Wanted to raise two questions: 1. Is bugs.r-project.org down? I haven't been able to reach it for two or three days:
``` ping bugs.r-project.org PING rbugs.research.att.com (207.140.168.137): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 Request timeout for icmp_seq 3 Request timeout for icmp_seq 4 Request timeout for icmp_seq 5 Request timeout for icmp_seq 6 ``` 2. Is wday element of POSIXlt meant to be timezone invariant? You would expect the wday element to be invariant to the timezone of a date. That is, the same date/time instant of 5th October 2013 in both Australia/Sydney and UTC should be a Saturday (i.e. wday = 6). And indeed that is the case with 1 min past midnight on 5 October 2013: ``` library(lubridate) d_utc <- ymd_hms(20131005000001, tz='UTC') d_local <- ymd_hms(20131005000001, tz='Australia/Sydney') as.POSIXlt(x=d_utc, tz=tz(d_utc))$wday # 6 as.POSIXlt(x=d_local, tz=tz(d_local))$wday # 6 ``` But this isn't always the case. For example, ``` d_utc <- ymd_hms(20381002000001, tz='UTC') d_local <- ymd_hms(20381002000001, tz='Australia/Sydney') as.POSIXlt(x=d_utc, tz=tz(d_utc))$wday # 6 as.POSIXlt(x=d_local, tz=tz(d_local))$wday # 5 ``` Is this expected behaviour? I would have expected a properly encoded date/time of 2 Oct 2038 to be a Saturday irrespective of its time zone. Obligatory system dump: ``` > sessionInfo() R version 3.0.1 (2013-05-16) Platform: x86_64-apple-darwin12.4.0 (64-bit) locale: [1] en_AU.UTF-8/en_AU.UTF-8/en_AU.UTF-8/C/en_AU.UTF-8/en_AU.UTF-8 attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] lubridate_1.3.0 testthat_0.7.1 devtools_1.3 loaded via a namespace (and not attached): [1] colorspace_1.2-4 dichromat_2.0-0 digest_0.6.3 evaluate_0.5.1 [5] ggplot2_0.9.3.1 grid_3.0.1 gtable_0.1.2 httr_0.2 [9] labeling_0.2 MASS_7.3-29 memoise_0.1 munsell_0.4.2 [13] parallel_3.0.1 plyr_1.8 proto_0.3-10 RColorBrewer_1.0-5 [17] RCurl_1.95-4.1 reshape2_1.2.2 scales_0.2.3 stringr_0.6.2 [21] tools_3.0.1 whisker_0.3-2 ``` Using R compiled by homebrew [1]. But also experiencing the same bug using R installed on Windows 7 from the CRAN binaries. For those interested, I've also noted this on the `lubridate` Github issues page [2], even though this doesn't appear to be a lubridate issue. Thanks for any help. [1] http://brew.sh [2] https://github.com/hadley/lubridate/issues/209 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
