[R] Placing brackets around the values in a data frame

[David Winsemius]

On Jul 27, 2011, at 2:00 PM, Abraham Mathew wrote:

> Lets say I have the following data frame.
>
> df = data.frame(word = c("David", "James", "Sara", "Jamie", "Jon"))
> df
>
> I was trying to place brackets , [ ] , around each string.
>
> I'll be exporting it with write.table and quotes=FALSE, so it will
> eventually look like:
>
> [David]
> [James]
> [Sara]
> ....
>
>
> Can anyone help with this task?

?paste


>
> I'd like to avoid regular expressions, but I haven't been able to  
> use the
> paste function
> to get the desired result.

Hmm. Why not?

df$word <- paste("[", df$word, "]", sep="")  # seems to work fine.

>
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David Winsemius, MD
West Hartford, CT