[R] character vector -> numeric matrix ??

[Steve Lianoglou]

Hi,

On Jul 28, 2009, at 1:13 PM, kathie wrote:

>
> Dear R users...
>
> I'd like to change this character vector, "zz",
>
> zz <- c("12","56","89")
>
> to the following numeric matrix.
>
>     [,1] [,2]
> [1,]    1    2
> [2,]    5    6
> [3,]    8    9
>
>
> Actually, "zz" vector has a long length.
>
> Any comments will be greatly appreciated.
>
> Kathryn Lord

pieces <- strsplit(zz, "") # look at what pieces looks like
my.data <- as.numeric(unlist(pieces))
my.matrix <- t(matrix(my.data, nrow=2))

my.matrix
      [,1] [,2]
[1,]    1    2
[2,]    5    6
[3,]    8    9

-steve

--
Steve Lianoglou
Graduate Student: Computational Systems Biology
   |  Memorial Sloan-Kettering Cancer Center
   |  Weill Medical College of Cornell University
Contact Info: http://cbio.mskcc.org/~lianos/contact