Reading a bunch of csv files into R

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-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Kevin Wright
Sent: Friday, May 25, 2012 2:55 PM
To: HJ YAN
Cc: r-help at 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

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]]

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--
Kevin Wright

______________________________________________
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.


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