Hi Izhak, If the position of the elements to be replaced follow the pattern below: seq(1,length(t), by=7) #[1] 1 8 15
t[seq(1,length(t), by=7)] <- c(50,90,100) A.K. On Monday, June 30, 2014 4:19 PM, "Adams, Jean" <jvad...@usgs.gov> wrote: t[1, 1] <- 50 t[3, 2] <- 90 t[5, 3] <- 100 Jean On Mon, Jun 30, 2014 at 10:27 AM, IZHAK shabsogh <ishaqb...@yahoo.com> wrote: > > > kindly guide me on how i can delete and replace an element from a matrix t > below > > for example delete first element in column one and replace it with 50, > third element in column 2 by 90 and fifth element in column 3 by 100 > > > t1<-c(1,2,3,4,5) > t2<-c(6,7,8,9,10) > t3<-c(11,12,13,14,15) > t<-cbind(t1,t2,t3) > > > thanks > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > [[alternative HTML version deleted]] ______________________________________________ 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.