I didn't quite understand your first post. Was it intended to assure that the operation was only on numeric variables? Otherwise I don't see the differnce in applying the operation to a totally numeric data.frame and a matrix.
-- On Fri, 5/20/11, bill.venab...@csiro.au <bill.venab...@csiro.au> wrote: > From: bill.venab...@csiro.au <bill.venab...@csiro.au> > Subject: Re: [R] Adding a numeric to all values in the dataframe > To: bill.venab...@csiro.au, ramya.vict...@gmail.com, r-help@r-project.org > Received: Friday, May 20, 2011, 9:37 PM > Oops > > The first line of my template should use data.matrix() > rather than data.frame() > > data.matrix() is guaranteed to return a numerical matrix > from a data frame, making arithmetic always possible. > > Bill Venables. > > ________________________________________ > From: Venables, Bill (CMIS, Dutton Park) > Sent: 20 May 2011 14:30 > To: 'Ramya'; 'r-help@r-project.org' > Subject: RE: [R] Adding a numeric to all values in the > dataframe > > For that kind of operation (unusual as it is) work with > numeric matrices. When you are finished, if you still > want a data frame, make it then, not before. > > If your data starts off as data frame to begin with, turn > it into a matrix first. E.g. > > myMatrix <- data.frame(myData) > myMatrix2 <- myMatrix + 2 > myData2 <- data.frame(myMatrix2) > > Bill Venables. > > -----Original Message----- > From: r-help-boun...@r-project.org > [mailto:r-help-boun...@r-project.org] > On Behalf Of Ramya > Sent: Friday, 20 May 2011 1:54 PM > To: r-help@r-project.org > Subject: [R] Adding a numeric to all values in the > dataframe > > Hi there > > I just want to add 2 to all the values in dataframe. > > I tried using sapply but it seem to die all the time. > > Any help would be appreciated. > > Thanks > Ramya > > -- > View this message in context: > http://r.789695.n4.nabble.com/Adding-a-numeric-to-all-values-in-the-dataframe-tp3537594p3537594.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. > > ______________________________________________ > 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. > ______________________________________________ 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.
