Dear help-list, I have a problem with timeSequence {timeDate}.
When I use it like > timeSequence(from = "2008-01-01", to = "2010-12-13", by = "1 month") GMT [1] [2008-01-01] [2008-02-01] [2008-03-01] [2008-04-01] [2008-05-01] [2008-06-01] [2008-07-01] [2008-08-01] [2008-09-01] [2008-10-01] [2008-11-01] [12] [2008-12-01] [2009-01-01] [2009-02-01] [2009-03-01] [2009-04-01] [2009-05-01] [2009-06-01] [2009-07-01] [2009-08-01] [2009-09-01] [2009-10-01] [23] [2009-11-01] [2009-12-01] [2010-01-01] [2010-02-01] [2010-03-01] [2010-04-01] [2010-05-01] [2010-06-01] [2010-07-01] [2010-08-01] [2010-09-01] [34] [2010-10-01] [2010-11-01] [2010-12-01] The result is as expected: a list of dates with all dates smaller then the "to" date. But somehow it behaves strange when I use it with a different starting date: > test <- timeSequence(from = "2008-01-15", to = "2010-12-13", by = "1 month") GMT [1] [2008-01-15] [2008-02-15] [2008-03-15] [2008-04-15] [2008-05-15] [2008-06-15] [2008-07-15] [2008-08-15] [2008-09-15] [2008-10-15] [2008-11-15] [12] [2008-12-15] [2009-01-15] [2009-02-15] [2009-03-15] [2009-04-15] [2009-05-15] [2009-06-15] [2009-07-15] [2009-08-15] [2009-09-15] [2009-10-15] [23] [2009-11-15] [2009-12-15] [2010-01-15] [2010-02-15] [2010-03-15] [2010-04-15] [2010-05-15] [2010-06-15] [2010-07-15] [2010-08-15] [2010-09-15] [34] [2010-10-15] [2010-11-15] [2010-12-15] In this case the last calculated date is obviously LARGER than the "to" date: > as.Date(test[length(test)]) < "2010-12-13" [1] FALSE This seem to occur also with other parameters: > timeSequence(from = "1999-12-12", to = "2000-06-08", by = "2 months") GMT [1] [1999-12-12] [2000-02-12] [2000-04-12] [2000-06-12] > timeSequence(from = as.Date("1999-12-12"), to = as.Date("2000-06-08"), by = "2 months") GMT [1] [1999-12-12] [2000-02-12] [2000-04-12] [2000-06-12] Am I missing something essential in using timeSequence? Is this behavior wanted (then I don't get why it should...)? Is there a better way to get those dates? Thanks for reading and greetings, Benjamin Benjamin B. Hamburg, Germany ______________________________________________ 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.