Hi, I am working on a data set which looks like this:
> head(temp) Day Month Year PW ROW 1 1 1 1959 NA 6.40 2 2 1 1959 6.65 6.35 3 3 1 1959 2.50 3.60 4 4 1 1959 0.60 2.25 5 5 1 1959 0.85 0.30 6 6 1 1959 0.00 2.20 I am trying to extract all the rows containing NA. I can extrat all the rows without NAs in column 4 using > PWna<-temp[complete.cases(temp[,4]),] > head(PWna) Day Month Year PW ROW 2 2 1 1959 6.65 6.35 3 3 1 1959 2.50 3.60 4 4 1 1959 0.60 2.25 5 5 1 1959 0.85 0.30 6 6 1 1959 0.00 2.20 7 7 1 1959 1.40 1.65 But can't figure out how to extract the rows WITH the NAs. Can anyone advise me? Thanks in advance -- View this message in context: http://r.789695.n4.nabble.com/Extracting-dataframe-rows-containing-NAs-in-one-column-tp3937361p3937361.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
