > > {...
> > > > > > >
> > > > > > > I'm getting error 6 on barsback in if statement.
condition1
> > is
> > > > set
> > > > > > and
> > > > > > > works as I've tested it elsewhere. What am I doing
wrong?
> > > > > > >
> > > > > > > (Condition in IF, WHILE, FOR statements has to be
Numeric or
> > > > > > Boolean
> > > > > > > type. You cannot use an array here....)
> > > > > > >
> > > > >
> > > >
> > > >
> > > >
> > > >
> > > > Please note that this group is for discussion between users
only.
> > > >
> > > > To get support from AmiBroker please send an e-mail directly
to
> > > > SUPPORT {at} amibroker.com
> > > >
> > > > For NEW RELEASE ANNOUNCEMENTS and other news always check
DEVLOG:
> > > > http://www.amibroker.com/devlog/
> > > >
> > > > For other support material please check also:
> > > > http://www.amibroker.com/support.html
> > > >
> > > > Yahoo! Groups Links
> > > >
> > > >
> > > >
> > > >
> > >
> >
> >
> > ------------------------------
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> >
>
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