[R] matching-case sensitivity

[Thomas Lumley]

On Tue, 26 Aug 2003, Jablonsky, Nikita wrote:

> Hi All,
>
> I am trying to match two character arrays (email lists) using either
> pmatch(), match() or charmatch() functions. However the function is
> "missing" some matches due to differences in the cases of some letters
> between the two arrays. Is there any way to disable case sensitivity or is
> there an entirely better way to match two character arrays that have
> identical entries but written in different case?
>

You could use tolower() or toupper() to remove case differences.

	-thomas