Dear Hans, r-help-requ...@r-project.org wrote on 2020-01-09 12:00:
Date: Wed, 8 Jan 2020 12:09:55 +0100 From: Hans W Borchers <hwborch...@gmail.com> To: R help project <r-help@r-project.org> Subject: [R] Which external functions are called in a package? [Solved]NB: `trapz`, ie. the trapezoidal integration formula, seems to be the numerical function to be missed the most in R base.
In R base indeed. However available in Frank Harrels Hmisc as the function trap.rule(x, y) for sorted values.
In plain R: function(x, y) sum(diff(x) * (y[-1] + y[-length(y)]))/2 Helmut -- Ing. Helmut Schütz BEBAC – Consultancy Services for Bioequivalence and Bioavailability Studies Neubaugasse 36/11 1070 Vienna, Austria W https://bebac.at/ F https://forum.bebac.at/ ______________________________________________ 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.
