[R] reading of a matrix

[Schmitt, Corinna]

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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