Message-ID: <4AC44DF2.7040606@ucalgary.ca>
Date: 2009-10-01T06:36:34Z
From: Peter Ehlers
Subject: Minimum and blanks
In-Reply-To: <25692189.post@talk.nabble.com>
Chris,
What is your definition of the minimum of a *character* vector?
-Peter Ehlers
Chris Li wrote:
> Hi all,
>
> I want to calculate the minimum of a column which contains blanks.
>
> R returns "" as the minimum, which is not I want.
>
> Is there a way to overcome it?
>
> Thanks in advance.
> Chris