Worik,

You need a day!

as in:
as.Date("1-Sep-1981", format="%d-%b-%Y")  ## first of the month

HTH,
Jim Porzak
Ancestry.com
San Francisco, CA
www.linkedin.com/in/jimporzak
use R! Group SF: www.meetup.com/R-Users/


On Thu, Sep 24, 2009 at 4:15 PM, Worik R <worikr@gmail.com> wrote:

> I have trouble with this:
>
> as.Date("Sep-1981", format="%b-%Y")
>
> Returns "NA"
>
> >From documentation for strftime
>
>  '%b' Abbreviated month name in the current locale. (Also matches
>          full name on input.)
>
>   '%Y' Year with century.
>
> What am I doing wrong?
>
> cheers
> Worik
>
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>
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