[R] sort dates

[Robert Baer]

>How is it possible to sort dates in R?

Try this:
>a = sample(as.Date(1:100, origin = '2012-01-01'),15)
>a
[1] "2012-01-31" "2012-01-22" "2012-03-18" "2012-03-05" "2012-03-17"
[6] "2012-03-08" "2012-01-08" "2012-01-20" "2012-03-01" "2012-03-21"
[11] "2012-02-17" "2012-01-17" "2012-02-12" "2012-02-28" "2012-04-01"
>sort(a)
[1] "2012-01-08" "2012-01-17" "2012-01-20" "2012-01-22" "2012-01-31"
[6] "2012-02-12" "2012-02-17" "2012-02-28" "2012-03-01" "2012-03-05"
[11] "2012-03-08" "2012-03-17" "2012-03-18" "2012-03-21" "2012-04-01"


>Cheers,
>Carol

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------------------------------------------
Robert W. Baer, Ph.D.
Professor of Physiology
Kirksville College of Osteopathic Medicine
A. T. Still University of Health Sciences
800 W. Jefferson St.
Kirksville, MO 63501
660-626-2322
FAX 660-626-2965