>>>>> "MM" == Martin Maechler <[EMAIL PROTECTED]> >>>>> on Fri, 2 Dec 2005 14:44:22 +0100 writes:
>>>>> "BeT" == Berwin A Turlach <[EMAIL PROTECTED]> >>>>> on Fri, 2 Dec 2005 18:31:13 +0800 writes: BeT> First, I recently had reasons to read the help page of as.vector() and BeT> noticed in the example section the following example: BeT> x <- c(a = 1, b = 2) BeT> is.vector(x) BeT> as.vector(x) BeT> all.equal(x, as.vector(x)) ## FALSE MM> actually 'FALSE' was never the case, but "non-TRUE" once was, see below. BeT> However, in all versions of R in which I executed this example, the BeT> all.equal command returned TRUE which suggest that either the comment BeT> in the help file is wrong or the all.equal/as.vector combination does BeT> not work as intended in this case. For the former case, I attach BeT> below a patch which would fix vector.Rd. MM> We recently had the following posting on R-devel MM> https://stat.ethz.ch/pipermail/r-devel/2005-October/034962.html MM> (Subject: [Rd] all.equal() improvements (PR#8191)) MM> where Andrew Piskorsky proposed a (quite MM> extensive) patch to all.equal() in order to make sure that MM> things like names must match for all.equal() to return TRUE. I'm testing the first part of Andy's proposition {the 2nd part was about making the result strings more informative for the case where all.equal() does *not* return TRUE}. Interestingly, it did break 'make check' and because of a somewhat subtle reason; something we could consider an other (typically inconsequential) inconsistency : t() drops dimnames when they are list(NULL,NULL) and has been doing so at least since R version 1.0.0 : x <- cbind(1:2, 2:1); dimnames(x) <- list(NULL, NULL) identical(x, t(x)) ## -> FALSE ! str(t(x)) # "no dimnames" (i.e. dimnames(x) === NULL) Now I'm looking into changing that one.... Martin ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel