Dear all,
I have many csv files whose contents I want to change a bit en masse. So far,
I've written code that can change them in a for loop, like so:
# Subset of files in the folder I want to change
subset = "somestring"
# Retrieve list of files to change
filelist=list.files()
filelist = filelist[grep(subset, filelist)]
for(i in 1:length(filelist)){
setwd(readdir)
temp = read.csv(filelist[i],as.is = T, strip.white = T)
>whatever I want to do to temp
setwd(writedir)
write.table(temp, file = filelist[i], sep = ",", col.names=NA)
}
It's a little slow though, so I would like to get rid of the for loop but
preserve its function. Would it be possible to use sapply() or something
similar? Any insight would be appreciated!
Best regards,
Emily
______________________________________________
R-help@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.
