[R] Convert week value to date

[Duncan Mackay]

Hi Michael

I am not sure of your decimal format of the week but if you can 
convert it to a calendar day of the year by multiplying by 7
then you could you could use eg if 321 was the calendar day

  strptime(paste(2010, 321,sep=" "),format="%Y %j")
[1] "2010-11-17"

Regards

Duncan


Duncan Mackay
Department of Agronomy and Soil Science
University of New England
ARMIDALE NSW 2351
Email: home mackay at northnet.com.au



At 06:52 18/08/2011, you wrote:
>Hello all,
>I'm hoping to convert a decimal value for week of the year back to a 
>date object.
>Eg:
>strptime(paste(2010,1:52,sep=" "),format="%Y %W")
>
>I expected (hoped?) this would give me the date for Monday of each 
>week.  Instead, it's giving me 52 values of today's date.
>
>Where am I erring?
>Thanks
>Michael
>
>_______________________________________________________
>Michael Folkes
>Salmon Stock Assessment
>Canadian Dept. of Fisheries & Oceans
>Pacific Biological Station
>3190 Hammond Bay Rd.
>Nanaimo, B.C., Canada
>V9T-6N7
>Ph (250) 756-7264 Fax (250) 756-7053  Michael.Folkes at dfo-mpo.gc.ca
>
>
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