Ok I will try that. I think I set it to False when I tried it the first time, maybe that was my mistake
On Mon, May 3, 2010 at 3:28 PM, Ista Zahn <istaz...@gmail.com> wrote: > 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 > [[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.
