I typically wouldn't use strsplit but would reread it using read.table and textConnection as in:
http://www.mail-archive.com/r-help@stat.math.ethz.ch/msg84752.html On 5/2/07, Roland Rau <[EMAIL PROTECTED]> wrote: > Dear all, > > I just realized that I forgotten to write some kind of final email for > this thread and to thank you for your help. > It seems that the recommeneded procedure in such circumstances has three > steps: > 1) readLines() > 2) select the desired lines > 3) strsplit() > > Thanks Ferdinand, Jim, and Paul! > Roland > > Roland Rau wrote: > > Dear all, > > > > I have an ASCII file where records are separated by a blank. I would > > like to read those data; however, only the data in rows 1, 3, 5, 7, ... > > are important; the other lines (2,4,6,8,....) contain no useful > > information for me. > > So far I used awk/gawk to do it: > > gawk '{if ((FNR % 2) != 0) {print $0}}' infile.txt > outfile.txt > > > > What is the recommended way to accomplish this in R? > > Simply reading the whole file, and deleting all the even-numbered lines > > is not straightforward since these lines have different length (whereas > > lines 1,3,5,7,... have the same length). > > > > I 'RSiteSearched' for "read every second line from a file" but this > > search did not yield the desired result. > > Also trying out the arguments nrows and skip from read.table() did not > > help. > > > > Maybe someone knows an easy way to do it from within R? -- of course not > > using system("gawk ....") :-) > > If not, it does not matter too much since I get the job done easily with > > awk. > > > > Thanks, > > Roland > > > > > > > > > > ______________________________________________ > 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.