[R] Odp: fast way to compare two matrices

From: Petr PIKAL <petr.pikal_at_precheza.cz>
Date: Wed, 27 Apr 2011 13:18:00 +0200

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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http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.



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