columns called X rename Y
If you have a lot of names to change, or you need to do it regularly, you can use something like:
renames <- read.table(text=
"oldname newname
constant c
numbers b
", header=TRUE, as.is=TRUE )
names(seba)[match(renames$oldname, names(seba))] <- renames$newnames
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Rui Barradas <ruipbarradas at sapo.pt> wrote:
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]]
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