Hi Tal,

You're probably right, but I think it's never a waste to get diverse solutions :)

Cheers,
Ivan


Le 20 mai 2010 à 19:26, Tal Galili a écrit :

> Hi Ivan,
> 
> I am not sure if the poster (arnaud) intended for a list() object (although that's what he wrote, I suspect he intended for a vector - hence my proposed solution).
> 
> Cheers,
> Tal
> 
> 
> ----------------Contact Details:-------------------------------------------------------
> Contact me: Tal.Galili@gmail.com |  972-52-7275845
> Read me: www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) | www.r-statistics.com (English)
> ----------------------------------------------------------------------------------------------
> 
> 
> 
> 
> On Thu, May 20, 2010 at 7:20 PM, Ivan Calandra <ivan.calandra@uni-hamburg.de> wrote:
> Hi,
> 
> the problem is not about the environment, but about the
> 
>    paste(c("tot", i), collapse = "")
> which is not recognized as an object.
> Maybe assign() could do the trick
> 
> You could also do it this way (though it's not exactly what you want, but it might be better):
> toto <- function(x,y){
>  tot <- vector(mode="list", length=(y-x+1))   ##create an empty list of correct length
> 
>  for (i in x:y) {
>    tot[[i]] <- (i*2)   ##store each value into each element of the list
>  }
>  return(tot)  ##return the list
> }
> 
> HTH,
> Ivan
> 
> 
> 
> 
> Le 5/20/2010 17:54, arnaud Gaboury a écrit :
> 
> Dear group,
> 
> I am trying to write functions, but as a beginner, everything is not so
> obvious.
> Let's say I want the results in a list of elemts like this :
> tot1, tot2, etc
> 
> Here is a function:
> 
> toto<-
> function(x,y)
> 
> {
> 
> for(i in x:y){
> 
> paste(c("tot",i),collapse="")<-(i*2)
> 
> }
> }
> 
> If I type this :
>   
> toto(1,5)
>     
> I get this message error:
> Error in paste(c("tot", i), collapse = "")<- (i * 2) :
>   target of assignment expands to non-language object
> 
> How can I write it to get the result I want (i.e tot1, tot2... with tot1=2,
> tot2=4...) in my environment?
> 
> TY for any help
> 
> ______________________________________________
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
> 
>   
> 
> -- 
> Ivan CALANDRA
> PhD Student
> University of Hamburg
> Biozentrum Grindel und Zoologisches Museum
> Abt. Säugetiere
> Martin-Luther-King-Platz 3
> D-20146 Hamburg, GERMANY
> +49(0)40 42838 6231
> ivan.calandra@uni-hamburg.de
> 
> **********
> http://www.for771.uni-bonn.de
> http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php
> 
> 
> ______________________________________________
> R-help@r-project.org 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.
> 



--
Ivan CALANDRA
PhD Student
University of Hamburg
Biozentrum Grindel und Zoologisches Institut und Museum
Martin-Luther-King-Platz 3
D-20146 Hamburg, GERMANY
+49(0)40 42838 6231
ivan.calandra@uni-hamburg.de

**********
http://www.for771.uni-bonn.de
http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php






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