[R] Help on merging without a common variable

[R. Michael Weylandt]

On Thu, Aug 2, 2012 at 4:52 PM, Ayyappa Chaturvedula
<ayyappach at gmail.com> wrote:
> Michael,
> Thank  you for this , it worked.  I was thinking "by" is a required argument
> in merge function.
>

Well, it is "required" in a strict sense, but it has a default value
(defaulting to the shared names) so _you_ don't have to specify it.

Best,
Michael

> Regards,
> Ayyappa
>