Further losing my marbles. I *think* this is a subtle bug in the comparison operator for package_version objects that will be dependent on small (platform-dependent) numerical computation differences, possibly (???) introduced in r66259.
If I have not completely lost it (which is entirely possible), the problem stems from the fact that floor(log(8,base=8L)) is 0 rather than 1 on my machine, since log(8,base=8L) is slightly less than 1 rather than equal to 1. All of the following possibly entertaining code comes from excavating the guts of src/library/base/R/version.R : this file was changed on July 27 < https://github.com/wch/r-source/commit/ce6732242c0757e07ebc4a5efb7d210cba6a0cfa> , which makes me suspicious, but I don't see directly how the modifications would have broken this. ## basic sanity-test of package version comparison as.package_version("1.0.0")>=as.package_version("0.9.9") ## TRUE ## the specific comparison I'm trying to make: (e1 <- as.package_version("1.8.1"))>=(e2 <- as.package_version("1.7.1")) ## FALSE (!!!) unclass(e1) ## 1 8 1 unclass(e2) ## 1 7 1 ## part of the internal function operation .encode_numeric_version intwid <- log(max(unlist(e1), unlist(e2), 1L, na.rm = TRUE), base = 8L) ## (why base 8? Tom Lehrer: "base eight is just like base ten really if you're missing two fingers") ## I can see that we're sprintf()ing the results in octal a few lines later ...) ## 1 -- looks OK, but: intwid-1 ## [1] -1.110223e-16 width <- floor(intwid) + 1L ## this is the calculation that actually gets done: ## ## 1 ## should be 2 log(8, base=8L)-1 log(8, base=8)-1 logvals <- setNames(log(2:25,base=2:25)-1,2:25) logvals[logvals!=0] ## 5,8,14,18,19,25 all == .Machine$double.eps/2 w1 <- .encode_numeric_version(e1, width = width, maxlen = maxlen) ## "1101" w2 <- .encode_numeric_version(e2, width = width, maxlen = maxlen) ## "171" w1>w2 ## FALSE w1A <- .encode_numeric_version(e1, width = 2, maxlen = maxlen) ## "011001" w2A <- .encode_numeric_version(e2, width = 2, maxlen = maxlen) ## "010701" w1A>w2A ## TRUE If I had the patience I would revert to before this SVN change and see what happened: ================= r66259 | hornik | 2014-07-27 15:45:29 -0400 (Sun, 27 Jul 2014) | 2 lines Have .encode_numeric_version() pad to common length with trailing zeros. Add [<-.numeric_version(). On Mon, Sep 1, 2014 at 4:16 PM, Ben Bolker <bbol...@gmail.com> wrote: > thanks -- although I think `dplyr` is a red herring; my issue is with > `plyr` (which is imported by `ggplot2` so should get installed > automatically anyway ...) > > > On Mon, Sep 1, 2014 at 4:08 PM, Carl Boettiger <cboet...@gmail.com> wrote: > >> Hi Ben, >> >> Just tested this on a fresh ubuntu 14:04 sandbox by using Dirk's docker >> image ( >> https://github.com/eddelbuettel/docker-ubuntu-r/tree/master/add-r-devel-san) >> for Rdevel. >> >> > install.packages(c("dplyr", "ggplot2")) >> > library("dplyr") >> > library("ggplot2") >> >> runs fine for me (though takes a few minutes to compile everything). So >> it seems you must have done something to your local environment, but not >> sure what. >> >> >> >> >> On Mon, Sep 1, 2014 at 11:42 AM, Ben Bolker <bbol...@gmail.com> wrote: >> >>> >>> I apologize in advance for not having done more homework in advance, >>> but thought I would send this along to see if anyone else was seeing >>> this. >>> >>> I am having some sort of ggplot2/plyr/very-recent-R-devel dependency >>> issues. >>> >>> Just installed >>> >>> R Under development (unstable) (2014-09-01 r66509) -- "Unsuffered >>> Consequences" >>> >>> from source. >>> >>> > packageVersion("ggplot2") >>> [1] ‘1.0.0’ >>> > packageVersion("plyr") >>> [1] ‘1.8.1’ >>> >>> library(plyr) works >>> >>> but then I get: >>> >>> library(ggplot2) >>> Error in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = >>> vI[[i]]) : >>> namespace ‘plyr’ 1.8.1 is being loaded, but >= 1.7.1 is required >>> Error: package or namespace load failed for ‘ggplot2’ >>> >>> I don't remember when I most recently updated my r-devel (it was >>> probably a few months old); nothing in recent commits rings a bell. >>> >>> Works fine on R version 3.1.1 (except for a "ggplot2 built under >>> 3.2.0 warning"). >>> >>> Does anyone else see this or is it just something weird about my setup? >>> >>> Ben Bolker >>> >>> ______________________________________________ >>> R-devel@r-project.org mailing list >>> https://stat.ethz.ch/mailman/listinfo/r-devel >>> >> >> >> >> -- >> Carl Boettiger >> UC Santa Cruz >> http://carlboettiger.info/ >> > > [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
