Hi Steve, I think you just need to set col.names = FALSE (instead of col.names =NULL) on subsequent writes.
-Ista On Mon, May 3, 2010 at 5:19 PM, steven mosher <mosherste...@gmail.com> wrote: > The situation arises where I open a file to write a data.frame to it. with > write.table. > > multiple lines are written to the file and the file is kept in Append=TRUE > mode. > > If one sets the col.names to the names of the variables being written, you > have output > that looks like this... > > name1 name2 name3..... > > x x x > x x x > x x x > name1 name2 name 3 > x x x > x x x > x x x > > And so forth as each time write is called, the col.names are written. > > Setting col.names=NULL obviously removes them. > > I thought a simple solution would be to check for the file existence first > and on the first write, include the col.names. with append=T. > on subsequent writes, col.names would be set to NULL. > that didnt work and threw warnings. > > Is there anyway to do this. basically open a file for writing, with > append=TRUE and only write the col.names once > at the first write. or am I stuck and forced to write the whole file without > the col.names and then read back in and rewrite > with col.names="the cols names I want" > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > -- Ista Zahn Graduate student University of Rochester Department of Clinical and Social Psychology http://yourpsyche.org ______________________________________________ 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.
