Dear R users,
Does somebody know the way to import many files by a single command in R ? I
have 50 files in a directory and now, i am importing the files repeatedly (one
by one). If there is a way to import all files at a time, it makes much more
easy and save times too.
Thanks in advance.
Sincerely,
Ram Kumar Basent
Wageningen University,
the Netherlands
[[alternative HTML version deleted]]
See the example in ?source, which does exactly this... or make a package depending on your needs.> -----Original Message----- > From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] > On Behalf Of ram basnet > Sent: Wednesday, November 25, 2009 8:35 AM > To: R help > Subject: [R] Importing many files from a single code > > Dear R users, > > Does somebody know the way to import many files by a single command in R ? > I have 50 files in a directory and now, i am importing the files > repeatedly (one by one). If there is a way to import all files at a time, > it makes much more easy and save times too. > Thanks in advance. > > > Sincerely, > Ram Kumar Basent > Wageningen University, > the Netherlands > > > > > [[alternative HTML version deleted]]
Exactly what do you mean by "import"? What commands are you using? You can get a list of the files in a directory and then iterate through reading each one in. If you use 'lapply', you can 'read.table' in some data frames and then 'rbind' them into a single data frame. You need to be more specific on the problem you are trying to solve. On Wed, Nov 25, 2009 at 9:35 AM, ram basnet <basnetabc at yahoo.com> wrote:> Dear R users, > > Does somebody know the way to import many files by a single command in R ? I have 50 files in a directory and now, i am importing the files repeatedly (one by one). If there is a way to import all files at a time, it makes much more easy and save times too. > Thanks in advance. > > > Sincerely, > Ram Kumar Basent > Wageningen University, > the Netherlands > > > > > ? ? ? ?[[alternative HTML version deleted]] > > > ______________________________________________ > 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. > >-- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve?
On Nov 25, 2009, at 9:35 AM, ram basnet wrote:> Dear R users, > > Does somebody know the way to import many files by a single command > in R ? I have 50 files in a directory and now, i am importing the > files repeatedly (one by one). If there is a way to import all files > at a time, it makes much more easy and save times too. > Thanks in advance.Learn to search: > RSiteSearch("import many files") A search query has been submitted to http://search.r-project.org The results page should open in your browser shortly One link away you find: https://stat.ethz.ch/pipermail/r-help/attachments/20080903/4172cd28/attachment.pl -- David Winsemius, MD Heritage Laboratories West Hartford, CT
Dear Ram Kumar Basent:
I suggest you restore you file is list. I give my example that I read 50
image by 50 folder.
imgA<-list() <-create an empty list
for(i in 1:50) <-how many file you need to looping.
{
imgA[[i]]<-read.jpeg(paste("c:/DataCentre/DataPisA/A",i,"FP3.jpg",sep="")))
}
This is my example how I read 50 image in 50 folders. Hope this will hepl
you.
Best Wishes
Chuan
--
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