[R] printing a variable name in a for loop

[David Barron]

This would do it:

> v1 <- 5
> v2 <- 6
> v3 <- 7

> vns <- paste("v",1:3,sep="")
> for (i in 1:length(vns)) cat("Hello", vns[i], get(vns[i]), "World\n", sep=",")

Hello,v1,5,World
Hello,v2,6,World
Hello,v3,7,World


On 24/09/06, Suzi Fei <feis at ohsu.edu> wrote:
> Hello,
>
> How do you print a variable name in a for loop?
>
> I'm trying to construct a csv file that looks like this:
>
>
>         Hello, variable1, value_of_variable1, World,
>         Hello, variable2, value_of_variable2, World,
>         Hello, variable3, value_of_variable3, World,
>
>
> Using this:
>
>         for (variable in list(variable1, variable2, variable3)){
>
>                 cat("Hello,", ???variable???, variable, ", World,")
>         }
>
> This works fine if I'm trying to print the VALUE of variable, but I want to
> print the NAME of variable as well.
>
> Thanks,
> Suzi
>
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-- 
=================================
David Barron
Said Business School
University of Oxford
Park End Street
Oxford OX1 1HP