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Perhaps Herman was confused because the basic question could be answered
just by looking in the help file. Herman probably thought you wanted
something more (especially since you included [ ] in your example, implying
you wanted to work on single array elements.
>From Help:
iif( EXPRESSION, TRUE_PART, FALSE_PART )
Actually this is used by making a new variable equal to the result of the
IIF function for the entire array.
NewVarName = IIF(Expression, TruePart, FalsePart);
There is usually no equivalence set in the True and False parts, just
calculations, the result of which is assigned to the NewVarName.
_____
From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf
Of Ton Sieverding
Sent: Wednesday, February 14, 2007 2:58 PM
To: amibroker@xxxxxxxxxxxxxxx
Subject: Re: [amibroker] AFL syntax for nested IIF ?
Thanks Herman. I know that in programmers land there are a thousand possible
ways to Rome. I even can put all the to do's in a function and then call the
function from within the IIF etc. etc. But that's not how it should be
programmed and that's not my question. I just don't know the syntax of the
double IIF in AFL and would like to know that. The frustrating thing for me
is that I cannot find it in the AFL manual. Don't forget that in AFL the
double IIF has a special function. It made to handle arrays. So there is no
need for a loop ...
Ton.
----- Original Message -----
From: Herman <mailto:psytek@xxxxxxxx>
To: amsiev <mailto:amibroker@xxxxxxxxxxxxxxx>
Sent: Wednesday, February 14, 2007 7:23 PM
Subject: Re: [amibroker] AFL syntax for nested IIF ?
Not sure what you are trying to do but often using a loop may simplify
things:
FirstVisibleBar = Status( "FirstVisibleBar" );
Lastvisiblebar = Status("LastVisibleBar");
for( b = Firstvisiblebar; b < Lastvisiblebar AND b < BarCount; b++)
{
if( BarNumAct[b] <= 21 )
{
Highs[b] = C[b];
Lows[b] = C[b];
Range[b] = (H[b] - L[b])/2;
}
}
herman
Wednesday, February 14, 2007, 12:39:24 PM, you wrote:
> What's the syntax in AFL for a double IF with following structure ?
> IF True
> Do This ;
> Do That ;
> Do anything;
> Endif
> I'm working with arrays so I must use the double IF but my problem is
> that I just cannot get the correct syntax. There are in fact two
> problemens. First I only want the IIF to do something when the
> condition is true. Therefore I don't want the third part in case the
> IIF is false or the 'Do if false'. Second I want the IIF to do
> several things. Not just one. Following syntax is wrong. So what's
> the correct one ?
> IIf(BarNumAct<=21,
> {
> Highs[BarNumAct] = Close;
> Lows[BarNumAct] = Close;
> Range[BarNumAct] = (High - Low)/2;
> }
> ,"");
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