[R] Odp: logical to numeric matrix changing dimensions

[Petr PIKAL]

Hi

r-help-bounces at r-project.org napsal dne 14.07.2010 07:54:51:

> example:
> > y=(rbind(c(TRUE,TRUE,TRUE),c(FALSE,FALSE,FALSE)))
> > y
>       [,1]  [,2]  [,3]
> [1,]  TRUE  TRUE  TRUE
> [2,] FALSE FALSE FALSE
> > as.numeric(y)
> [1] 1 0 1 0 1 0
> 
> I am trying to make some important matrixes become nuemric (1 or 0) but 
they
> change their dimensions.. anyone know how to easily fix it??

Matrix is only vector with dimensions, and function as.numeric creates a 
vector changed to numeric so it strips dimensions.For your purpose I would 
use

y+0 or y*1

or maybe you can use logical matrix directly in your computations.

Regards
Petr

> 
> 
> Tks in advance.
> 
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