On Wed, 14 May 2008, GOUACHE David wrote:
Hello all,
I was wondering if there is a package in which someone would have
created a quantile function that handles vectors of class "Date".
What is the median of today and tomorrow, expressed as a day?
Quantiles of discrete distributions are not unambiguously defined. If you
have an answer to that, quantile(type=1) may help you, e.g.
as.Date(quantile(as.vector(x), type=1), origin="1970-01-01")
0% 25% 50% 75% 100%
"1972-07-01" "1977-01-01" "1983-07-01" "1993-07-01" "2006-01-01"
In advance thanks.
David Gouache
ARVALIS - Institut du végétal
Station de La Minière
78280 Guyancourt
Tel: 01.30.12.96.22 / Port: 06.86.08.94.32
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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