as_epiweek              Coerce to a epiweek object
as_isoweek              Coerce to a isoweek object
as_month                Coerce an object to month
as_period               Coerce an object to period
as_year                 Coerce an object to year-quarter
as_yearmonth            Coerce an object to year-month
as_yearquarter          Coerce an object to year-quarter
as_yearweek             Coerce to a yearweek object
boundaries              Access the start (end) dates of a grates vector
epiweek                 Constructor for epiweek objects
grouped_date_accessors
                        Accessors for grate objects
isoweek                 Constructor for isoweek objects
new_epiweek             Minimal constructor for an epiweek object
new_isoweek             Minimal constructor for an isoweek object
new_month               Minimal Constructor for a month object
new_period              Minimal constructor for a period object
new_yearmonth           Minimal constructor for a yearmonth object
new_yearquarter         Minimal constructor for a yearquarter object
new_yearweek            Minimal constructor for a yearweek object
print.grates_month      Print a month object
print.grates_period     Print a period object
print.grates_year       Print a year-quarter object
print.grates_yearmonth
                        Print a year-month object
print.grates_yearquarter
                        Print a year-quarter object
scale_x_grates_epiweek
                        epiweek scale
scale_x_grates_isoweek
                        isoweek scale
scale_x_grates_month    month scale
scale_x_grates_period   period scale
scale_x_grates_year     year scale
scale_x_grates_yearmonth
                        yearmonth scale
scale_x_grates_yearquarter
                        yearquarter scale
scale_x_grates_yearweek
                        yearweek scale
year                    Construct a year object
yearmonth               Constructor for yearmonth objects
yearquarter             Constructor for yearquarter objects
yearweek                Constructor for yearweek objects
