Hi Saba, Try this: df<-matrix(c(0,NA,0,0,0,1,1,1,0,0,1,0,0,0,NA),nrow=3) dimdf<-dim(df) df1<-df==1 df[cbind(rep(FALSE,dimdf[1]),df1[,-dimdf[2]])]<-1
Jim On Fri, Sep 23, 2016 at 12:27 PM, Saba Sehrish via R-help <[email protected]> wrote: > Hi > > I have a matrix that contains 1565 rows and 132 columns. All the observations > are either "0" or "1". Now I want to keep all the observations same but just > one change, i.e. whenever there is "1", the very next value in the same row > should become "1". Please see below as a sample: > >>df > > 0 0 1 0 0 > NA 0 1 1 0 > 0 1 0 0 NA > > What I want is: > > > 0 0 1 1 0 > NA 0 1 1 1 > 0 1 1 0 NA > > > > I shall be thankful for the reply. > > > Saba > > ______________________________________________ > [email protected] mailing list -- To UNSUBSCRIBE and more, see > 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. ______________________________________________ [email protected] mailing list -- To UNSUBSCRIBE and more, see 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.
