Provides a consistent representation of year-based time scales as a numeric vector with an associated 'era'. There are built-in era definitions for many year numbering systems used in contemporary and historic calendars (e.g. Common Era, Islamic 'Hijri' years); year-based time scales used in archaeology, astronomy, geology, and other palaeosciences (e.g. Before Present, SI-prefixed 'annus'); and support for arbitrary user-defined eras. Years can converted from any one era to another using a generalised transformation function. Methods are also provided for robust casting and coercion between years and other numeric types, type-stable arithmetic with years, and pretty-printing in tables.
|Author||Joe Roe [aut, cre] (<https://orcid.org/0000-0002-1011-1244>)|
|Maintainer||Joe Roe <email@example.com>|
|License||MIT + file LICENSE|
|Package repository||View on CRAN|
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