[R] multiple return

[ONKELINX, Thierry]

Put the return values in a vector or list

somma <- function (a, b) {
   c <- a+b
   return (c(a = a, b = b, c = c))
}

somma(5,7)
 a  b  c 
 5  7 12 


somma <- function (a, b) {
   c <- a+b
   return (list(a = a, b = b, c = c))
}

somma(5,7)
$a
[1] 5

$b
[1] 7

$c
[1] 12

Cheers,

Thierry
------------------------------------------------------------------------
----
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium
tel. + 32 54/436 185
Thierry.Onkelinx op inbo.be
www.inbo.be 

Do not put your faith in what statistics say until you have carefully
considered what they do not say.  ~William W. Watt
A statistical analysis, properly conducted, is a delicate dissection of
uncertainties, a surgery of suppositions. ~M.J.Moroney

 

> -----Oorspronkelijk bericht-----
> Van: r-help-bounces op stat.math.ethz.ch 
> [mailto:r-help-bounces op stat.math.ethz.ch] Namens Manuele Pesenti
> Verzonden: vrijdag 22 juni 2007 12:38
> Aan: r-help op stat.math.ethz.ch
> Onderwerp: [R] multiple return
> 
> Dear User,
> what's the correct way to obtain a multiple return from a function?
> 
> for example creating the simple function:
> 
> somma <- function (a, b) {
>   c <- a+b
>   return (a, b, c)
> }
> 
> when I call it, it runs but returns the following output:
> 
> > somma(5, 7)
> $a
> [1] 5
> 
> $b
> [1] 7
> 
> $c
> [1] 12
> 
> Warning message:
> return multi-argomento sono deprecati in: return(a, b, c) 
> 
> i.e. multi-return is deprecated...
> 
> thanks a lot
> best regards
> 	Manuele
> 
> --
> Manuele Pesenti
> 	manuele op inventati.org
> 	amicogodzilla op jabber.linux.it
> 	http://mpesenti.polito.it
> 
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