On Thu, 28 Jun 2007, Peter Ruckdeschel wrote: > Hi, > > I found the following strange effect with > qbinom & partial argument matching > > p0 <- pbinom(0, size = 3, prob = 0.25) > qbinom(p0, size = 3, prob = 0.25) ## 0 o.k. > qbinom(p0-0.05, size = 3, prob = 0.25) ## 0 o.k. > > ## positional matching: > qbinom(p0, 3, 0.25) ## 0 o.k. > > ## partial argument matching: > qbinom(p0 , s = 3, p = 0.25) ## 1 ??? > qbinom(p0-0.05, s = 3, p = 0.25) ## 1 ??? > qbinom(p0-0.06, s = 3, p = 0.25) ## 0 o.K. > > Unfortunately I have no I idea how to fix this.
You use a call that specifies your intentions accurately. This is not 'partial argument matching': 'p' is an exact match to the first argument of > args(qbinom) function (p, size, prob, lower.tail = TRUE, log.p = FALSE) and that is how argument matching in R is documented to work. The 'inaccuracy' is in the diagnosis: please see the FAQ. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
