Many thanks, Stéphane
Le 30 mars 2015 à 10:42, peter dalgaard <pda...@gmail.com> a écrit : > >> On 30 Mar 2015, at 09:59 , Stéphane Adamowicz >> <stephane.adamow...@avignon.inra.fr> wrote: >> >> >> However, in order to help me understand, would you be so kind as to give me >> a matrix or data.frame example where « complete.cases(X)== T » or « >> complete.cases(X)== TRUE » would give some unwanted result ? > > The standard problem with T for TRUE is if T has been used for some other > purpose, like a time variable. E.g., T <- 0 ; complete.cases(X)==T. > > complete.cases()==TRUE is just silly, like (x==0)==TRUE or > ((x==0)==TRUE)==TRUE). > > (However, notice that x==TRUE is different from as.logical(x) if x is > numeric, so ifelse(x,y,z) may differ from ifelse(x==TRUE,y,z).) > > -- > Peter Dalgaard, Professor, > Center for Statistics, Copenhagen Business School > Solbjerg Plads 3, 2000 Frederiksberg, Denmark > Phone: (+45)38153501 > 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.
