Still not clear. Follow the posting guide and some examples always help.
Not sure how you "concatenate" numbers? You can try, for example, apply(df[1:10,], 2, paste, collapse=" ") but this will turn everything into strings. Is this what you want? ..Tao ----- Original Message ---- > From: santana sarma <aimanusa...@gmail.com> > To: David Winsemius <dwinsem...@comcast.net> > Cc: r-help@r-project.org > Sent: Thu, May 20, 2010 9:21:33 PM > Subject: Re: [R] Concatenation > > Hi David, SORRY - I am trying to be more clearer this time. Let's > say the dataframe has some rows and columns, with unique rownames and column > names. The rest of the data in the dataframe are just numbers. I wish to > concatenate those rows. That means : I wish to concatenate first 10 rows' > values in one row, then next 20 rows's values in the next row .... and so > on. Similarly, for columns : The first 10 column's values will be one > below the other ... and so on. Cheers, = = = = = = = = > = = = On Fri, May 21, 2010 at 3:53 PM, David Winsemius < > ymailto="mailto:dwinsem...@comcast.net"; > href="mailto:dwinsem...@comcast.net";>dwinsem...@comcast.net>wrote: > > > On May 20, 2010, at 11:05 PM, santana sarma wrote: > > > Hi, >> >> I have a dataframe with some 800 rows and 14 > columns. >> >> Could you please advise how I can concatenate > the rows - one after >> another. >> Similarly for columns, one > below the other. >> > > Not sure exactly what you are > after: > > unlist might accomplish the second task. > > > Whether c(apply(df, 1, I)) would be satisfactory for the first task > might > depend on whether the columns in the dataframe were all of the > same type. > Now that I think of it, both soolutions would force the types > to be that > same. > > ?"c" > ?I > > ?apply > > df[1:nrow(df), ] ... would essentially give > you the first request, but > it would not be any different than just > typing df. So .... what do intend > this process to > accomplish? > > -- > > David Winsemius, MD > West > Hartford, CT > > [[alternative HTML > version deleted]] ______________________________________________ > ymailto="mailto:R-help@r-project.org"; > href="mailto:R-help@r-project.org";>R-help@r-project.org mailing list > href="https://stat.ethz.ch/mailman/listinfo/r-help"; target=_blank > >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 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.
