Package index • era

Years with era

Functions for constructing and transforming yr objects, representing years with an associated era.

yr(): Create a vector of years with era

yr_era() yr_set_era() `yr_era<-`(): Get or set the era of a vector of years

yr_transform(): Convert years from one era to another

Era definitions

Functions for defining calendar eras and time scales.

era(): Create an era object

eras(): Standard era definitions

Chronological sorting and extremes

Functions for sorting and calculating the extreme values of yr vectors that take into account the direction of its era.

yr_earliest() yr_latest() yr_range(): Chronological minima and maxima

yr_sort(): Chronological ordering of year vectors

Helper functions

Miscellaneous utility functions for working with yr and era objects.

era(): Create an era object

era_label() era_epoch() era_name() era_unit() era_scale() era_direction(): Get parameters of an era

era_year(): Year units

era_year_label() era_year_days(): Get the parameters of an era_year object.

is_era() validate_era() is_valid_era(): Validation functions for era objects

is_era_year(): Validation functions for era_year objects

is_yr() validate_yr() is_valid_yr(): Validation functions for yr objects

this_year(): Current year