On Wed, Sep 12, 2012 at 12:40:54PM -0500, Julio Sergio Santana wrote: > Hi, > I'm trying to use pipes in R. By now, I could launch the linux command "wc" > (to count words from a text), but > I don't know how to capture the results, say in a vector of chars... > Here is the R code I'm trying: > > :> f <- pipe("wc", open="w") > :> writeLines(c("uno dos tres", "cuatro cinco", "seis"), f) > :> close(f) > : 3 6 31 > > The result is just displayed but I couldn't put the result into a R > variable. > Do you have any comments on this?
Hi. Try the following. writeLines(c("uno dos tres", "cuatro cinco", "seis"), "some_file.txt") out <- system("wc some_file.txt", intern=TRUE) out [1] " 3 6 31 some_file.txt" Here, out is a character variable. Hope this helps. Petr Savicky. ______________________________________________ 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.