Nikola Markov wrote: > I have multicolumn data.frames with the first comumn giving ordinal > observation index ( ex.: 1 4 7 9 11 13 etc). I would like to fill up the > missing observations (i.e. 2 3 5 6 8 etc) with "NA"s.
Please specify reproducible examples, they make it much easier to help! If you have: df <- data.frame(index = c(1, 4, 7), x1 = 1:3, x2 = 3:1) df Then you can say: temp <- data.frame(index = 1:max(df$index)) df <- merge(temp, df, all.x = TRUE) df Uwe Ligges > Thank you > > ______________________________________________ > R-help@stat.math.ethz.ch 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@stat.math.ethz.ch 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.