I am always reserved about types and not sure how R auto casting works internally. In a large code using many different packages, I think being reserved about this would not hurt.
Also, are there anyway to force R to be "strongly typed" similar to Occaml etc... mem On 4 January 2013 16:35, arun <smartpink...@yahoo.com> wrote: > > As long as there are no negative numbers, method2 and 3 works: > test[1]<- -1 > length(which(test==0)) > #[1] 6 > length(which(test<1)) > #[1] 7 > length(which(test < .Machine$double.xmin)) > #[1] 7 > > length(which(abs(test)<1)) > #[1] 6 > length(which(abs(test) < .Machine$double.xmin)) > #[1] 6 > A.K. > > > > > ----- Original Message ----- > From: "Suzen, Mehmet" <msu...@gmail.com> > To: Hermann Norpois <hnorp...@googlemail.com> > Cc: R help <r-help@r-project.org> > Sent: Friday, January 4, 2013 12:27 AM > Subject: Re: [R] count appearence of zero in a vector > > Hi Hermann, > > You may want to use ?which, to store the index as well (might be handy > in debugging or some other > purposes if zeros has some special meaning) : > > test <- c(1, 1, 1 , 1 , 1, 1, 2, 1, 1, 1, 0, 2, 0, 1, 1, 0, 0, 0, 1, > 1, 1, 0, 1, 2, 1, 1, 1, 1, 1, 1) > length(which(test==0)) > > But be careful when using == 0. If you are sure that elements are all > integers I prefer this > > length(which(test <1)). > > Or a safe tolerance value from .Machine, if you are dealing with double > numbers. > > length(which(test < .Machine$double.xmin)) > > > -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. > ______________________________________________ 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.