[R] Automatic file reading

[Sean Davis]

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 get all of 
the filenames specified by pattern from a directory specified by 
fullpath.

Sean

On Nov 24, 2004, at 7:31 AM, Arne Henningsen wrote:

> 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 (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,sep="")
>>   ? ? ? <- read.table(paste("/home/andersm/tmp/",name,sep=""))
>> }
>>
>> after which I want to have pair1,...,pair8 as tables.
>>
>> But I can not get it right. Anybody having a smart solution?
>>
>> Best regards,
>> Anders Malmberg
>>
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>
> -- 
> Arne Henningsen
> Department of Agricultural Economics
> University of Kiel
> Olshausenstr. 40
> D-24098 Kiel (Germany)
> Tel: +49-431-880 4445
> Fax: +49-431-880 1397
> ahenningsen at agric-econ.uni-kiel.de
> http://www.uni-kiel.de/agrarpol/ahenningsen/
>
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