R help - Aug 2009 - create list entry from variable

Hi;

assume i<-10

how can  i create a list having key=10 and value=11

list(i=11) generates a list with 

'i'
[1] 11

and not 

10
[1] 11

any help?

Thanks

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Try this:

l <- list(i + 1)
names(l) <- i


On Mon, Aug 24, 2009 at 4:01 PM, rami jiossy <sramij@hotmail.com> wrote:
>
> Hi;
>
> assume i<-10
>
> how can  i create a list having key=10 and value=11
>
> list(i=11) generates a list with
>
> 'i'
> [1] 11
>
> and not
>
> 10
> [1] 11
>
> any help?
>
> Thanks
>
> _________________________________________________________________
>
>  Facebook.
>
> :ON:WL:en-US:SI_SB_facebook:082009
>        [[alternative HTML version deleted]]
>
> ______________________________________________
> 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.
>


-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

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> -----Original Message-----
> From: r-help-bounces at r-project.org 
> [mailto:r-help-bounces at r-project.org] On Behalf Of rami jiossy
> Sent: Monday, August 24, 2009 12:01 PM
> To: R-Help
> Subject: [R] create list entry from variable
> 
> 
> Hi;
> 
> assume i<-10
> 
> how can  i create a list having key=10 and value=11
> 
> list(i=11) generates a list with 
> 
> 'i'
> [1] 11
> 
> and not 
> 
> 10
> [1] 11
> 
> any help?
You can use [[<- with a character argument for the key
   > myList<-list()
   > i<-"10"
   > myList[[i]] <- 11
   > myList
   $`10`
   [1] 11
If you use an integer argument, as in,
    myList[[10]] <- 11
then 11 becomes the 10'th element of myList, not the
element named '10'.

myList[[i]] <- NULL
will remove the element.

Bill Dunlap
TIBCO Software Inc - Spotfire Division
wdunlap tibco.com 
> 
> Thanks
> 
> _________________________________________________________________
> 
>  Facebook.
> 
> :ON:WL:en-US:SI_SB_facebook:082009
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> R-help at 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.
>