On Jan 15, 2009, at 2:28 PM, Carlos Hernandez wrote:
dear All,
i'm trying to calculate the number of Mondays, Tuesdays, etc that
each month within a date range has. I have time series data that
spans 60 months and i want to calculate the number of Mondays,
Tuesdays, Wed, etc of each month. (I want to control for weekly
seasonality but my data is monthly).
Is there an easy way to to this in R? or is there a package i could
use? i did some quick search in the help files and R sites but could
not find any answers.
The chron package has a wide assortment of functions of that sort.
Looks like Mondays would be 1
> day.of.week(1,15,2009) # a Thursday
[1] 4
> day.of.week(1,18,2009) #Saturday
[1] 0
> day.of.week(1,17,2009) #Sunday
[1] 6
--
David Winsemius
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