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mytoday
2005 Jan 17
2
Question about time series
I have data in the following format:
> DATE
[1] "01/13/2004"
In order to find the difference between two data points, I presently
use brute force to calculate the day of the year:
> strptime(DATE, format="%m/%d/%Y")$yday
[1] 12
Although this works, it may not be robust over different years. I
assume that R is sufficiently clever that a much simpler approach