You are welcome. -Don
Sent with Good (www.good.com) -----Original Message----- From: Martin Maechler [maech...@stat.math.ethz.ch<mailto:maech...@stat.math.ethz.ch>] Sent: Tuesday, September 09, 2014 07:19 AM Pacific Standard Time To: MacQueen, Don Cc: R-devel@r-project.org Subject: Re: [Rd] Problem with order() and I() >>>>> MacQueen, Don <macque...@llnl.gov> >>>>> on Mon, 8 Sep 2014 16:06:21 +0000 writes: > I have found that order() fails in a rather arcane circumstance, as in > this example: >> foo <- I( c('x','\265g') ) >> order(foo) > Error in if (xi > xj) 1L else -1L : missing value where TRUE/FALSE needed >> foo <-c('x','\265g') >> order(foo) > [1] 1 2 yes, this is not desirable. order() in such cases calls xtfrm() {as documented} and that ends up calling rank() and then the internal .gt() where the bug happens because > I("x") > I("\xb5g") [1] NA but really I think the change should happen in xtfrm.Asis(.) which I think should drop the class also in this case. More on this, once we have fixed it. Thank you, Don, very much! Martin Maechler, ETH Zurich >> sessionInfo() > R version 3.1.1 (2014-07-10) > Platform: x86_64-apple-darwin13.1.0 (64-bit) > locale: > [1] C > attached base packages: > [1] stats graphics grDevices utils datasets methods base > Thanks > -Don > p.s. > Just a little background, irrelevant unless one wonders why I¹m using I() > and \265: > If I were writing new code I wouldn¹t be using I(), since there are better > ways now to achieve the same end (preventing the creation of factors in > data frames), but the scripts that use it are quite old, originally > developed in 2001. > In at least some but perhaps limited contexts, Œ\265¹ produces the greek > letter mu, and that¹s why I¹m using it. And if I remember correctly, 2001 > is prior to the current R support for locales and extended character sets. > Using \265 is what I could find at that time to get a mu into my output. > I came across this while checking some things; it¹s not actually breaking > my scripts, so I doubt it¹s due to any recent change. > -- > Don MacQueen > Lawrence Livermore National Laboratory > 7000 East Ave., L-627 > Livermore, CA 94550 > 925-423-1062 > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
