[R] reading of a matrix
Schmitt, Corinna
Corinna.Schmitt at igb.fraunhofer.de
Thu Apr 5 13:42:19 CEST 2007
Thank you very much. It realizes the things I want.
Thanks a lot, Corinna
-----Ursprüngliche Nachricht-----
Von: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch] Im Auftrag von Vladimir Eremeev
Gesendet: Donnerstag, 5. April 2007 13:25
An: r-help at stat.math.ethz.ch
Betreff: Re: [R] reading of a matrix
Schmitt, Corinna wrote:
>
> I still have problems with the reading of a matrix.
>
> Input: matrixData6.txt
>
> A-Paar B-Paar C-Paar D-Paar E-Paar
> A 1 3 5 7 9
> B 2 4 6 8 10
>
>
> R-commands:
> y=read.table(file="Z:/Software/R-Programme/matrixData6.txt")
> y
>
> Result:
> A.Paar B.Paar C.Paar D.Paar E.Paar
> A 1 3 5 7 9
> B 2 4 6 8 10
>
> If you look into the txt-file you can recognize that the column names
> are not the same. Why?
>
Using "_" in variable names was illegal earlier (now this rule seems to be
relaxed).
read.table has converted names.
You could try to change them back (UNTESTED)
names(y) <- gsub(".", "_", names(y)),
Schmitt, Corinna wrote:
>
> If I add in the txt-file the line "MyData:" infront of all followed by a
> newline. The R-command as above response an error. How can I read the
> modified input and get the following result:
>
> MyData:
>
> A.Paar B.Paar C.Paar D.Paar E.Paar
> A 1 3 5 7 9
> B 2 4 6 8 10
>
You could name your variable MyData:
> MyData<-read.table( )
> MyData
Schmitt, Corinna wrote:
>
> Another stupid question might be hows can I change the column and row
> names after I made "read.table"? I want to have the following result,
> for example:
>
> MyData:
>
> G H I J K
> M 1 3 5 7 9
> N 2 4 6 8 10
>
> I studied all manuals I could find and the help but could not understand
> the examples or interpret it right for my case.
>
> Thanks for help,
> Corinna
>
names(MyData)<-c("G","H","I","J","K")
row.names(MyData)<-c("M","N")
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