Hello M, My guess is that it has something to do with the class of the variables. Perhaps you could provide a small sample dataframe? Also you might try running str() on your data frame and seeing if the results are what you would expect. As a side note, it is not necessary to make an anonymous function here, as you are allowed to pass arguments to the function applied.
apply(canc[,vec],1, min, na.rm=TRUE) Best regards, Josh On Sat, Jun 5, 2010 at 8:30 AM, moleps <mole...@gmail.com> wrote: > I´m trying to tease out the minimum value from a row in a dataframe where all > the variables are dates. > > apply(canc[,vec],1,function(x)min(x,na.rm=T)) > > > However it only returns empty strings for the entire dataframe except for one > date value (which is not the minimum date). > > I´ve also tried > > apply(canc[,vec],1,function(x)max(x,na.rm=T)) > > which provides values rowwise, but many of them are not in fact the largest > in the row. > > > Any advice? > > > Regards, > > //M > > ______________________________________________ > 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. > -- Joshua Wiley Senior in Psychology University of California, Riverside http://www.joshuawiley.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.
