[R] How to generate a sequence of dates without hardcoding the year

[Felipe Carrillo]

Thanks Jim and Enrique, that should work since I am only trying to show
the month along my X axis it regardless of what year it is.
 
Felipe D. Carrillo
Supervisory Fishery Biologist
Department of the Interior
US Fish & Wildlife Service
California, USA



----- Original Message ----
> From: jim holtman <jholtman at gmail.com>
> To: Felipe Carrillo <mazatlanmexico at yahoo.com>
> Cc: r-help at stat.math.ethz.ch
> Sent: Sat, July 24, 2010 4:02:57 PM
> Subject: Re: [R] How to generate a sequence of dates without hardcoding the 
>year
> 
> Is this what you want if you want to assume that the date without a
> year is this year:
> 
> > seq(as.Date("7-1","%m-%d"),by="week", length=52)
> [1] "2010-07-01" "2010-07-08" "2010-07-15" "2010-07-22" "2010-07-29"
> "2010-08-05" "2010-08-12" "2010-08-19"
> [9] "2010-08-26" "2010-09-02" "2010-09-09" "2010-09-16" "2010-09-23"
> "2010-09-30" "2010-10-07" "2010-10-14"
> [17] "2010-10-21" "2010-10-28" "2010-11-04" "2010-11-11" "2010-11-18"
> "2010-11-25" "2010-12-02" "2010-12-09"
> [25] "2010-12-16" "2010-12-23" "2010-12-30" "2011-01-06" "2011-01-13"
> "2011-01-20" "2011-01-27" "2011-02-03"
> [33] "2011-02-10" "2011-02-17" "2011-02-24" "2011-03-03" "2011-03-10"
> "2011-03-17" "2011-03-24" "2011-03-31"
> [41] "2011-04-07" "2011-04-14" "2011-04-21" "2011-04-28" "2011-05-05"
> "2011-05-12" "2011-05-19" "2011-05-26"
> [49] "2011-06-02" "2011-06-09" "2011-06-16" "2011-06-23"
> >
> 
> 
> On Sat, Jul 24, 2010 at 5:07 PM, Felipe Carrillo
> <mazatlanmexico at yahoo.com> wrote:
> > Hi:
> > I have a dataframe named 'spring' and I am trying to add a new variable 
named
> > 'IdDate'
> > This line of code works fine:
> > spring$idDate <- seq(as.Date("2008-07-01"),as.Date("2009-06-30"),by="week")
> >
> > But I don't want to hardcode the year because it will be used again the
> > following year
> > Is it possible to just generate dates with the month and day?
> >
> > I tried the code below:
> > seq(as.Date("7-1","%B%d"),as.Date("6-30","%B%d"),by="week")
> >
> > and got this error message:
> > Error in seq.int(0, to - from, by) : 'to' must be finite
> > Thanks for any pointers
> >
> >
> > Felipe D. Carrillo
> > Supervisory Fishery Biologist
> > Department of the Interior
> > US Fish & Wildlife Service
> > California, USA
> >
> >
> >
> >
> > ______________________________________________
> > R-help at 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
> Cincinnati, OH
> +1 513 646 9390
> 
> What is the problem that you are trying to solve?
>