However: if you need to repeat the process, as you wrote, you could store the column names in a separate object for future access after your first read.
B. On Mar 16, 2016, at 12:59 PM, Lida Zeighami <lid.z...@gmail.com> wrote: > Thank you Bert and Frederic. > > On Wed, Mar 16, 2016 at 11:52 AM, Bert Gunter <bgunter.4...@gmail.com> > wrote: > >> Is it really a .Rdata file? If so, the answer is no, AFAIK, since >> .Rdata files are serialized (binary) versions of e.g. worksheets that >> can contain many different data objects. "colnames" has no meaning in >> this context. >> >> Corrections welcome if I have it wrong! >> >> Cheers, >> Bert >> Bert Gunter >> >> "The trouble with having an open mind is that people keep coming along >> and sticking things into it." >> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) >> >> >> On Wed, Mar 16, 2016 at 8:59 AM, Lida Zeighami <lid.z...@gmail.com> wrote: >>> Hi, >>> I have a huge .RData file and I need just to get the colnames of it. so >> is >>> there any way to reach the column names without loading or reading the >>> whole file? >>> Since the file is so big and I need to repeat this process several times, >>> so it takes so long to load the file first and then take the colnames! >>> >>> Thanks >>> >>> [[alternative HTML version deleted]] >>> >>> ______________________________________________ >>> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >>> 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. >> > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.