[Rd] range function with finite=T and logical parameters
tomas.kalibera at gmail.com
Tue Nov 7 15:55:57 CET 2017
FYI this has been fixed in R-devel by Martin
On 10/23/2017 06:36 PM, Martin Maechler wrote:
>>>>>> Lukas Stadler <lukas.stadler at oracle.com>
>>>>>> on Mon, 23 Oct 2017 15:56:55 +0200 writes:
> > Hi!
> > I was wondering about the behavior of the range function wrt. logical NAs:
> >> range(c(0L, 1L, NA), finite=T)
> >  0 1
> >> range(c(F, T, NA), finite=T)
> >  NA NA
> > The documentation is quite clear that "finite = TRUE includes na.rm = TRUE”, so that I would have assumed that these two snippets would produce the same result.
> > - Lukas
> I agree. Further, another informal "rule" would require that the two calls
> range(L, *)
> range(as.numeric(L), *)
> are equivalent for logical vectors L without attributes.
> I'll look into fixing this by an obvious change to (R-level)
> Note for the more advanced ones -- i.e. typical R-devel readers :
> T and F are variables in R. For that reason, using the language
> keywords TRUE and FALSE is much preferred in such cases. For
> some tests we'd even use
> T <- FALSE
> or even
> delayedAssign("F", stop("do not use 'F' when programming with R"))
> before running the tests -- just do ensure that the code to be
> tested does not use these short forms.
> Thank you, Lukas, for the report!
> R-devel at r-project.org mailing list
More information about the R-devel