[R] read.table with numeric row names
arun
smartpink111 at yahoo.com
Fri Jul 13 04:27:45 CEST 2012
Hello,
I saw your reply in nabble. Sorry about that. I thought the dataset had only few columns.
#You can read first line of a file using:
readLines("foo.txt",n=1)[1]
#The more generic colname substitution
dat1<-read.table(text="
2.5 3.6 7.1 7.9
100 3 4 2 3
200 3.1 4 3 3
300 2.2 3.3 2 4
",sep="",header=TRUE)
#The code should remove the "X" from the column names (row names?)
colnames(dat1)<-gsub("^[X](.*)","\\1",colnames(dat1))
dat1
2.5 3.6 7.1 7.9
100 3.0 4.0 2 3
200 3.1 4.0 3 3
300 2.2 3.3 2 4
plot(colMeans(dat1)~as.numeric(names(dat1)),xlab="Column_Name",ylab="Column_Mean")
A.K.
----- Original Message -----
From: kexinz <zhangchicool at gmail.com>
To: r-help at r-project.org
Cc:
Sent: Thursday, July 12, 2012 2:50 PM
Subject: [R] read.table with numeric row names
I have a text file like this
2.5 3.6 7.1 7.9
100 3 4 2 3
200 3.1 4 3 3
300 2.2 3.3 2 4
I used "r <- read.table("a.txt", header=T)"
The row names becomes X2.5, X3.6... What I need is the row names are
numeric, so I can use the row names as numbers on x-axis for plotting. e.g.
"plot(colMeans(r)~names(r))", something like this. How to do this?
Thanks.
--
View this message in context: http://r.789695.n4.nabble.com/read-table-with-numeric-row-names-tp4636342.html
Sent from the R help mailing list archive at Nabble.com.
______________________________________________
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.
More information about the R-help
mailing list