write.csv file= question

I cannot reproduce your problem on a Windows 8 machine with R version 3.2.1. It is working fine for me without "file=" when I source() a script file from the console. 

Open a script file and add the following commands:

test <- data.frame(x=rnorm(15, 10, 2), y=rnorm(15, 15, 3))
write.csv(test, "test.csv")
file.info("Test.csv")

Save it as test.R and then source it:

source("Test.R", echo=TRUE)

test <- data.frame(x=rnorm(15, 10, 2), y=rnorm(15, 15, 3))

write.csv(test, "test.csv")

file.info("Test.csv")

size isdir mode               mtime               ctime
Test.csv  600 FALSE  666 2015-08-04 10:13:23 2015-08-04 10:11:56
                       atime exe
Test.csv 2015-08-04 10:11:56  no


-------------------------------------
David L Carlson
Department of Anthropology
Texas A&M University
College Station, TX 77840-4352



-----Original Message-----
From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Brittany Demmitt
Sent: Tuesday, August 4, 2015 9:51 AM
To: r-help at r-project.org
Subject: [R] write.csv file= question

Hello,

I have a quick question about the ?file=? specification for the command write.csv.    When I run this command in Rstudio I do not need the ?file=? specified.  For example the below command works just fine.

write.csv(data,?/home/data.csv?)   

However when I am running an Rscript from the terminal and putting it in the background I need to specify ?file=?.  So for the example above I need to instead have

write.csv(data,file=?/home/data.csv?)   

Any ideas why this is the case?  Writing file= isn?t a problem, just trying to get an idea of how R works better.

Thanks!

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