yrfraction {season} | R Documentation |
Calculate the fraction of the year for a date variable (after accounting for leap years) or for month.
yrfraction(date,type='daily')
date |
a date variable if type=‘daily ’, or an
integer between 1 and 12 if type=‘monthly ’. |
type |
‘daily’ for dates, or ‘monthly ’ for months. |
Returns the fraction of the year in the range [0,1).
yrfrac |
Fraction of the year. |
Adrian Barnett a.barnett<at>qut.edu.au
# create fractions for the start, middle and end of the year date<-as.Date(c(0,181,364),origin='1991-01-01') # create fractions based on these dates yrfraction(date) yrfraction(1:12,type='monthly')