data<-matrix(rnorm(10)) data[c(1,4,6)]<-NA print(data) data<-matrix(data[!is.na(data)]) print(data) ----- ---- Isaac Research Assistant Quantitative Finance Faculty, UTS -- View this message in context: http://r.789695.n4.nabble.com/problem-in-R-tp4260254p4260976.html Sent from the R help mailing list archive at Nabble.com.