Thanks. Could "timeDate" object be transformed to/from "zoo" or "xts"?
2014-09-30 9:01 GMT+08:00 Jeff Newmiller <jdnew...@dcn.davis.ca.us>: > If you read the documentation for that package you will find that the > answer is no, for the simple reason that it doesn't do input or output. It > does help you with conversions between POSIXt types, and can help figure > out which days are holidays or weekends, but you need the date in character > format to start. > > For reading in CSV data I use as.is=TRUE or stringsAsFactors=FALSE in my > call to read.csv. For reading xls files I have had difficulties, which is > why I prefer to export Excel data to CSV before reading it into R. One > XLConnect bug workaround I have used is to convert the timestamp column > into character using as.character with specified format and then back using > as.POSIXct and a specified timezone, but it was borne of desperation and > may not always be necessary or even sufficient. > > Please post using plain text rather than HTML format on this list. Only > you can prevent your postings from being garbled. > --------------------------------------------------------------------------- > Jeff Newmiller The ..... ..... Go Live... > DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live > Go... > Live: OO#.. Dead: OO#.. Playing > Research Engineer (Solar/Batteries O.O#. #.O#. with > /Software/Embedded Controllers) .OO#. .OO#. rocks...1k > --------------------------------------------------------------------------- > Sent from my phone. Please excuse my brevity. > > On September 29, 2014 2:47:01 AM PDT, jpm miao <miao...@gmail.com> wrote: > >Hi, > > > > timeDate package create a date vector like this: > > > > Dates <- c("1989-09-28","2001-01-15","2004-08-30","1990-02-09") > > > > > > I have a date whose size is large. Could this package read the dates > >from xls or txt files? Could we convert the read vector (e.g., I > >usually > >use XLConnect to read xls files) to the date? > > > > Thanks, > > > >Miao > > > > [[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. > > [[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.