The suggestion below gives you week numbers with week 1 being the week
containing the first monday of the year and weeks going from monday to
sunday. There are other conventions. The ISO convention is that week 1
is the first week containing at least 4 days in the new year (week 1
of 2012 starts on 2nd januari; week 1 of 2008 starts on december 29th
2008).
http://www.r-bloggers.com/iso-week/
gives a function for that type of week numbers (not tested by me).
Jan
Patrick Breheny <patrick.breh...@uky.edu> schreef:
To give a little more detail, you can convert your character strings
into POSIX objects, then extract from it virtually anything you
would want using strftime. In particular, %W is how you get the
week number:
dateRange <- c("2008-10-01","2008-12-01")
x <- as.POSIXlt(dateRange)
strftime(x,format="%W")
[1] "39" "48"
--Patrick
On 02/22/2012 08:37 AM, Ingmar Visser wrote:
?strptime is a good place to start
hth, Ingmar
On Wed, Feb 22, 2012 at 2:09 PM, arunkumar1111<akpbond...@gmail.com> wrote:
Hi
My data looks like this
startDate="2008-06-01"
dateRange =c( "2008-10-01","2008-12-01")
Is there any method to find the week number from the startDate range
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