Offhand, I suspect that the NAs are in the 8th column. > On 26 Aug 2020, at 10:57 , Elham Daadmehr <e.daadm...@gmail.com> wrote: > > Hi all, > > I have a simple problem. I get stuck in using the imported spss data (.sav) > using "read.spss". > I imported data (z) without any problem. After importing, the first column > doesn't contain any "NA". but when I choose a subset of it (like: > z[z[,8]=="11"|z[,8]=="12"|z[,8]=="14",]), lots of NA appears (even in the > first column). > > The (.sav) file is the output of Compustat (WRDS). > > It is terrible, I can't find the mistake. > > Thank you in advance for your help, > Elham > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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.
-- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Office: A 4.23 Email: pd....@cbs.dk Priv: pda...@gmail.com ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.