'f$V1' is a factor. try
as.POSIXct(as.character(f$V1), format="%m/%d/%Y %H:%M:%S") You need to convert to a character first. On Mon, Sep 12, 2011 at 7:24 PM, bradford <fingerm...@gmail.com> wrote: > I don't know R, so maybe I've done something wrong, but I'm working off an > example I saw on the web and wondering why as.POXIXct isn't returning the > same result on f$V1 as it is on z. Did I do something wrong? Or is it a > problem with my build? > >> f$V1 > [1] 09/11/2011 13:46:39 09/11/2011 13:45:18 09/11/2011 13:44:58 > [4] 09/11/2011 13:40:02 09/11/2011 13:37:58 09/11/2011 13:36:09 > [7] 09/11/2011 13:32:31 09/11/2011 13:25:29 09/11/2011 13:24:40 > [10] 09/11/2011 13:23:48 > 10 Levels: 09/11/2011 13:23:48 09/11/2011 13:24:40 ... 09/11/2011 13:46:39 >> z > [1] "09/11/2011 13:46:39" >> as.POSIXct(z, format="%m/%d/%Y %H:%M:%S") > [1] "2011-09-11 13:46:39 EDT" >> as.POSIXct(f$V1, format="%m/%d/%Y %H:%M:%S") > [1] "0009-11-20 EST" "0009-11-20 EST" "0009-11-20 EST" "0009-11-20 EST" > [5] "0009-11-20 EST" "0009-11-20 EST" "0009-11-20 EST" "0009-11-20 EST" > [9] "0009-11-20 EST" "0009-11-20 EST" > > --------- > R version 2.12.2 (2011-02-25) > Copyright (C) 2011 The R Foundation for Statistical Computing > ISBN 3-900051-07-0 > Platform: x86_64-apple-darwin10.8.0 (64-bit) > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > -- Jim Holtman Data Munger Guru What is the problem that you are trying to solve? ______________________________________________ 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.
