[R] charactor matrix convert to numeric matrix

[jim holtman]

try this:

> a<-cbind(c("23","54","65"),c("1","2","3"))
> a
     [,1] [,2]
[1,] "23" "1"
[2,] "54" "2"
[3,] "65" "3"
> mode(a) <- 'numeric'
> a
     [,1] [,2]
[1,]   23    1
[2,]   54    2
[3,]   65    3
>


On Wed, Jun 2, 2010 at 8:15 AM, Yuan Jian <jayuan2008 at yahoo.com> wrote:
> Hello R experts,
> can you tell me a simple way to convert a charactor matrix to numeric matrix?
> if I use as.numeric, the matrix is converted to a vector.
>
> a<-cbind(c("23","54","65"),c("1","2","3"))
> a
>      [,1] [,2]
> [1,] "23" "1"
> [2,] "54" "2"
> [3,] "65" "3"
>
>  as.numeric(a)
> [1] 23 54 65  1  2  3
>
> thanks
> Jian
>
>
>
>
>
>
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>
>
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-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

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