Get Dates of a Certain Weekday from a Year in R

Question

How might I generate a list of date objects (POSIXct or lt) for each Monday of a year?

For instance this year would be (In Year, Month, Day):

2012_01_02,
         


        

Answer 1

as.Date("2012_01_02", format="%Y_%m_%d") +seq(0,366,by=7)  # 2012 is a leap year.

If you really want them as DateTimes with all the attendant hassles of timezones then you can coerce them with as.POSIXct.