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,
<phili...@cpanel1.stormweb.net> wrote:
Thanks Erin and Jim. You have indeed solved my problem.
Philip
Quoting Erin Hodgess <erinm.hodg...@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.hodg...@gmail.com
>
>
> On Sun, Aug 19, 2018 at 3:25 PM <phili...@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@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
______________________________________________
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______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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