era: Years with an Era

Provides a consistent vector representation of years with an associated calendar era or time scale. It includes built-in definitions of many contemporary and historic calendars; time scales commonly used in archaeology, astronomy, geology, and other palaeosciences (e.g. Before Present, SI-prefixed 'annus'); and support for arbitrary user-defined eras. Functions for converting between eras and for type-stable arithmetic with years are also provided.

Version: 0.3.1
Depends: R (≥ 2.10)
Imports: vctrs (≥ 0.3.0), methods, rlang, magrittr, pillar
Suggests: tibble, testthat, covr, knitr, rmarkdown, dplyr, spelling, purrr, tidyr
Published: 2021-01-29
Author: Joe Roe ORCID iD [aut, cre]
Maintainer: Joe Roe <joe at>
License: MIT + file LICENSE
NeedsCompilation: no
Language: en-GB
Materials: README NEWS
CRAN checks: era results


Reference manual: era.pdf
Vignettes: Years with an era


Package source: era_0.3.1.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): era_0.3.1.tgz, r-release (x86_64): era_0.3.1.tgz, r-oldrel: era_0.3.1.tgz


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