I would like to enter something like the following pseudocode in PD:

if ($f1<$f3) {
  output (0);
} else {
  if($f1-$f3<=$f2) {
    output (($f1-$f3)/$f2);
  } else {
    output(1.0);
  }
}

So, I've tried to enter this expr if construction:

[ expr if ($f1<$f3, 0, if( ($f1-$f3<=$f2, ($f1-$f3)/$f2, 1.0) )) ]

However, PD will not accept this, and it returns:

expr: syntax error: illegal comma

,
(
$f1 
-
$f3 
) 
/
$f2 
,
1.000000 


expr: syntax error
 expr if ($f1<$f3 , 0 , if( ($f1-$f3<=$f2 , ($f1-$f3)/$f2 , 1.0) ))
... couldn't create

Is there a syntax where I can use nested "if"s in an [expr] object?

@sdaau_ml This works: [expr if ($f1<$f3, 0, if( ($f1-$f3)<=$f2, ($f1-$f3)/$f2, 1.0) )]