[R] creating names for lists

Henrique Dallazuanna wwwhsd at gmail.com
Fri Jul 18 16:11:14 CEST 2008


foo <- list(3)
names(foo) <- paste(a, b)

On Fri, Jul 18, 2008 at 11:03 AM,  <tolga.i.uzuner at jpmorgan.com> wrote:
> Dear R Users,
> How can I create names for lists within a function where the name itself
> is a function of several variables ?
>> a<-1
>> b<-2
>> paste(a,b)
> [1] "1 2"
>> foo<-list(paste(a,b)=3) <<<===== DOES NOT WORK
> Error: unexpected '=' in "foo<-list(paste(a,b)="
>> eval(paste(a,b))
> [1] "1 2"
>> foo<-list(eval(paste(a,b))=3) <<<===== NEITHER DOES THIS
> Error: unexpected '=' in "foo<-list(eval(paste(a,b))="
>> foo<-list("1 2"=3)
>> foo
> $`1 2`
> [1] 3
> The last example above is the desired outcome, but the a and the b
> variable will of course take on different values through the execution of
> the function.
> Thanks in advance,
> Tolga
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Henrique Dallazuanna
25° 25' 40" S 49° 16' 22" O

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