[R] loop through files and create object

[Joshua Wiley]

Hi Daniel,

Try this:

for(i in 1:47) {
 assign(x = paste("data", i, sep = ""),
  value = read.csv(file.path("country", i, ".raw", fsep = ""), header = TRUE),
  envir = .GlobalEnv)
}


See ?assign for documentation.

Cheers,

Josh

On Tue, Jul 20, 2010 at 4:52 AM, Daniel Caro <dcarov at googlemail.com> wrote:
> Hi R users,
>
> I am a newbie and therefore the naive question. Sorry but I was unable
> to find an answer online. I would like to read 47 data sets
> (country1.raw, country2.raw, ... country47.raw) and save into a matrix
> each time (data1, data2, ....data47).
>
> for (i in 1:47){
> data(?) <- read.csv(file.path("country", i, ".raw", fsep = ""), header = TRUE)
> }
>
> The read.cvs statement seems to be right, but how to include "i" in
> "data" for it to create 47 matrices and not 1 (the last one).
>
> Thank you,
> Daniel
>
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>



-- 
Joshua Wiley
Ph.D. Student, Health Psychology
University of California, Los Angeles
http://www.joshuawiley.com/