[Rd] write.csv ignores 'row.names'
p.dalgaard at biostat.ku.dk
Thu Nov 24 18:02:13 CET 2005
Roger Peng <rpeng at jhsph.edu> writes:
> Okay, upon further examination, it appears that it works fine if you set
> 'row.names = FALSE' as opposed to 'row.names = F'.
Nope. It's still a bug and you're quite right that eval() is needed.
We can't have that an argument only works when supplied as an explicit
> Roger Peng wrote:
> > Upon replying to this email, I took a look at 'write.csv()' and noticed
> > something interesting. I remember there being a discussion sometime in
> > the past about letting 'write.csv()' accept the 'row.names' argument.
> > However, I get the following error:
> > > write.csv(airquality, file = "myfile.csv", row.names = F)
> > Error in write.table(airquality, file = "myfile.csv", row.names = F,
> > col.names = NA, :
> > col.names = NA makes no sense when row.names = FALSE
> > >
> > In 'write.csv()' there is
> > rn <- Call$row.names
> > Call$col.names <- if (is.logical(rn) && !rn)
> > TRUE
> > but is.logical(rn) is always FALSE because even if 'row.names' is
> > specified (non-NULL), it is of class "name". Perhaps something like
> > rn <- eval(Call$row.names)
> > would suffice? I can't tell if that would break anything.
> > -roger
> > Sven Schaltenbrand wrote:
> >> hallo,
> >> i have a problem by writing a csv file
> >> the first colum is filled with index numbers from 1 to n.
> >> i have to unique two csv files once a week while one file is always the
> >> same.
> >> can anybody tell me, how to write the dataset into a csv file without the
> >> first row of the indexnumbers.
> >> x[,-1] does not wok as it eliminates the first "interesting" colum.
> >> col.names is not accepted by r (do i habe to start a package first? which
> >> one?)
> >> thx
> >> sven
> >> [[alternative HTML version deleted]]
> >> ______________________________________________
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