I think we can declare this the global minimum in terms of size. Thanks to
all for their contributions. On a personal note, what escaped me was the
existence of MARGIN in set-related operations.
-g
On Thu, Aug 7, 2008 at 11:51 AM, Charles C. Berry <[EMAIL PROTECTED]>wrote:
> On Thu, 7 Aug 2008,
On Thu, 7 Aug 2008, Dan Davison wrote:
On Wed, Aug 06, 2008 at 06:32:43PM -0400, Giuseppe Paleologo wrote:
I was posed the following problem/teaser:
given two matrices, come up with an "elegant" (=fast & short) function that
returns a matrix with all and only the non-duplicated columns of both
On Wed, Aug 06, 2008 at 06:32:43PM -0400, Giuseppe Paleologo wrote:
> I was posed the following problem/teaser:
>
> given two matrices, come up with an "elegant" (=fast & short) function that
> returns a matrix with all and only the non-duplicated columns of both
> matrices; the column order does
: [R] Union of columns of two matrices
I was posed the following problem/teaser:
given two matrices, come up with an "elegant" (=fast & short) function
that
returns a matrix with all and only the non-duplicated columns of both
matrices; the column order does not matter. In ess
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Giuseppe Paleologo
Sent: Wednesday, August 06, 2008 6:33 PM
To: r-help@r-project.org
Subject: [R] Union of columns of two matrices
I was posed the following problem/teaser:
given two matrices, come up with an
I was posed the following problem/teaser:
given two matrices, come up with an "elegant" (=fast & short) function that
returns a matrix with all and only the non-duplicated columns of both
matrices; the column order does not matter. In essence, a matrix equivalent
of union(x,y), where x and y are v
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