[R] Loading data from folder

jim holtman jholtman at gmail.com
Mon Feb 1 03:23:22 CET 2010

Something like the following might work.  YOu can use 'choose.dir()'
to get the directory:

files <- list.files(path=yourDir)
result <- do.call(rbind, lapply(files, read.csv))

On Sun, Jan 31, 2010 at 9:10 PM, Mark Altaweel <maltaweel at anl.gov> wrote:
> Hi,
> I am trying to load csv type data from a folder. However, rather than
> syntax that simply loads one file at a time I was wondering if there
> is a method that loads all data from a specific folder.
> For instance, I have the following data files in a folder nebraskaStats:
> 10-1-2009_10-7-2009.txt
> 10-2-2009_10-8-2009.txt
> 10-3-2009_10-9-2009.txt
> ....etc. (245 total files in folder)
> Each file has the following format:
> Data1-5,Data 2-6,Data 3-7,...
> 1,2,3,...
> Although the comma separated format is consistent file to file, the
> name of the columns differ in many of the files.
> What I want to do is simply load all that data by pointing to the
> folder rather than specific file names.
> I know this syntax:   state.frame<-read.table("/nebraskaStats/",
> header=T, sep=",") does not seem to read data from a folder but rather
> it is intended to load specific files. I could write a loop that
> iterates the number of the files (e.g., N-S-2009_N-T-2009, whereby
> N,S, and T are iterated in the loop); however, this also seems
> cumbersome. Anyway, is there a simple method that just loads all the
> data in a folder rather than have to call out each specific file?
> Thanks in advance. This has been a great board and I appreciate all
> the past help.
> Mark
>        [[alternative HTML version deleted]]
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Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?

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