you probably need to read the Introduction to R to understand indexing: > x Obs X Y Z 1 1 1 0 1 2 2 0 0 1 3 3 1 1 1 4 4 0 1 1 5 5 1 1 0 6 6 0 0 0 > x[4, "Y"] <- 0 > x Obs X Y Z 1 1 1 0 1 2 2 0 0 1 3 3 1 1 1 4 4 0 0 1 5 5 1 1 0 6 6 0 0 0
On Fri, Jun 10, 2011 at 5:42 PM, jour4life <jour4l...@gmail.com> wrote: > Hello all, > > I am wondering if there is a way to change the value of one cell in R. For > instance let's say I have a hypothetical data frame that looks like this: > > Obs X Y Z > 1 1 0 1 > 2 0 0 1 > 3 1 1 1 > 4 0 1 1 > 5 1 1 0 > 6 0 0 0 > > I would like to change the value of the 4th observation in the Y column from > 1 to 0. It should look like this: > > Obs X Y Z > 1 1 0 1 > 2 0 0 1 > 3 1 1 1 > 4 0 0 1 > 5 1 1 0 > 6 0 0 0 > > Is it possible to change the value in one command? > > Thanks, > > Carlos > > > -- > View this message in context: > http://r.789695.n4.nabble.com/change-value-in-one-cell-tp3589456p3589456.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. > -- Jim Holtman Data Munger Guru What is the problem that you are trying to solve? ______________________________________________ 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.