Hello. I have a data frame with two variables where x are incomplete sequences. I would like to see how I could complete the sequences in x and insert the missing values in y. # Example data missing 5 and 7 x <- c(1:5, 8:10) y <- rnorm(8) data <- data.frame(x,y) data # Output # x y #1 1 -1.0693219 #2 2 0.9134950 #3 3 1.3231290 #4 4 -1.1376213 #5 5 0.5367879 #6 8 0.9595294 #7 9 -0.3254167 #8 10 0.1358020 # Expected output after some manipulations x y 1 1 -1.0693219 2 2 0.9134950 3 3 1.3231290 4 4 -1.1376213 5 5 0.5367879 6 6 NA 7 7 NA 8 8 0.9595294 9 9 -0.3254167 10 10 0.1358020 Thanks a lot in advance! Best, Mike