[R] Import multiple files into R

[PIKAL Petr]

Hi

Best way is to put those files in one directory and start R from this directory or set this directory as working one.

?set.wd
Then you can use list.files() to get file names.
?list.files

myfiles<-list.files()

Than strip txt. E.g. by

filenames<-strsplit(list.files(), "\\."))

After that you can use for cycle to read all files, however I would prefer list structure.

files<-vector(mode="list", length(myfiles))

for (i in 1:length(myfiles)) {
files[[i]]<-read.table(myfiles[i])
names(files)[[i]]<-filenames[[i]][1]
}

Instead of 75 objects you will get one list object and you can easily use interactively or programmatically its parts.

Regards
Petr


> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of ajaykumar
> Sent: Thursday, March 20, 2014 6:15 AM
> To: r-help at r-project.org
> Subject: [R] Import multiple files into R
>
> Hi I want to import around 75 files. Each file has a name and a time
> and is comma separated.
> For example some of my file names are
> Asheville_Dec.txt
> Asheville_Jan.txt
> Asheville_Feb.txt
> Charlotte_Dec.txt
> Chapelhill_Jan.txt
>
> The time months are only Dec Jan and Feb. The locations are different.
> I have data for these 3 months at 25 cities which I want to import in R
> I don't want to use read.table 75 times and keep changing names.
>
> Is there any way I can keep all the city names in an object and the
> three months in another object and then use a loop over read.table of
> location_time.txt I would also like to view them as 75 different data
> sets in R So the file Asheville_Dec must be in a dataset called
> Asheville_Dec in R
>
> Can this be done.
> Please help
>
>
>
> --
> View this message in context: http://r.789695.n4.nabble.com/Import-
> multiple-files-into-R-tp4687178.html
> Sent from the R help mailing list archive at Nabble.com.
>
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