On Aug 15, 2010, at 10:58 AM, Data Analytics Corp. wrote:
Hi,
I have an upcoming project that will involve a large text file. I
want to
1. read the file into R one line at a time
?readLines
2. do some string manipulations on the line
3. write the line to another text file.
I can handle the last two parts. Scan and read.table seem to read
the whole file in at once. Since this is a very large file (several
hundred thousand lines), this is not practical. Hence the idea of
reading one line at at time. The question is, can R read one line
at a time? If so, how? Any suggestions are appreciated.
Thanks,
Walt
________________________
Walter R. Paczkowski, Ph.D.
Data Analytics Corp.
44 Hamilton Lane
Plainsboro, NJ 08536
________________________
(V) 609-936-8999
(F) 609-936-3733
w...@dataanalyticscorp.com
www.dataanalyticscorp.com
_____________________________________________________
--
________________________
Walter R. Paczkowski, Ph.D.
Data Analytics Corp.
44 Hamilton Lane
Plainsboro, NJ 08536
________________________
(V) 609-936-8999
(F) 609-936-3733
w...@dataanalyticscorp.com
www.dataanalyticscorp.com
______________________________________________
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.
David Winsemius, MD
West Hartford, CT
______________________________________________
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.
