With what version of R and on what machine?
It works under Windows and under RH7.2 Linux with R 1.6.2.
On Wed, 22 Jan 2003 gregory.benmenzer at gazdefrance.com wrote:
> hello,
> 
> I work with the POSIXlt class and when i write ISOdatetime(1970,1,1,0,0,0),
> R returns NA
> 
> > ISOdatetime(1970,1,1,0,0,0)
> [1] NA
-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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Oxford OX1 3TG, UK                Fax:  +44 1865 272595