Displaying 2 results from an estimated 2 matches for "prevmonday".
2011 Sep 02
2
previous monday date
...to return the date (in form '%Y-%m-%d') of the Monday
previous to the current date. For example: since it is 2011-09-02 today, I
would expect 2011-08-29 to be the return value.
I found the following in:
http://www.mail-archive.com/r-help@r-project.org/msg144184.html
Start quote from link:
prevmonday <- function(x) 7 * floor(as.numeric(x-1+4) / 7) + as.Date(1-4)
For example,
> prevmonday(Sys.Date())
[1] "2011-08-15"
> prevmonday(prevmonday(Sys.Date()))
[1] "2011-08-15"
End quote from link.
But when I do it I get:
> prevmonday <- function(x) 7 * floor(as.nu...
2011 Aug 17
3
Convert week value to date
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
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