Try something along these lines assuming that the current directory is \Program Files\R\R-2.3.1pat. Note use of paste to create the command line to pass to pipe:
# search for indicated string in each of the files and # for each match output the file name Files <- c("CHANGES", "COPYING", "NEWS", "NEWS") for(f in Files) print(readLines(pipe(paste("findstr /m out-of-range", f)))) On 8/2/06, Marco Grazzi <[EMAIL PROTECTED]> wrote: > Hi all, > > I have the following problem. > Inside R, I am trying to run a loop on several files. > The data are stored in these files in a peculiar way, thus, at the same time > I load the data, I would like to invoke a utility. I do this with "pipe". > (The utility I am using is gbget from the package gbutils. It works correctly > from shell, and it is not the problem.) > The problem is that from within pipe I do not know how to have the loop > running. I guess I should manage to unquote the quotation mark inside the > pipe for the loop to run, but I do not how to do it. > In the following examples, for instance, I would like pipe to interpret the > "i" as the file.names of the loop specified above. > > # specify the files on which I want to have the loop running > file.names <- system("ls ???.gz", intern=TRUE) > # Start loop > for(i in file.names){ > dati <- read.table(pipe("gbget 'i[160](1)' '[37](1)' '[145](1)' > |gbget '()D' ")) > # [...] some statistical analysis follows [...] > } > > Thanks for your help (hoping I manged to be enough clear), > marco > > > -- > > > Marco Grazzi > > ----- > > PhD Candidate in Economics and Management > LEM-Sant'Anna School of Advanced Studies > Piazza Martiri della Liberta', 33 > 56127 Pisa, Italy > Tel. +39-050-883365 Fax +39-050-883344 > Web site: https://mail.sssup.it/~grazzi > > ______________________________________________ > R-help@stat.math.ethz.ch 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. > ______________________________________________ R-help@stat.math.ethz.ch 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.