[R] transforming year.weeknumber into dates

Dimitri Liakhovitski dimitri.liakhovitski at gmail.com
Fri Jul 15 19:54:12 CEST 2011


I know how to transform dates into year.weeknumber format using zoo:

as.numeric(format(as.Date("2010-10-02"), "%Y.%W"))

But is there a straightforward way to do the opposite - to transform
character strings like "2009.12" or "2009.30" back into dates
(assuming that weeks start on Monday)?
Thanks a lot!

Dimitri Liakhovitski

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