Howdy- I recently upgraded to R 2.9.1 and did the updates for all of my packages. A few of them now *suggest* the TZ variable to be set, which I did:
> Sys.getenv("TZ") TZ "" > Sys.setenv(TZ="America/New_York") > Sys.getenv("TZ") TZ "America/New_York" Next up: library(RODBC) library(quantmod) channel <- odbcConnect("mylovelydb") > GS = sqlQuery(channel, paste("select Date, o, h, l, c, v from GS ORDER BY Date ASC")) Error in as.POSIXlt.character(x, tz, ...) : character string is not in a standard unambiguous format In addition: Warning messages: 1: In structure(.Internal(as.POSIXct(x, tz)), class = c("POSIXt", "POSIXct"), : unknown timezone 'merica/New_York' Strange thing: I set up the same thing with R2.9.0 (and as expected, I got warnings when loading libraries that were built on 2.9.1, but that's ok) -- everything above works with 2.9.0 fine and dandy. I am wondering how could the TZ, which is "America/New_York" become a malformed character ('A'). It seems to be either a RODBC issue or something more sinister under the hood with retrieving the TZ environment variable? Note, this all works in 2.9.1 if the TZ variable is set to GMT. I can live with that for the time being as a workaround. To further aid in debugging, I've attached my sessionInfo output: > sessionInfo() R version 2.9.1 (2009-06-26) i386-pc-mingw32 locale: LC_COLLATE=English_United States.1252;LC_CTYPE=English_United States.1252;LC_MONETARY=English_United States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252 attached base packages: [1] stats graphics grDevices datasets tcltk utils methods base other attached packages: [1] quantmod_0.3-10 TTR_0.2 Defaults_1.1-1 xts_0.6-6 zoo_1.5-6 [6] RODBC_1.2-6 svSocket_0.9-43 svMisc_0.9-48 TinnR_1.0.3 R2HTML_1.59-1 [11] Hmisc_3.6-0 rcom_2.1-3 rscproxy_1.3-1 loaded via a namespace (and not attached): [1] cluster_1.12.0 grid_2.9.0 lattice_0.17-25 tools_2.9.0 Any help would be much appreciated. Regards, CJ -- Cedrick W. Johnson aim) cedrickjcvgr www.cedrickjohnson.com ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.