Re: [R] NA vs.

2008-04-04 Thread Muenchen, Robert A (Bob)
riginal Message- > From: Peter Dalgaard [mailto:[EMAIL PROTECTED] > Sent: Friday, April 04, 2008 12:18 PM > To: Muenchen, Robert A (Bob) > Cc: [EMAIL PROTECTED] > Subject: Re: [R] NA vs. > > Muenchen, Robert A (Bob) wrote: > > Dear R-Helpers, > > > >

Re: [R] NA vs.

2008-04-04 Thread Peter Dalgaard
Muenchen, Robert A (Bob) wrote: > Dear R-Helpers, > > Why does R show character missing values in vectors as NA and when > stored in a data frame as ? I've searched but did not find an > explanation. > > Thanks, > Bob > > >> gender <- c("f","f","f",NA,"m","m","m","m") >> gender >> > [1] "f"

Re: [R] NA vs.

2008-04-04 Thread hadley wickham
On Fri, Apr 4, 2008 at 11:00 AM, Muenchen, Robert A (Bob) <[EMAIL PROTECTED]> wrote: > Dear R-Helpers, > > Why does R show character missing values in vectors as NA and when > stored in a data frame as ? I've searched but did not find an > explanation. It's because that character vector is auto

[R] NA vs.

2008-04-04 Thread Muenchen, Robert A (Bob)
Dear R-Helpers, Why does R show character missing values in vectors as NA and when stored in a data frame as ? I've searched but did not find an explanation. Thanks, Bob > gender <- c("f","f","f",NA,"m","m","m","m") > gender [1] "f" "f" "f" NA "m" "m" "m" "m" #here it lacks brackets. > > q1 <