R help - Apr 2007 - How to return more than one variable from function

Dera R users,
I have written a function which computes variance, sd,
r^2, R^2adj etc. But i am not able to return all of
them in return statement.
 So how to return more than one variable from
function.  In C i used to return by pointers etc. is
there any way like that.

Thanks in advance.

use a 'list' as the return value containing the values you want
returned.

x<- function(){
.....
list(val1=a, val2=b, val3=c)
}

On 4/20/07, vinod gullu <vinodkgul at yahoo.com>
wrote:
> Dera R users,
> I have written a function which computes variance, sd,
> r^2, R^2adj etc. But i am not able to return all of
> them in return statement.
>  So how to return more than one variable from
> function.  In C i used to return by pointers etc. is
> there any way like that.
>
> Thanks in advance.
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?

?list


----- Original Message ----
From: vinod gullu <vinodkgul@yahoo.com>
To: r-help@stat.math.ethz.ch
Sent: Friday, April 20, 2007 5:00:45 PM
Subject: [R] How to return more than one variable from function


Dera R users,
I have written a function which computes variance, sd,
r^2, R^2adj etc. But i am not able to return all of
them in return statement.
So how to return more than one variable from
function.  In C i used to return by pointers etc. is
there any way like that.

Thanks in advance.

______________________________________________
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.


	[[alternative HTML version deleted]]

Hi,
> I have written a function which computes variance, sd,
> r^2, R^2adj etc. But i am not able to return all of
> them in return statement.
You can return a vector, or a list.

For example :

func <- function() {
  ...
  result <- list(variance=3, sd=sqrt(3))
  return(result)  # you can omit this
}
 
a <- func()
a$variance
a$sd      

HTH,

Julien

-- 
Julien Barnier
Groupe de recherche sur la socialisation
ENS-LSH - Lyon, France