[Rd] tapply/barplot (PR#6983)
Prof Brian Ripley
ripley at stats.ox.ac.uk
Tue Jun 15 14:31:59 CEST 2004
But not in R 1.9.1 beta, due for release next Monday. This has been
reported quite a few times already -- see the R-help archives and
PR#6676/7/8 and PR#6894, for example.
Note that the plots in 1.9.1 beta are deliberately different from 1.7.0.
On Tue, 15 Jun 2004 Vidar.Hjellvik at imr.no wrote:
> there seems to be a bug in tapply or barplot in R 1.9.0 that was not in =
> earlier versions.
It's not a bug, rather a design change. That change has been revisited in
> The following code creates two nice barplots in 1.7.0, =
> but the first one is bad in 1.9.0:
> x <- rep(1:10,10)
> y <- runif(100,1,100)
> z <- tapply(y,x,mean)
> although is.numeric(z) returns TRUE!
Yes, but z is a 1D array, and as.numeric makes it into a numeric *vector*.
Brian D. Ripley, ripley at stats.ox.ac.uk
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
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