row.names is a function that takes a data.frame as an argument. So how
about
> row.names(data)
?
As an aside, 'data' is not the best choice for a variable name in R,
since there is a function called 'data' that will get overridden if you
do this ...
Patrick Richardson wrote:
List,
I'm trying to extract the row names of a table I have read into R.
data <- read.table("mesodata.txt", header=TRUE, row.names=1)
When I try to extract them using,
names <- data$row.names
I get,
names
NULL
I've tried changing to a matrix, data frame, etc. and still get "NULL".
I've checked ?row.names as well as help on extracting part of an object,
etc. and unless I'm missing something obvious (likely), I can't figure out
how to extract them.
BACKGROUND
I want to extract the row names (which are basically gene id's) as well as
some other columns (which I can do successfully) and "cbind" them into
another data frame (which I can also do successfully). I just can't get the
row names extracted (Assigned) to an seperate object.
Any suggestions would be appreciated.
Many Thanks,
Patrick
sessionInfo()
R version 2.7.0 (2008-04-22)
i386-pc-mingw32
locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
States.1252;LC_MONETARY=English_United
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
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