You need to convert to a matrix and remove names:
> x <- read.table(textConnection("M1 M2 M3 M4 M5 M6 M7 M8 M9 M10
+ 1 9 11 14 15 18 20 20 20 20 20
+ 2 3 4 8 9 11 12 14 15 15 15
+ 3 4 5 8 8 9 9 9 9 9 9
+ 4 4 5 7 8 8 8 8 8 8 9"), header=TRUE)
> closeAllConnections()
> y <- as.matrix(x)
> x
M1 M2 M3 M4 M5 M6 M7 M8 M9 M10
1 9 11 14 15 18 20 20 20 20 20
2 3 4 8 9 11 12 14 15 15 15
3 4 5 8 8 9 9 9 9 9 9
4 4 5 7 8 8 8 8 8 8 9
> y
M1 M2 M3 M4 M5 M6 M7 M8 M9 M10
1 9 11 14 15 18 20 20 20 20 20
2 3 4 8 9 11 12 14 15 15 15
3 4 5 8 8 9 9 9 9 9 9
4 4 5 7 8 8 8 8 8 8 9
> dimnames(y) <- NULL
> y
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
[1,] 9 11 14 15 18 20 20 20 20 20
[2,] 3 4 8 9 11 12 14 15 15 15
[3,] 4 5 8 8 9 9 9 9 9 9
[4,] 4 5 7 8 8 8 8 8 8 9
>
On Wed, Apr 22, 2009 at 10:00 AM, tsunhin wong <thjw...@gmail.com> wrote:
> Hello all,
>
> Probably my concepts about the data.frame and matrix and array in R
> are not clear, I need some clarification to help me understand them
> better.
>
>>M <- read.table("test1.csv",sep=",",row.names=NULL,header=T)
>
> gives me: M as
>
> M1 M2 M3 M4 M5 M6 M7 M8 M9 M10
> 1 9 11 14 15 18 20 20 20 20 20
> 2 3 4 8 9 11 12 14 15 15 15
> 3 4 5 8 8 9 9 9 9 9 9
> 4 4 5 7 8 8 8 8 8 8 9
>
> 1. How can I read the csv file to:
>
> M1 M2 M3 M4 M5 M6 M7 M8 M9 M10
> [1,] 9 11 14 15 18 20 20 20 20 20
> [2,] 3 4 8 9 11 12 14 15 15 15
> [3,] 4 5 8 8 9 9 9 9 9 9
> [4,] 4 5 7 8 8 8 8 8 8 9
>
> 2. or how can convert the above M to a format with [1,],[2,] etc
> instead of 1,2,etc?
>
> 3. How can I read a text file so that I can get:
> [,1] [,2] [,3] [,4] [,5]
> [1,] 9 11 14 15 18
> [2,] 3 4 8 9 11
> [3,] 4 5 8 8 9
> [4,] 4 5 7 8 8
>
> (instead of having the columns names V1 to V5?)
>
> Thank you for your help!
>
> Regards,
>
> John
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
--
Jim Holtman
Cincinnati, OH
+1 513 646 9390
What is the problem that you are trying to solve?
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