[R] check availability of a file in R

[Samuel Le]

Does file.exists answer to your question?
file.exists(".RData")

If you are not sure of the exact name of the file but know it contains ".RData", you can try:
List.files(directory,".RData")


-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Farhad Shokoohi
Sent: 07 September 2011 01:07
To: R-help at r-project.org
Subject: [R] check availability of a file in R

I need to use a loop and each time go to folder i and check availability of .RData file. If it exist load it and if not submit a command in linux. Something like this

for (i in 1:10){
        setwd(~/i/)
        if .Rdata (?????)
        load (.RData
        else
        <run a command in linux like " cd ~/i/  ;  qsub job$i.pbs" >
}

Any idea how to do that in R?

Farhad

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