On Jul 12, 2010, at 2:32 AM, Joshua Wiley wrote:
Hi,
Assuming that you have read the files into R,
and that their names (in R) are held in some object
(e.g., 'file2'), then this works
do.call(what = cbind, args = mget(x = file2, envir = .GlobalEnv)
Here is a reproducible example:
x1 <- data.frame(x = 1:10)
x2 <- data.frame(y = 1:10)
file.names <- c("x1", "x2")
do.call(cbind, mget(file.names, envir=.GlobalEnv))
If you want to automatically retrieve an unknown or large number of
files from the current environment you can use grep with ls
> ls()[grep("^v", ls()) ]
[1] "v1" "v2" "v3" "v4" "varname"
I don't have any objects named <...>out3 but you might try the above
form with your pattern.
--
DAvid.
Best regards,
Josh
On Sun, Jul 11, 2010 at 9:08 PM, jd6688 <jdsignat...@gmail.com> wrote:
I have 30 files in the current directories, i would like to perform
the
cbind(fil1,file2,file3,file4....file30)
how could i do this in a for loop:
such as:
file2 <- list.files(pattern=".out3$")
for (j in file2) {
cbind(j).......how to implement cbind here
}
Thanks.
--
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--
Joshua Wiley
Ph.D. Student, Health Psychology
University of California, Los Angeles
http://www.joshuawiley.com/
______________________________________________
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
West Hartford, CT
______________________________________________
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
