Day-of-the-year (1-366) in R

Asked Mar 18 '15 at 00:48

Active Mar 18 '15 at 01:35

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I have 20 years of pre-1900 y data specified by year month and day in separate columns:

yyyy mm dd y;

I want to extract day-of-the-year (1-366) for each row in R please!

edited Mar 18 '15 at 01:35

alecxe

asked Mar 18 '15 at 00:48

Bill J

Try `as.Date(paste(dat$year,dat$month,dat$day,sep="-"))`, then consider this question: http://stackoverflow.com/questions/15490614/convert-to-the-day-and-time-of-the-year-in-r/15490743 and answers. – thelatemail Mar 18 '15 at 01:09
Thanks. I was avoiding Julian days; the term adds confusion because they are not strictly days of the year (1 to 366).! – Bill J Mar 19 '15 at 03:37

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