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Returns the quarter and year in which a date occurs.
Quarter(date)
A numeric vector identifying the quarter that each element of
date corresponds to, expressed as a number of years since 1900. Thus Q1-2000 is 100.00, and Q3-2007 is 107.50.
date
A vector convertible to POSIXlt. A Date or character is fine.
POSIXlt
Date
character
Steven L. Scott steve.the.bayesian@gmail.com
Quarter(c("2008-02-29", "2008-04-29")) # [1] 108.00 108.25
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