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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