{
  "_id": "6a13f25bacfb0bcc41d31952",
  "Package": "mefa4",
  "Type": "Package",
  "Title": "Multivariate Data Handling with S4 Classes and Sparse Matrices",
  "Version": "0.3-12",
  "Date": "2025-07-12",
  "Authors@R": "c(person(given = \"Peter\",\nfamily = \"Solymos\",\ncomment = c(ORCID = \"0000-0001-7337-1740\"),\nrole = c(\"aut\", \"cre\"),\nemail = \"psolymos@gmail.com\"))",
  "Maintainer": "Peter Solymos <psolymos@gmail.com>",
  "Description": "An S4 update of the 'mefa' package using sparse matrices\nfor enhanced efficiency. Sparse array-like objects are\nsupported via lists of sparse matrices.",
  "License": "GPL-2",
  "URL": "https://github.com/psolymos/mefa4",
  "BugReports": "https://github.com/psolymos/mefa4/issues",
  "LazyLoad": "yes",
  "LazyData": "true",
  "Repository": "https://psolymos.r-universe.dev",
  "Date/Publication": "2026-04-25 16:01:46 UTC",
  "RemoteUrl": "https://github.com/psolymos/mefa4",
  "RemoteRef": "HEAD",
  "RemoteSha": "9afc81b262077dd2de153215091be7f3dc4462e5",
  "NeedsCompilation": "no",
  "Packaged": {
    "Date": "2026-05-25 06:52:38 UTC",
    "User": "root"
  },
  "Author": "Peter Solymos [aut, cre] (ORCID:\n<https://orcid.org/0000-0001-7337-1740>)",
  "MD5sum": "cac3ddd11262195c96016513011e658a",
  "_user": "psolymos",
  "_type": "src",
  "_file": "mefa4_0.3-12.tar.gz",
  "_fileid": "65f9c82e47fbae279caeeaaae2af326f1f585fe310f935b55bbfe8f8e170f607",
  "_filesize": 485307,
  "_sha256": "65f9c82e47fbae279caeeaaae2af326f1f585fe310f935b55bbfe8f8e170f607",
  "_created": "2026-05-25T06:52:38.000Z",
  "_published": "2026-05-25T06:55:23.253Z",
  "_distro": "noble",
  "_jobs": [
    {
      "job": 77669624460,
      "time": 115,
      "config": "linux-devel-x86_64",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "7193206058"
    },
    {
      "job": 77669624445,
      "time": 105,
      "config": "linux-release-x86_64",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7193203513"
    },
    {
      "job": 77669624444,
      "time": 93,
      "config": "macos-oldrel-arm64",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "7193201166"
    },
    {
      "job": 77669624449,
      "time": 120,
      "config": "macos-release-arm64",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7193207412"
    },
    {
      "job": 77669344833,
      "time": 150,
      "config": "source",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7193180160"
    },
    {
      "job": 77669624428,
      "time": 82,
      "config": "wasm-release",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7193198559"
    },
    {
      "job": 77669624457,
      "time": 103,
      "config": "windows-devel",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "7193203511"
    },
    {
      "job": 77669624438,
      "time": 125,
      "config": "windows-oldrel",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "7193207993"
    },
    {
      "job": 77669624542,
      "time": 92,
      "config": "windows-release",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7193200922"
    }
  ],
  "_buildurl": "https://github.com/r-universe/psolymos/actions/runs/26387516014",
  "_status": "success",
  "_host": "GitHub-Actions",
  "_upstream": "https://github.com/psolymos/mefa4",
  "_commit": {
    "id": "9afc81b262077dd2de153215091be7f3dc4462e5",
    "author": "Peter Solymos <psolymos@gmail.com>",
    "committer": "GitHub <noreply@github.com>",
    "message": "Update navbar structure in _pkgdown.yml\n\nRemoved Twitter from navbar and updated GitHub link.",
    "time": 1777132906
  },
  "_maintainer": {
    "name": "Peter Solymos",
    "email": "psolymos@gmail.com",
    "login": "psolymos",
    "linkedin": "in/peter-solymos",
    "twitter": "@psolymos",
    "description": "Tech-bio-nerd",
    "uuid": 831636,
    "orcid": "0000-0001-7337-1740"
  },
  "_registered": true,
  "_dependencies": [
    {
      "package": "R",
      "version": ">= 3.2.0",
      "role": "Depends"
    },
    {
      "package": "methods",
      "role": "Depends"
    },
    {
      "package": "Matrix",
      "version": ">= 1.4-2",
      "role": "Depends"
    },
    {
      "package": "mefa",
      "role": "Suggests"
    }
  ],
  "_owner": "psolymos",
  "_selfowned": true,
  "_usedby": 2,
  "_updates": [
    {
      "week": "2025-28",
      "n": 2
    },
    {
      "week": "2026-17",
      "n": 1
    }
  ],
  "_tags": [],
  "_topics": [
    "data-manipulation",
    "ecology",
    "sparse-matrices"
  ],
  "_stars": 0,
  "_contributors": [
    {
      "user": "psolymos",
      "count": 106,
      "uuid": 831636
    }
  ],
  "_userbio": {
    "uuid": 831636,
    "type": "user",
    "name": "Peter Solymos",
    "description": "Tech-bio-nerd"
  },
  "_downloads": {
    "count": 311,
    "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/mefa4"
  },
  "_devurl": "https://github.com/psolymos/mefa4",
  "_searchresults": 432,
  "_rbuild": "4.6.0",
  "_assets": [
    "extra/citation.cff",
    "extra/citation.html",
    "extra/citation.json",
    "extra/citation.txt",
    "extra/contents.json",
    "extra/mefa4.html",
    "extra/readme.html",
    "extra/readme.md",
    "manual.pdf"
  ],
  "_homeurl": "https://github.com/psolymos/mefa4",
  "_realowner": "psolymos",
  "_cranurl": true,
  "_releases": [
    {
      "version": "0.2-0",
      "date": "2011-02-10"
    },
    {
      "version": "0.2-1",
      "date": "2011-05-15"
    },
    {
      "version": "0.2-2",
      "date": "2011-07-23"
    },
    {
      "version": "0.2-3",
      "date": "2011-08-23"
    },
    {
      "version": "0.2-4",
      "date": "2011-10-17"
    },
    {
      "version": "0.2-6",
      "date": "2012-03-19"
    },
    {
      "version": "0.2-7",
      "date": "2012-05-14"
    },
    {
      "version": "0.2-8",
      "date": "2012-07-07"
    },
    {
      "version": "0.2-9",
      "date": "2013-07-11"
    },
    {
      "version": "0.3-0",
      "date": "2013-10-08"
    },
    {
      "version": "0.3-1",
      "date": "2014-05-16"
    },
    {
      "version": "0.3-2",
      "date": "2015-11-22"
    },
    {
      "version": "0.3-3",
      "date": "2016-03-01"
    },
    {
      "version": "0.3-4",
      "date": "2016-10-14"
    },
    {
      "version": "0.3-5",
      "date": "2018-03-28"
    },
    {
      "version": "0.3-6",
      "date": "2019-06-21"
    },
    {
      "version": "0.3-7",
      "date": "2020-02-28"
    },
    {
      "version": "0.3-8",
      "date": "2021-10-06"
    },
    {
      "version": "0.3-9",
      "date": "2022-09-12"
    },
    {
      "version": "0.3-11",
      "date": "2024-05-20"
    },
    {
      "version": "0.3-12",
      "date": "2025-07-13"
    }
  ],
  "_exports": [
    "%notin%",
    "compare_sets",
    "find_max",
    "find_min",
    "groupMeans",
    "groupSums",
    "mbind",
    "mbind2",
    "Mefa",
    "Melt",
    "nameAlnum",
    "nonDuplicated",
    "normalizeNames",
    "paste0date",
    "pasteDate",
    "r2rmd",
    "reclass",
    "redistribute",
    "samp",
    "samp<-",
    "show",
    "stack",
    "sum_by",
    "taxa",
    "taxa<-",
    "xtab",
    "Xtab",
    "xtab<-"
  ],
  "_datasets": [
    {
      "name": "abmibirds",
      "title": "Raw Dataset of Bird Point Counts",
      "object": "abmibirds",
      "class": [
        "data.frame"
      ],
      "fields": [
        "Rotation",
        "ABMI.Site",
        "Year",
        "Field.Date",
        "Field.Crew.Members",
        "Identification.Date",
        "Identification.Analyst",
        "Point.Count.Station",
        "Wind.Conditions",
        "Precipitation",
        "Start.of.Point.Count",
        "End.of.Point.Count",
        "Common.Name",
        "Scientific.Name",
        "Taxonomic.Resolution",
        "Unique.Taxonomic.Identification.Number",
        "Time.First.Detected",
        "Interval.1",
        "Interval.2",
        "Interval.3",
        "Behaviour"
      ],
      "rows": 59341,
      "table": true,
      "tojson": true
    }
  ],
  "_help": [
    {
      "page": "mefa4-package",
      "title": "Multivariate Data Handling with S4 Classes and Sparse Matrices",
      "topics": [
        "mefa4-package",
        "mefa4"
      ]
    },
    {
      "page": "notin",
      "title": "Negated Value Matching",
      "topics": [
        "%notin%"
      ]
    },
    {
      "page": "abmibirds",
      "title": "Raw Dataset of Bird Point Counts",
      "topics": [
        "abmibirds"
      ]
    },
    {
      "page": "find_max",
      "title": "Utility functions for factors and compositional data",
      "topics": [
        "compare_sets",
        "find_max",
        "find_min",
        "reclass",
        "redistribute"
      ]
    },
    {
      "page": "groupSums",
      "title": "Compute Summary Statistics of Data Subsets",
      "topics": [
        "groupMeans",
        "groupMeans,matrix-method",
        "groupMeans,Mefa-method",
        "groupMeans,sparseMatrix-method",
        "groupSums",
        "groupSums,matrix-method",
        "groupSums,Mefa-method",
        "groupSums,sparseMatrix-method",
        "sum_by"
      ]
    },
    {
      "page": "mbind",
      "title": "Combine R Objects by Rows and Columns",
      "topics": [
        "mbind",
        "mbind,matrix,matrix-method",
        "mbind,Mefa,Mefa-method",
        "mbind,sparseMatrix,sparseMatrix-method",
        "mbind2",
        "mbind2,matrix,matrix-method",
        "mbind2,sparseMatrix,sparseMatrix-method"
      ]
    },
    {
      "page": "Mefa",
      "title": "'Mefa' Class",
      "topics": [
        "dim,Mefa-method",
        "dimnames,Mefa-method",
        "dimnames<-,Mefa,list-method",
        "Mefa",
        "mefa",
        "Mefa-class",
        "mefa-class",
        "MefaDataFrame",
        "MefaDataFrame-class",
        "MefaMatrix",
        "MefaMatrix-class",
        "show,Mefa-method",
        "stack,Mefa-method",
        "stcs",
        "stcs-class",
        "t,Mefa-method"
      ]
    },
    {
      "page": "Melt",
      "title": "Melting Matrices",
      "topics": [
        "Melt"
      ]
    },
    {
      "page": "nameAlnum",
      "title": "Utility functions, mostly for character manipulation",
      "topics": [
        "nameAlnum",
        "normalizeNames",
        "paste0date",
        "pasteDate"
      ]
    },
    {
      "page": "nonDuplicated",
      "title": "Non Duplicated Rows in Data Frame",
      "topics": [
        "nonDuplicated"
      ]
    },
    {
      "page": "r2rmd",
      "title": "Parse R source file and return R markdown",
      "topics": [
        "r2rmd"
      ]
    },
    {
      "page": "samp",
      "title": "Accessing and Replacing Parts of 'Mefa' Objects",
      "topics": [
        "samp",
        "samp,Mefa-method",
        "samp,mefa-method",
        "samp<-",
        "samp<-,Mefa,MefaDataFrame-method",
        "taxa",
        "taxa,Mefa-method",
        "taxa,mefa-method",
        "taxa<-",
        "taxa<-,Mefa,MefaDataFrame-method",
        "xtab",
        "xtab,Mefa-method",
        "xtab,mefa-method",
        "xtab<-",
        "xtab<-,Mefa,MefaMatrix-method",
        "[",
        "[,Mefa,ANY,ANY,ANY-method"
      ]
    },
    {
      "page": "Xtab",
      "title": "Sparse Cross Tabulation",
      "topics": [
        "sparseMatrixList-class",
        "Xtab"
      ]
    }
  ],
  "_readme": "https://github.com/psolymos/mefa4/raw/HEAD/README.md",
  "_rundeps": [
    "lattice",
    "Matrix"
  ],
  "_score": 5.413634997198556,
  "_indexed": true,
  "_nocasepkg": "mefa4",
  "_universes": [
    "psolymos"
  ],
  "_binaries": [
    {
      "r": "4.7.0",
      "os": "linux",
      "version": "0.3-12",
      "date": "2026-05-25T06:54:21.000Z",
      "distro": "noble",
      "commit": "9afc81b262077dd2de153215091be7f3dc4462e5",
      "fileid": "2074ffda5d2252109947c2b405d1a3629b111851f9b6bee5f72c9c0bdad63516",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/psolymos/actions/runs/26387516014"
    },
    {
      "r": "4.6.0",
      "os": "linux",
      "version": "0.3-12",
      "date": "2026-05-25T06:54:07.000Z",
      "distro": "noble",
      "commit": "9afc81b262077dd2de153215091be7f3dc4462e5",
      "fileid": "845d641d740ec354f3426e1638b0d0d7da9bbc05e3ec72bfd28fcd08ee28e449",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/psolymos/actions/runs/26387516014"
    },
    {
      "r": "4.5.3",
      "os": "mac",
      "version": "0.3-12",
      "date": "2026-05-25T06:54:04.000Z",
      "commit": "9afc81b262077dd2de153215091be7f3dc4462e5",
      "fileid": "ae62e14b985d579765ec4e576a2d8968d20d97c81b0ba38ee5054397a79e418b",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/psolymos/actions/runs/26387516014"
    },
    {
      "r": "4.6.0",
      "os": "mac",
      "version": "0.3-12",
      "date": "2026-05-25T06:54:25.000Z",
      "commit": "9afc81b262077dd2de153215091be7f3dc4462e5",
      "fileid": "9d7584f23d20a61d1cb9cb68b98d26cd05d13d192b6447cb1772f29eae00e219",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/psolymos/actions/runs/26387516014"
    },
    {
      "r": "4.6.0",
      "os": "wasm",
      "version": "0.3-12",
      "date": "2026-05-25T06:54:17.000Z",
      "commit": "9afc81b262077dd2de153215091be7f3dc4462e5",
      "fileid": "72e0bb6c81d75edd21d1c8816be77c1caaabf10ed235cd24eae1772c391b25ca",
      "status": "success",
      "buildurl": "https://github.com/r-universe/psolymos/actions/runs/26387516014"
    },
    {
      "r": "4.7.0",
      "os": "win",
      "version": "0.3-12",
      "date": "2026-05-25T06:53:55.000Z",
      "commit": "9afc81b262077dd2de153215091be7f3dc4462e5",
      "fileid": "065deaec3689681a2f760f8aca9e07f17bbedaaa1c6fb4fa1114cc5efb57aa55",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/psolymos/actions/runs/26387516014"
    },
    {
      "r": "4.5.3",
      "os": "win",
      "version": "0.3-12",
      "date": "2026-05-25T06:54:07.000Z",
      "commit": "9afc81b262077dd2de153215091be7f3dc4462e5",
      "fileid": "72a1e60b64076992139d85b10139eda6824547d0f535c6f1ad40bbba79decd59",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/psolymos/actions/runs/26387516014"
    },
    {
      "r": "4.6.0",
      "os": "win",
      "version": "0.3-12",
      "date": "2026-05-25T06:53:47.000Z",
      "commit": "9afc81b262077dd2de153215091be7f3dc4462e5",
      "fileid": "666dfc89df295de6504548c5cf322655ad2c5e14f0b25213ce3c8beb5ffc56c9",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/psolymos/actions/runs/26387516014"
    }
  ]
}