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

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