R help - Jan 2013 - columns called X rename Y

I have a data. frame to which you want to change the names to some of their
columns.

For example:
> seba <- data.frame ('constant' = 3, 'numbers' = 1: 10,
'letters' = LETTERS
[1:10], otros = 2:11)

List their names:
> names (Seba)
[1] "constant" "numbers" "letters"

I want to rename c the column called constant and b the column
called numbers.

I do not know in which order appear names.

How could do it?

Thanks in advance,

Sebastian.

	[[alternative HTML version deleted]]

Hello,

Try the following.


names(seba)[grep("numbers", names(seba))] <- "b"
names(seba)[grep("constant", names(seba))] <- "c"

names(seba)


Hope this helps,

Rui Barradas

Em 18-01-2013 18:14, Sebastian Kruk escreveu:
> I have a data. frame to which you want to change the names to some of their
> columns.
>
> For example:
>
>> seba <- data.frame ('constant' = 3, 'numbers' = 1:
10, 'letters' = LETTERS
> [1:10], otros = 2:11)
>
> List their names:
>
>> names (Seba)
> [1] "constant" "numbers" "letters"
>
> I want to rename c the column called constant and b the column
> called numbers.
>
> I do not know in which order appear names.
>
> How could do it?
>
> Thanks in advance,
>
> Sebastian.
>
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
> 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.
>

Simply
> colnames(seba)[1] <- "c"
> colnames(seba)[2] <- "b"
Regards,

Jose

________________________________________
From: r-help-bounces at r-project.org [r-help-bounces at r-project.org] On
Behalf Of Sebastian Kruk [residuo.solow at gmail.com]
Sent: 18 January 2013 18:14
To: R-help
Subject: [R] columns called X rename Y

I have a data. frame to which you want to change the names to some of their
columns.

For example:
> seba <- data.frame ('constant' = 3, 'numbers' = 1: 10,
'letters' = LETTERS
[1:10], otros = 2:11)

List their names:
> names (Seba)
[1] "constant" "numbers" "letters"

I want to rename c the column called constant and b the column
called numbers.

I do not know in which order appear names.

How could do it?

Thanks in advance,

Sebastian.

        [[alternative HTML version deleted]]

______________________________________________
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.

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