From: Petr PIKAL <petr.pikal_at_precheza.cz>

Date: Mon, 19 May 2008 13:31:02 +0200

R-help_at_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. Received on Mon 19 May 2008 - 12:26:55 GMT

Date: Mon, 19 May 2008 13:31:02 +0200

Hi

r-help-bounces_at_r-project.org napsal dne 19.05.2008 13:06:33:

*> Hi,
**>
*

> I've a matrix that contains 4 replicates of each rowname. (4 a's, 4

*> b's, 4 c's in no particular order) Like this:
**>
**>
**> #
**> c 32
**> a 1
**> b 4
**> c 87
**> c 34
**> b 54
**> a 23
**> a 12
**> b 9
**> a 3
**> b 87
**> c 43
**>
**>
**> There are a couple of more columns but I'm using the above as an example
**>
**> I need to sort it so that the same rownames appear together in
**> alpahbetical order. Like this:
**>
**> #
**> a 1
**> a 23
**> a 12
**> a 3
**> b 4
**> b 54
**> b 9
**> b 87
**> c 87
**> c 34
**> c 43
**> c 32
**>
**>
**> The code I came up with is something like this:
**>
**> mat <- mat[sort(rownames(mat)), ]
*

Quite close

mat <- mat[order(rownames(mat)), ]

Regards

Petr

*>
*

> This doesn't work though, it returns the same value for each row each

*> time, something like this:
**>
**> #
**> a 1
**> a 1
**> a 1
**> a 1
**> b 4
**> b 4
**> b 4
**> b 4
**> c 32
**> c 32
**> c 32
**> c 32
**>
**> Any ideas how I could get my code to distinguish between the different
**> rows and get the output I'm looking for?
**>
**> Thanks,
**>
**> -Paul
**>
**> ______________________________________________
**> R-help_at_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.

R-help_at_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. Received on Mon 19 May 2008 - 12:26:55 GMT

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