For example: myDir <- "some file path" filenames <- list.files(myDir) filenames <- filenames[grep("[.]csv", filenames)]
data_names <- gsub("[.]csv", "", filenames) for(i in 1:length(filenames)) assign(data_names[i], read.csv(file.path(myDir, filenames[i]))) Benjamin Nutter | Biostatistician | Quantitative Health Sciences Cleveland Clinic | 9500 Euclid Ave. | Cleveland, OH 44195 | (216) 445-1365 -----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Kevin Wright Sent: Friday, May 25, 2012 2:55 PM To: HJ YAN Cc: r-help@r-project.org Subject: Re: [R] Reading a bunch of csv files into R See ?dir Assign the value to a vector and loop over the elements of the vector. Kevin On Fri, May 25, 2012 at 12:16 PM, HJ YAN <yhj...@googlemail.com> wrote: > Dear R users > > > I am struggling from a data importing issue: > > I have some hundreds of csv files needed to be read into R for futher > analysis. All those csv files are named in one of the three formats: > > (1) strings: e.g. London_Oxford street > (2) Integer: e.g. 1234_5678 > (3) combined: e.g. London_1234 > > I intend to use read.csv("xxxx_xxx.csv") but I only dealt with sigle > documents before and if there are only no more than 20 files, I do not > bother to search a more efficient way. > > > Is there any claver way that I do not have to type in all these > hundreds names by hand, maybe using a R package or write some code in > some other languages if it is not too difficult to learn. > > Any thoughts/hints please?? > > Many thanks in advance! > > HJ > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@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. -- Kevin Wright ______________________________________________ R-help@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. =================================== Please consider the environment before printing this e-mail Cleveland Clinic is ranked one of the top hospitals in America by U.S.News & World Report (2010). Visit us online at http://www.clevelandclinic.org for a complete listing of our services, staff and locations. Confidentiality Note: This message is intended for use\...{{dropped:13}} ______________________________________________ R-help@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.