{ "_id": "6a54b340ff0138dec5d66c7d", "Package": "era", "Type": "Package", "Title": "Year-Based Time Scales", "Version": "0.5.0.9000", "Authors@R": "person(\"Joe\", \"Roe\", email = \"joe@joeroe.io\",\nrole = c(\"aut\", \"cre\"), comment = c(ORCID = \"0000-0002-1011-1244\"))", "Description": "Provides a consistent representation of year-based time\nscales as a numeric vector with an associated 'era'. There are\nbuilt-in era definitions for many year numbering systems used\nin contemporary and historic calendars (e.g. Common Era,\nIslamic 'Hijri' years); year-based time scales used in\narchaeology, astronomy, geology, and other palaeosciences (e.g.\nBefore Present, SI-prefixed 'annus'); and support for arbitrary\nuser-defined eras. Years can converted from any one era to\nanother using a generalised transformation function. Methods\nare also provided for robust casting and coercion between years\nand other numeric types, type-stable arithmetic with years, and\npretty-printing in tables.", "Language": "en-GB", "License": "MIT + file LICENSE", "URL": "https://era.joeroe.io, https://github.com/joeroe/era", "BugReports": "https://github.com/joeroe/era/issues", "Encoding": "UTF-8", "Roxygen": "list(markdown = TRUE)", "RoxygenNote": "7.3.2", "VignetteBuilder": "knitr", "Config/testthat/edition": "3", "Repository": "https://joeroe.r-universe.dev", "Date/Publication": "2026-01-14 10:30:01 UTC", "RemoteUrl": "https://github.com/joeroe/era", "RemoteRef": "HEAD", "RemoteSha": "f3014b45a8f12e991cf42102d1426379178dc21b", "NeedsCompilation": "no", "Packaged": { "Date": "2026-07-13 09:40:30 UTC", "User": "root" }, "Author": "Joe Roe [aut, cre] (ORCID: )", "Maintainer": "Joe Roe ", "_user": "joeroe", "_type": "src", "_file": "era_0.5.0.9000.tar.gz", "_fileid": "https://r2.ropensci.org/c5c40909679b5a8d75fde8db4ef8943426363ecfd43a3aaa40f2ef47f5a1a8d0", "_filesize": 177852, "_sha256": "c5c40909679b5a8d75fde8db4ef8943426363ecfd43a3aaa40f2ef47f5a1a8d0", "_expires": "2026-10-21T09:43:26.000Z", "_created": "2026-07-13T09:40:30.000Z", "_published": "2026-07-13T09:43:27.932Z", "_jobs": [ { "job": 86783519664, "time": 142, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "8275052008" }, { "job": 86783519727, "time": 139, "config": "linux-release-x86_64", "r": "4.6.1", "check": "OK", "artifact": "8275051122" }, { "job": 86783519699, "time": 88, "config": "macos-oldrel-arm64", "r": "4.5.3", "check": "OK", "artifact": "8275030981" }, { "job": 86783519671, "time": 134, "config": "macos-release-arm64", "r": "4.6.1", "check": "OK", "artifact": "8275049086" }, { "job": 86782881188, "time": 193, "config": "source", "r": "4.6.1", "check": "OK", "artifact": "8274993009" }, { "job": 86783519718, "time": 112, "config": "wasm-release", "r": "4.6.0", "check": "OK", "artifact": "8275040280" }, { "job": 86783519977, "time": 101, "config": "windows-devel", "r": "4.7.0", "check": "OK", "artifact": "8275036416" }, { "job": 86783519945, "time": 78, "config": "windows-oldrel", "r": "4.5.3", "check": "OK", "artifact": "8275026585" }, { "job": 86783519864, "time": 91, "config": "windows-release", "r": "4.6.1", "check": "OK", "artifact": "8275031626" } ], "_host": "GitHub-Actions", "_buildurl": "https://github.com/r-universe/joeroe/actions/runs/29239791828", "_status": "success", "_upstream": "https://github.com/joeroe/era", "_commit": { "id": "f3014b45a8f12e991cf42102d1426379178dc21b", "author": "Joe Roe ", "committer": "Joe Roe ", "message": "Generate CITATION.cff, closes #49\n", "time": 1768386601 }, "_maintainer": { "name": "Joe Roe", "email": "joe@joeroe.io", "login": "joeroe", "mastodon": "@joeroe@archaeo.social", "orcid": "0000-0002-1011-1244", "description": "Computational archaeologist and research software engineer. Currently working on @xronos-ch and @archaeo-social.", "uuid": 6751089 }, "_distro": "resolute", "_registered": true, "_dependencies": [ { "package": "R", "version": ">= 2.10", "role": "Depends" }, { "package": "vctrs", "version": ">= 0.3.0", "role": "Imports" }, { "package": "methods", "role": "Imports" }, { "package": "rlang", "role": "Imports" }, { "package": "pillar", "role": "Imports" }, { "package": "tibble", "role": "Suggests" }, { "package": "testthat", "role": "Suggests" }, { "package": "covr", "role": "Suggests" }, { "package": "knitr", "role": "Suggests" }, { "package": "rmarkdown", "role": "Suggests" }, { "package": "dplyr", "role": "Suggests" }, { "package": "spelling", "role": "Suggests" }, { "package": "purrr", "role": "Suggests" }, { "package": "tidyr", "role": "Suggests" }, { "package": "lubridate", "role": "Suggests" } ], "_owner": "joeroe", "_selfowned": true, "_usedby": 0, "_updates": [ { "week": "2026-03", "n": 2 } ], "_tags": [], "_topics": [ "archaeology", "geology", "paleoclimate", "paleontology", "vctrs" ], "_stars": 15, "_contributors": [ { "user": "joeroe", "count": 162, "uuid": 6751089 } ], "_userbio": { "uuid": 6751089, "type": "user", "name": "Joe Roe", "followers": 143, "description": "Computational archaeologist and research software engineer. Currently working on @xronos-ch and @archaeo-social." }, "_downloads": { "count": 615, "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/era" }, "_devurl": "https://github.com/joeroe/era", "_pkgdown": "https://era.joeroe.io", "_searchresults": 8, "_rbuild": "4.6.1", "_assets": [ "extra/citation.cff", "extra/citation.html", "extra/citation.json", "extra/citation.txt", "extra/contents.json", "extra/era.html", "extra/NEWS.html", "extra/NEWS.txt", "extra/readme.html", "extra/readme.md", "LICENSE", "manual.pdf" ], "_homeurl": "https://github.com/joeroe/era", "_realowner": "joeroe", "_cranurl": true, "_releases": [ { "version": "0.3.1", "date": "2021-01-29" }, { "version": "0.4.0", "date": "2022-03-09" }, { "version": "0.4.1", "date": "2022-11-17" }, { "version": "0.5.0", "date": "2024-11-20" } ], "_exports": [ "era", "era_direction", "era_epoch", "era_label", "era_name", "era_scale", "era_unit", "era_year", "era_year_days", "era_year_label", "eras", "is_era", "is_era_year", "is_valid_era", "is_valid_yr", "is_yr", "this_year", "validate_era", "validate_yr", "yr", "yr_earliest", "yr_era", "yr_era<-", "yr_latest", "yr_range", "yr_set_era", "yr_sort", "yr_transform" ], "_help": [ { "page": "era", "title": "Create an era object", "concept": [ "era definition functions", "era helper functions" ], "topics": [ "era" ] }, { "page": "era_parameters", "title": "Get parameters of an era", "concept": [ "era helper functions" ], "topics": [ "era_direction", "era_epoch", "era_label", "era_name", "era_parameters", "era_scale", "era_unit" ] }, { "page": "era_year", "title": "Year units", "concept": [ "era helper functions" ], "topics": [ "era_year" ] }, { "page": "era_year_parameters", "title": "Get the parameters of an 'era_year' object.", "concept": [ "era helper functions" ], "topics": [ "era_year_days", "era_year_label", "era_year_parameters" ] }, { "page": "eras", "title": "Standard era definitions", "concept": [ "era definition functions" ], "topics": [ "eras" ] }, { "page": "is_era", "title": "Validation functions for 'era' objects", "concept": [ "era helper functions" ], "topics": [ "is_era", "is_valid_era", "validate_era" ] }, { "page": "is_era_year", "title": "Validation functions for 'era_year' objects", "concept": [ "era helper functions" ], "topics": [ "is_era_year" ] }, { "page": "is_yr", "title": "Validation functions for 'yr' objects", "concept": [ "era helper functions" ], "topics": [ "is_valid_yr", "is_yr", "validate_yr" ] }, { "page": "this_year", "title": "Current year", "concept": [ "era helper functions" ], "topics": [ "this_year" ] }, { "page": "yr", "title": "Create a vector of years with era", "concept": [ "years with era functions" ], "topics": [ "yr" ] }, { "page": "yr_era", "title": "Get or set the era of a vector of years", "concept": [ "years with era functions" ], "topics": [ "yr_era", "yr_era<-", "yr_set_era" ] }, { "page": "yr_extremes", "title": "Chronological minima and maxima", "concept": [ "functions for chronological ordering and extremes" ], "topics": [ "yr_earliest", "yr_extremes", "yr_latest", "yr_range" ] }, { "page": "yr_sort", "title": "Chronological ordering of year vectors", "concept": [ "functions for chronological ordering and extremes" ], "topics": [ "yr_sort" ] }, { "page": "yr_transform", "title": "Convert years from one era to another", "concept": [ "years with era functions" ], "topics": [ "yr_transform" ] } ], "_pkglogo": "https://github.com/joeroe/era/raw/HEAD/man/figures/logo.svg", "_readme": "https://github.com/joeroe/era/raw/HEAD/README.md", "_rundeps": [ "cli", "glue", "lifecycle", "pillar", "rlang", "utf8", "vctrs" ], "_vignettes": [ { "source": "era.Rmd", "filename": "era.html", "title": "Years with an era", "engine": "knitr::rmarkdown", "headings": [ "Years with an era", "Era definitions", "List of built-in eras", "Defining other eras", "Converting between eras: yr_transform()", "Transformation precision", "Invalid transformations", "Arithmetic with year 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