Thanks. Works A doubt. I asked that because I have a loop that can generate objects like that or this one
str(object) Named num [1:2] 670 314 - attr(*, "names")= chr [1:2] "x" "y" To avoid using a ifelse() to calculate means of x and y, I'd like a function that handle with this named numeric object and that list. Any chance of do it with a single function? 2009/8/3 David Winsemius <dwinsem...@comcast.net> > > On Aug 3, 2009, at 9:07 AM, Paulo Eduardo Cardoso wrote: > > Maybe a very basic question. >> How can I get mean of a object like this >> >> str(object) >>> >> num [1:53, 1:2] 734 734 736 734 736 ... >> - attr(*, "dimnames")=List of 2 >> ..$ : NULL >> ..$ : chr [1:2] "x" "y" >> >> I want the mean of both x and y >> > > apply(object, 2, mean) > > or... > > colMeans(object) # which will be faster > > > _______________ >> Paulo E. Cardoso >> >> [[alternative HTML version deleted]] >> >> __________________________________________ >> > > David Winsemius, MD > Heritage Laboratories > West Hartford, CT > > -- _______________ Paulo E. Cardoso [[alternative HTML version deleted]] ______________________________________________ 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.