2006/10/29, Wensui Liu <[EMAIL PROTECTED]>:
Andy,
First of all, thanks for your solution.
When I test your code, it doesn't work. I am not sure if I miss something.
Here is the code I tested:
flist<-list.files(path = file.path(, "c:\\"),pattern="[.]csv$")
First of all, I think the command sho
Andy,
First of all, thanks for your solution.
When I test your code, it doesn't work. I am not sure if I miss something.
Here is the code I tested:
flist<-list.files(path = file.path(, "c:\\"),pattern="[.]csv$")
csvlist<-lapply(flist, read.csv, header = TRUE)
Here is the error:
Error in file(fi
Works on all platforms:
flist <- list.files(path=file.path("somedir", "somewhere"),
pattern="[.]csv$")
csvlist <- lapply(flist, read.csv, header=TRUE)
whateverList <- lapply(csvlist, whatever)
Andy
From: Richard M. Heiberger
>
> Wensui Lui asks:
> > is there a similar way t
Wensui Lui asks:
> is there a similar way to read all txt or csv files with same
> structure from a folder?
On Windows I use this construct to find all files with the specified wild card
name.
I used the "\\" in the file paths with the translate=FALSE, because the "/" in
the DOS switches "/w/B"
is there a similar way to read all txt or csv files with same
structure from a folder?
thanks.
On 10/18/06, Jerome Asselin <[EMAIL PROTECTED]> wrote:
> On Wed, 2006-10-18 at 17:09 +0200, Lorenzo Isella wrote:
> > Dear All,
> > I am given a set of files names as:
> > velocity1.txt
> > velocity2.tx
cionforbai
> Sent: Wednesday, October 18, 2006 12:04 PM
> To: Lorenzo Isella
> Cc: r-help@stat.math.ethz.ch
> Subject: Re: [R] Automatic File Reading
>
> Just to complete: if you need them all at the same time:
>
> for(i in 1:100)
> {
> fn <- paste("velocity"
There have been many threads on this topic.
The posting guide would suggest you do something like this before posting
to the list:
> RSiteSearch("reading many files")
Which reveals many relevant threads, such as:
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/84176.html
htt
Just to complete: if you need them all at the same time:
for(i in 1:100)
{
fn <- paste("velocity",i,".txt",sep="")
varname <- paste("velocity",i,sep="")
assign(varname,read.csv(fn))
}
and you have a list of objects {velocity1, ..., velocity100} with
corresponding data.
Scionforbai
___
See ?read.table and the FAQs on importing data
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Lorenzo Isella
> Sent: Wednesday, October 18, 2006 11:09 AM
> To: r-help@stat.math.ethz.ch
> Subject: [R] Automatic File Reading
>
On Wed, 2006-10-18 at 17:09 +0200, Lorenzo Isella wrote:
> Dear All,
> I am given a set of files names as:
> velocity1.txt
> velocity2.txt
> and so on.
> I am sure there must be a way to read them automatically in R.
> It is really taking me longer to read them than to analyze them.
> Anybody has
Dear All,
I am given a set of files names as:
velocity1.txt
velocity2.txt
and so on.
I am sure there must be a way to read them automatically in R.
It is really taking me longer to read them than to analyze them.
Anybody has a suggestion to help me out with this?
Many thanks
Lorenzo
Sean Davis wrote:
If you simply want read all files in a given directory, you can do
something like:
fullpath = "/home/andersm/tmp"
filenames <- dir(fullpath,pattern="*")
pair <- sapply(filenames,function(x)
{read.table(paste(fullpath,'/',x,sep=""))})
Slightly off-topic but it is more portable t
If you simply want read all files in a given directory, you can do
something like:
fullpath = "/home/andersm/tmp"
filenames <- dir(fullpath,pattern="*")
pair <- sapply(filenames,function(x)
{read.table(paste(fullpath,'/',x,sep=""))})
Sorry, untested. But the point is that you can use dir to ge
Hi Andreas,
what's about:
pair <- list()
for (i in 1:8){
name <- paste("pair",i,sep="")
pair[[ i ]] <- read.table(paste("/home/andersm/tmp/",name,sep=""))
}
Arne
On Wednesday 24 November 2004 12:10, Anders Malmberg wrote:
> Hi,
>
> I want to do automatic reading of a number of tables (file
Anders Malmberg wrote:
Hi,
I want to do automatic reading of a number of tables (files) stored in
ascii format
without having to specify the variable name in R each time. Below is an
example
of how I would like to use it (I assume files pair1,...,pair8 exist in
spec. dire.)
for (i in 1:8){
na
for(i in 1:10){ assign( paste("data", i), i ) }
> data1
[1] 1
> data5
[1] 5
> data8 + data5
[1] 13
See help("assign") for more details and examples.
On Wed, 2004-11-24 at 11:10, Anders Malmberg wrote:
> Hi,
>
> I want to do automatic reading of a number of tables (files) stored in
> ascii form
Hi,
I want to do automatic reading of a number of tables (files) stored in
ascii format
without having to specify the variable name in R each time. Below is an
example
of how I would like to use it (I assume files pair1,...,pair8 exist in
spec. dire.)
for (i in 1:8){
name <- paste("pair",i,se
17 matches
Mail list logo
