Hi Prof Brian,

Thanks for the solution.

cbind() certainly works in this example, but it won't work in my case.
I m doing bootstrap and generating lots of data (2 x 10 power 6).
I tried to create this much big matrix but my machine won't let me do it.
In cbind() also, the situation will be the same, the difference is that the
bit matrix will be formed at the end.

That's why i need some way through which i can properly append to the file
and don't have to create big matrix which i can't.


On 4/20/07, Prof Brian Ripley <ripley@stats.ox.ac.uk> wrote:
>
> The output is
>
> "","V1","V2","V3"
> "1",0,0,0
> "2",0,0,0
> "","V1","V2","V3"
> "1",1,1,1
> "2",1,1,1
>
> and the warning is because no csv-reader is going to make much sense of
> that.
>
> You want col.names=FALSE on the second call.
>
>
> On Fri, 20 Apr 2007, Vaibhav Gathibandhe wrote:
>
> > Hello R-Experts,
> >
> > I am a beginner to R. Can someone please look at my problem
> >
> > I am trying to append the files in R but couldn't get the answer
> properly.
> >
> > My code is
> >
> > mat1<-matrix(0,2,3)
> > mat2<-matrix(1,2,3)
> >
> > write.table(mat1,"foo.csv",sep=",",col.names=NA)
> > write.table(mat2,"foo.csv", sep=",", col.names=NA, append = TRUE)
> >
> > I am getting a warning message:
> >
> > Warning message:
> > appending column names to file in: write.table(mat2, "foo.csv", sep =
> ",",
> > col.names = NA, append = TRUE)
> >
> > Moreover the data of *mat2* is getting appended to "foo.csv" in the
> > following way
> >
> >       V1    V2     V3 1 0 0 0 2 0 0 0     V1    V2     V3 1 1 1 1 2 1 1
> 1
> >
> > If data is getting appended then why I am getting the warning message?
> >
> > Moreover is there any way by which i can get the data of *mat2* beside
> the
> > data of *mat1* instead of below?
>
> Not by appending to a file.  You can use cbind() in R.
>
> >
> >
> > Thanks and Regards,
> > Vaibhav Gathibandhe
> >
> >       [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help@stat.math.ethz.ch 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.
> >
>
> --
> Brian D. Ripley,                  ripley@stats.ox.ac.uk
> Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
> University of Oxford,             Tel:  +44 1865 272861 (self)
> 1 South Parks Road,                     +44 1865 272866 (PA)
> Oxford OX1 3TG, UK                Fax:  +44 1865 272595
>

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