R help - Jul 2003 - how to rename rows/columns of a matrix?

Hi

I get a matrix with the columns named like "X13 X22 X1 X14 ...", i.e.
not
successively. That has it's good reasons, but now how can I rename the 
columns to "X1 X2 X3 ..."?

Thanks a lot,
David

If A is your matrix try:

cnames(A) = paste("X", 1:ncol(A), sep="")


-----Original Message-----
From: David Andel [mailto:andel at ifi.unizh.ch] 
Sent: 08 July 2003 17:23
To: R-Project
Subject: [R] how to rename rows/columns of a matrix?


Hi

I get a matrix with the columns named like "X13 X22 X1 X14 ...", i.e.
not 
successively. That has it's good reasons, but now how can I rename the 
columns to "X1 X2 X3 ..."?

Thanks a lot,
David

______________________________________________
R-help at stat.math.ethz.ch mailing list
https://www.stat.math.ethz.ch/mailman/listinfo/r-help

Sorry, that should have been "colnames" rather than cnames; i.e.:

colnames(A) = paste("X", 1:ncol(A), sep="")


-----Original Message-----
From: David Andel [mailto:andel at ifi.unizh.ch] 
Sent: 08 July 2003 17:23
To: R-Project
Subject: [R] how to rename rows/columns of a matrix?


Hi

I get a matrix with the columns named like "X13 X22 X1 X14 ...", i.e.
not 
successively. That has it's good reasons, but now how can I rename the 
columns to "X1 X2 X3 ..."?

Thanks a lot,
David

______________________________________________
R-help at stat.math.ethz.ch mailing list
https://www.stat.math.ethz.ch/mailman/listinfo/r-help

For a matrix m with k columns:

colnames(m) <- paste("X", 1:k, sep="")

David

-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch]On Behalf Of David Andel
Sent: 08 July 2003 17:23
To: R-Project
Subject: [R] how to rename rows/columns of a matrix?


Hi

I get a matrix with the columns named like "X13 X22 X1 X14 ...", i.e.
not
successively. That has it's good reasons, but now how can I rename the 
columns to "X1 X2 X3 ..."?

Thanks a lot,
David

______________________________________________
R-help at stat.math.ethz.ch mailing list
https://www.stat.math.ethz.ch/mailman/listinfo/r-help

This is what I would do:

cc <- NULL
for(i in 1:ncol(x)) cc <- c(cc, paste("X", i, sep=''))
colnames(x) <- cc

where x is your matrix.

Hope this helps,

Andy

__________________________________
Andy Jaworski
Engineering Systems Technology Center
3M Center, 518-1-01
St. Paul, MN 55144-1000
-----
E-mail: apjaworski at mmm.com
Tel:  (651) 733-6092
Fax:  (651) 736-3122


|---------+-------------------------------->
|         |           "David Andel"        |
|         |           <andel at ifi.unizh.ch> |
|         |           Sent by:             |
|         |           r-help-bounces at stat.m|
|         |           ath.ethz.ch          |
|         |                                |
|         |                                |
|         |           07/08/2003 11:22     |
|         |                                |
|---------+-------------------------------->
 
>-----------------------------------------------------------------------------------------------------------------------------|
  |                                                                             
|
  |      To:       "R-Project" <r-help at stat.math.ethz.ch>    
|
  |      cc:                                                                    
|
  |      Subject:  [R] how to rename rows/columns of a matrix?                  
|
 
>-----------------------------------------------------------------------------------------------------------------------------|




Hi

I get a matrix with the columns named like "X13 X22 X1 X14 ...", i.e.
not
successively. That has it's good reasons, but now how can I rename the
columns to "X1 X2 X3 ..."?

Thanks a lot,
David

______________________________________________
R-help at stat.math.ethz.ch mailing list
https://www.stat.math.ethz.ch/mailman/listinfo/r-help