# [R] as.Date() function

Erin Hodgess er|nm@hodge@@ @end|ng |rom gm@||@com
Wed Aug 22 03:03:24 CEST 2018

```Nice one!

On Tue, Aug 21, 2018 at 6:14 PM John Kane <jrkrideau using yahoo.ca> wrote:

> You loaded "lubridate" so using Erin's approach
>
> library(lubridate)
> st <- c("1961-01","1961-04","1983-02")
> dat1 <- ymd(paste( st, "01",  sep ="-"))
>
>
> On Monday, August 20, 2018, 1:15:56 a.m. EDT, <
> philipsm using cpanel1.stormweb.net> wrote:
>
>
> Thanks Erin and Jim. You have indeed solved my problem.
>
> Philip
>
>
> Quoting Erin Hodgess <erinm.hodgess using gmail.com>:
>
> > Hi Philip:
> >
> > Here is something to consider:
> >
> >> #potential solution:
> >> sta <- paste(st,"-01",sep="")
> >> st1 <- as.Date(sta, format=("%Y-%m-%d"))
> >> print(st1)
> > [1] "1961-01-01" "1961-04-01" "1983-02-01"
> >
> >
> > Hope this helps!
> > Erin
> >
> > Erin Hodgess, PhD
> > mailto: erinm.hodgess using gmail.com
> >
> >
> > On Sun, Aug 19, 2018 at 3:25 PM <philipsm using cpanel1.stormweb.net> wrote:
> >
> >> I am having trouble with what must be a very simple problem. Here is a
> >> reproducible example:
> >>
> >> library(lubridate)
> >> st <- c("1961-01","1961-04","1983-02")
> >> print(st)
> >> #[1] "1961-01" "1961-04" "1983-02"
> >> st1 <- as.Date(st, format=("%Y-%m"))
> >> print(st1)
> >> #[1] NA NA NA
> >>
> >> Why the heck am I getting three NAs instead of three Dates?I have
> >> studied the R documentation for as.Date() and it has not turned on the
> >> light bulb for me.
> >>
> >> ______________________________________________
> >> R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
> >> https://stat.ethz.ch/mailman/listinfo/r-help
> >> http://www.R-project.org/posting-guide.html
> >> and provide commented, minimal, self-contained, reproducible code.
> >>
>
> ______________________________________________
> R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
--
Erin Hodgess, PhD
mailto: erinm.hodgess using gmail.com

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