On 17-03-2013, at 16:47, Miguel Eduardo Delgado Burbano <mdelgadoburb...@gmail.com> wrote:
> hello all > > I am writing a quite simple script to study dental wear patterns in humans > and I wrote this function > > sqrt(var(Y1)+var(Y2))^2-4(var(Y1)*(var(Y2)-cov(Y1,Y2)^2)) but appear this > error message > > Error: attempt to apply non-function > Write 4*( instead of 4( assuming you want to multiply. > alternatively I wrote this > sqrt(var(Y1)+var(Y2)^2)-4[(var(Y1)*(var(Y2)-cov(Y1,Y2)^2))] > > but this error message appear > > [1] NA > Warning message: > NAs introduced by coercion > [ is an indexing operator. You are trying to index the number 4. Which is impossible. Berend > some suggestion to solve this?? thank you so much for your help > > Miguel > > [[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. ______________________________________________ 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.
