Re: [R] charactor matrix convert to numeric matrix

From: jim holtman <jholtman_at_gmail.com>
Date: Wed, 02 Jun 2010 09:35:58 -0400

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
>
>
>
>
>
>
>        [[alternative HTML version deleted]]
>
>
> ______________________________________________
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>
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>

-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?

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Received on Wed 02 Jun 2010 - 13:41:53 GMT

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