[R] Odp: fast way to compare two matrices

Alaios alaios at yahoo.com
Wed Apr 27 13:29:49 CEST 2011


That was great :)
REgards


--- On Wed, 4/27/11, Petr PIKAL <petr.pikal at precheza.cz> wrote:

> From: Petr PIKAL <petr.pikal at precheza.cz>
> Subject: Odp: [R] fast way to compare two matrices
> To: "Alaios" <alaios at yahoo.com>
> Cc: R-help at r-project.org, r-help-bounces at r-project.org
> Date: Wednesday, April 27, 2011, 12:18 PM
> Hi
> 
> x <- matrix(rnorm(1e6), 1000,1000)
> y <- matrix(rnorm(1e6), 1000,1000)
> 
> identical(x,y)
> [1] FALSE
> 
> The response is almost instant.
> 
> In case you are not satisfied with the unspecific answer be
> more specific 
> with your question.
> 
> Regards
> Petr
> 
> r-help-bounces at r-project.org
> napsal dne 27.04.2011 13:04:37:
> 
> > Dear all,
> > I am trying to speed up some code and I would like to
> check fast that it 
> works
> > by comparing two different matrices.
> > 
> > What is the fastest way to do that in R?
> > 
> > Best Regards
> > Alex
> > 
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>



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