-----Original Message-----
From: r-devel-bounces at r-project.org [mailto:r-devel-bounces at r-project.org]
On Behalf Of Kasper Daniel Hansen
Sent: November-04-11 5:26 AM
To: peter dalgaard
Cc: r-devel at r-project.org
Subject: Re: [Rd] Error in documentation of "merge"
On Fri, Nov 4, 2011 at 8:20 AM, peter dalgaard <pdalgd at gmail.com> wrote:
On Nov 4, 2011, at 13:11 , Rainer M Krug wrote:
Hi
there seems to be an error in the documentation of the "merge" function:
Arguments:
? ?x, y: data frames, or objects to be coerced to one.
?by, by.x, by.y: specifications of the common columns. ?See ?Details?.
? ? all: logical; ?all = L? is shorthand for ?all.x = L? and ?all.y =
? ? ? ? ?L?.
The "L" should be a T or a TRUE.
I think it's on purpose: L indicates a logical value, TRUE _or_ FALSE.
I agree with Peter here. But it did make me pause the first time I
read it on the help page years ago and furthermore, I think this is at
least the second time where this particular formulation has been
questioned on R-devel. I am not an index of R help pages, but I
cannot recall seeing the 'L' as shorthand for logical. I suggest
changing the formulation since it seems that several people have been
confused, for example by writing out 'logical' instead of 'L'.