yrfraction {season}R Documentation

Fraction of the year

Description

Calculate the fraction of the year for a date variable (after accounting for leap years) or for month.

Usage

yrfraction(date,type='daily')

Arguments

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.

Details

Returns the fraction of the year in the range [0,1).

Value

yrfrac Fraction of the year.

Author(s)

Adrian Barnett a.barnett<at>qut.edu.au

Examples

# 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')

[Package season version 0.2-3 Index]