[R] RE: aggregating dates

[Prof Brian Ripley]

On Tue, 1 Feb 2005, Paul Sorenson wrote:

> The solution I came up with myself was simply to coerce the integer back 
> to POSIXct:
>
> 	class(ev$date) = "POSIXct"
>
> Can't say it is the right way to do it but it seem to work.

It will work partially.  The correct class is c("POSIXt", "POSIXct").
As I believe others have said,  ISOdate(1970,1,1) + x  is safer.

-- 
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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