{
  "_id": "6acb8a25fe5cc25786e91726",
  "Package": "nipals",
  "Title": "Principal Components Analysis using NIPALS or Weighted EMPCA,\nwith Gram-Schmidt Orthogonalization",
  "Version": "1.2",
  "Authors@R": "person(\"Kevin\", \"Wright\", , \"kw.stat@gmail.com\", role = c(\"aut\", \"cre\", \"cph\"),\ncomment = c(ORCID = \"0000-0002-0617-8673\"))",
  "Description": "Principal Components Analysis of a matrix using Non-linear\nIterative Partial Least Squares or weighted Expectation\nMaximization PCA with Gram-Schmidt orthogonalization of the\nscores and loadings. Optimized for speed. See Andrecut (2009)\n<doi:10.1089/cmb.2008.0221>.",
  "License": "MIT + file LICENSE",
  "URL": "https://kwstat.github.io/nipals/",
  "BugReports": "https://github.com/kwstat/nipals/issues",
  "VignetteBuilder": "knitr",
  "Encoding": "UTF-8",
  "LazyData": "true",
  "Config/roxygen2/version": "8.1.0",
  "Repository": "https://kwstat.r-universe.dev",
  "Date/Publication": "2026-09-09 13:53:31 UTC",
  "RemoteUrl": "https://github.com/kwstat/nipals",
  "RemoteRef": "HEAD",
  "RemoteSha": "d251049c60b020e01be1b6e8909bc7a548f3c99b",
  "NeedsCompilation": "no",
  "Packaged": {
    "Date": "2026-10-11 13:04:59 UTC",
    "User": "root"
  },
  "Author": "Kevin Wright [aut, cre, cph] (ORCID:\n<https://orcid.org/0000-0002-0617-8673>)",
  "Maintainer": "Kevin Wright <kw.stat@gmail.com>",
  "_user": "kwstat",
  "_type": "src",
  "_file": "nipals_1.2.tar.gz",
  "_fileid": "https://r2.ropensci.org/ca6bc5a142454f40a1af8094ee7d14881367c6eade7a679fc37713b58478b9ac",
  "_filesize": 241113,
  "_sha256": "ca6bc5a142454f40a1af8094ee7d14881367c6eade7a679fc37713b58478b9ac",
  "_expires": "2027-01-19T13:07:47.000Z",
  "_created": "2026-10-11T13:04:59.000Z",
  "_published": "2026-10-11T13:07:49.422Z",
  "_buildurl": "https://github.com/r-universe/kwstat/actions/runs/38141592785",
  "_status": "success",
  "_host": "GitHub-Actions",
  "_jobs": [
    {
      "job": 114476946929,
      "time": 132,
      "config": "linux-devel-x86_64",
      "r": "4.7.0",
      "check": "NOTE",
      "artifact": "11703297182"
    },
    {
      "job": 114476946921,
      "time": 112,
      "config": "linux-release-x86_64",
      "r": "4.6.1",
      "check": "NOTE",
      "artifact": "11702539373"
    },
    {
      "job": 114476946942,
      "time": 93,
      "config": "macos-oldrel-arm64",
      "r": "4.5.3",
      "check": "NOTE",
      "artifact": "11703486675"
    },
    {
      "job": 114476946902,
      "time": 79,
      "config": "macos-release-arm64",
      "r": "4.6.1",
      "check": "NOTE",
      "artifact": "11702502865"
    },
    {
      "job": 114476450149,
      "time": 152,
      "config": "source",
      "r": "4.6.1",
      "check": "OK",
      "artifact": "11703481625"
    },
    {
      "job": 114476946834,
      "time": 80,
      "config": "wasm-release",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "11703163510"
    },
    {
      "job": 114476946923,
      "time": 70,
      "config": "windows-devel-x86_64",
      "r": "4.7.0",
      "check": "NOTE",
      "artifact": "11703268315"
    },
    {
      "job": 114476946941,
      "time": 66,
      "config": "windows-oldrel-x86_64",
      "r": "4.5.3",
      "check": "NOTE",
      "artifact": "11702853826"
    },
    {
      "job": 114476946984,
      "time": 65,
      "config": "windows-release-x86_64",
      "r": "4.6.1",
      "check": "NOTE",
      "artifact": "11702574153"
    }
  ],
  "_upstream": "https://github.com/kwstat/nipals",
  "_commit": {
    "id": "d251049c60b020e01be1b6e8909bc7a548f3c99b",
    "author": "Kevin Wright <kw.stat@gmail.com>",
    "committer": "Kevin Wright <kw.stat@gmail.com>",
    "message": "fix revdep error in powerPCA\n",
    "time": 1788962011
  },
  "_maintainer": {
    "name": "Kevin Wright",
    "email": "kw.stat@gmail.com",
    "login": "kwstat",
    "description": "Statistician",
    "uuid": 484260,
    "orcid": "0000-0002-0617-8673"
  },
  "_distro": "resolute",
  "_registered": true,
  "_dependencies": [
    {
      "package": "R",
      "version": ">= 3.4.0",
      "role": "Depends"
    },
    {
      "package": "knitr",
      "role": "Suggests"
    },
    {
      "package": "rmarkdown",
      "role": "Suggests"
    },
    {
      "package": "testthat",
      "role": "Suggests"
    }
  ],
  "_owner": "kwstat",
  "_selfowned": true,
  "_usedby": 6,
  "_updates": [
    {
      "week": "2026-24",
      "n": 1
    },
    {
      "week": "2026-36",
      "n": 1
    },
    {
      "week": "2026-37",
      "n": 1
    }
  ],
  "_tags": [],
  "_stars": 7,
  "_contributors": [
    {
      "user": "kwstat",
      "count": 40,
      "uuid": 484260
    },
    {
      "user": "stanstrup",
      "count": 1,
      "uuid": 4532682
    }
  ],
  "_userbio": {
    "uuid": 484260,
    "type": "user",
    "name": "Kevin Wright",
    "followers": 102,
    "description": "Statistician"
  },
  "_downloads": {
    "count": 2018,
    "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/nipals"
  },
  "_devurl": "https://github.com/kwstat/nipals",
  "_pkgdown": "https://kwstat.github.io/nipals/",
  "_searchresults": 56,
  "_rbuild": "4.6.1",
  "_assets": [
    "extra/citation.cff",
    "extra/citation.html",
    "extra/citation.json",
    "extra/citation.txt",
    "extra/contents.json",
    "extra/manual.pdf",
    "extra/NEWS.html",
    "extra/NEWS.txt",
    "extra/nipals.html",
    "extra/readme.html",
    "extra/readme.md",
    "LICENSE"
  ],
  "_homeurl": "https://github.com/kwstat/nipals",
  "_realowner": "kwstat",
  "_cranurl": true,
  "_releases": [
    {
      "version": "0.3",
      "date": "2017-11-14"
    },
    {
      "version": "0.4",
      "date": "2018-02-11"
    },
    {
      "version": "0.5",
      "date": "2018-10-24"
    },
    {
      "version": "0.7",
      "date": "2020-01-24"
    },
    {
      "version": "0.8",
      "date": "2021-09-15"
    },
    {
      "version": "1.0",
      "date": "2024-12-02"
    },
    {
      "version": "1.2",
      "date": "2026-09-09"
    }
  ],
  "_exports": [
    "avg_angular_distance",
    "empca",
    "nipals"
  ],
  "_datasets": [
    {
      "name": "uscrime",
      "title": "U.S. Crime rates per 100,00 people",
      "object": "uscrime",
      "class": [
        "data.frame"
      ],
      "fields": [
        "state",
        "murder",
        "rape",
        "robbery",
        "assault",
        "burglary",
        "larceny",
        "autotheft"
      ],
      "rows": 50,
      "table": true,
      "tojson": true
    }
  ],
  "_help": [
    {
      "page": "avg_angular_distance",
      "title": "Average angular distance between two rotation matrices",
      "topics": [
        "avg_angular_distance"
      ]
    },
    {
      "page": "empca",
      "title": "Principal component analysis by weighted EMPCA, expectation maximization principal component-analysis",
      "topics": [
        "empca"
      ]
    },
    {
      "page": "nipals",
      "title": "Principal component analysis by NIPALS, non-linear iterative partial least squares",
      "topics": [
        "nipals"
      ]
    },
    {
      "page": "uscrime",
      "title": "U.S. Crime rates per 100,00 people",
      "topics": [
        "uscrime"
      ]
    }
  ],
  "_pkglogo": "https://github.com/kwstat/nipals/raw/HEAD/man/figures/logo.png",
  "_readme": "https://github.com/kwstat/nipals/raw/HEAD/README.md",
  "_rundeps": [],
  "_vignettes": [
    {
      "source": "nipals_comparisons.Rmd",
      "filename": "nipals_comparisons.html",
      "title": "Comparing results and performance of NIPALS functions in R",
      "author": "Kevin Wright",
      "engine": "knitr::rmarkdown",
      "headings": [
        "Example data",
        "ade4",
        "plsdepot",
        "mixOmics",
        "Speed comparison"
      ],
      "created": "2017-10-30 19:08:35",
      "modified": "2024-12-02 21:09:38",
      "commits": 14
    },
    {
      "source": "empca_notes.Rmd",
      "filename": "empca_notes.html",
      "title": "EMPCA notes",
      "author": "Kevin Wright",
      "engine": "knitr::rmarkdown",
      "headings": [
        "Complete data example",
        "Missing data example",
        "Python",
        "Matlab"
      ],
      "created": "2020-01-20 02:35:27",
      "modified": "2024-12-02 21:09:38",
      "commits": 3
    },
    {
      "source": "nipals_algorithm.Rmd",
      "filename": "nipals_algorithm.html",
      "title": "The NIPALS algorithm",
      "author": "Kevin Wright",
      "engine": "knitr::rmarkdown",
      "headings": [
        "Singular value decomposition",
        "NIPALS",
        "Missing data",
        "Gram-Schmidt orthogonalization",
        "Example 1",
        "Bibliography"
      ],
      "created": "2017-10-31 16:28:32",
      "modified": "2024-12-02 21:09:38",
      "commits": 7
    },
    {
      "source": "nipals_optimization.Rmd",
      "filename": "nipals_optimization.html",
      "title": "NIPALS optimization notes",
      "author": "Kevin Wright",
      "engine": "knitr::rmarkdown",
      "headings": [
        "Abstract",
        "General computational performance tips",
        "Calculating scores t = Xp/p'p",
        "Version 1",
        "Version 2",
        "Version 3",
        "Version 4",
        "Comments",
        "Calculating PP' and TT'",
        "R vs C comment"
      ],
      "created": "2017-10-31 16:28:32",
      "modified": "2024-01-26 19:38:44",
      "commits": 9
    }
  ],
  "_score": 7.931630984408299,
  "_indexed": true,
  "_nocasepkg": "nipals",
  "_universes": [
    "kwstat"
  ],
  "_binaries": [
    {
      "r": "4.7.0",
      "os": "linux",
      "version": "1.2",
      "date": "2026-10-11T13:07:15.000Z",
      "distro": "resolute",
      "commit": "d251049c60b020e01be1b6e8909bc7a548f3c99b",
      "fileid": "https://r2.ropensci.org/83a933eb9ea2bc409a772bf115973c7251c996863110d435e267516e85cfc015",
      "status": "success",
      "check": "NOTE",
      "buildurl": "https://github.com/r-universe/kwstat/actions/runs/38141592785"
    },
    {
      "r": "4.6.1",
      "os": "linux",
      "version": "1.2",
      "date": "2026-10-11T13:06:57.000Z",
      "distro": "resolute",
      "commit": "d251049c60b020e01be1b6e8909bc7a548f3c99b",
      "fileid": "https://r2.ropensci.org/d69c3059c056fcfd26bc79c00b4842e16b379337143c45fb6d3bff589ffdf1dc",
      "status": "success",
      "check": "NOTE",
      "buildurl": "https://github.com/r-universe/kwstat/actions/runs/38141592785"
    },
    {
      "r": "4.5.3",
      "os": "mac",
      "version": "1.2",
      "date": "2026-10-11T13:06:43.000Z",
      "commit": "d251049c60b020e01be1b6e8909bc7a548f3c99b",
      "fileid": "https://r2.ropensci.org/3dbb726363801bb6106a52fefcc81ae45388a97f1732d0301b3bcfb0fdbf52d7",
      "status": "success",
      "check": "NOTE",
      "buildurl": "https://github.com/r-universe/kwstat/actions/runs/38141592785"
    },
    {
      "r": "4.6.1",
      "os": "mac",
      "version": "1.2",
      "date": "2026-10-11T13:06:31.000Z",
      "commit": "d251049c60b020e01be1b6e8909bc7a548f3c99b",
      "fileid": "https://r2.ropensci.org/f307ef5c94460e984198ce4a4677153f07895177197b68d1f3c0523817c7487c",
      "status": "success",
      "check": "NOTE",
      "buildurl": "https://github.com/r-universe/kwstat/actions/runs/38141592785"
    },
    {
      "r": "4.6.0",
      "os": "wasm",
      "version": "1.2",
      "date": "2026-10-11T13:06:37.000Z",
      "commit": "d251049c60b020e01be1b6e8909bc7a548f3c99b",
      "fileid": "https://r2.ropensci.org/a167c473b231365f3aac6229dd4c78f4e0b01ec41b663470b0c5ca2f133de78c",
      "status": "success",
      "buildurl": "https://github.com/r-universe/kwstat/actions/runs/38141592785"
    },
    {
      "r": "4.7.0",
      "os": "win",
      "version": "1.2",
      "date": "2026-10-11T13:06:07.000Z",
      "commit": "d251049c60b020e01be1b6e8909bc7a548f3c99b",
      "fileid": "https://r2.ropensci.org/1d72c1fb7698a0b7612f01b360ce39c49c245a2e08fc2157e9c2b0a713bbea56",
      "status": "success",
      "check": "NOTE",
      "buildurl": "https://github.com/r-universe/kwstat/actions/runs/38141592785"
    },
    {
      "r": "4.5.3",
      "os": "win",
      "version": "1.2",
      "date": "2026-10-11T13:06:05.000Z",
      "commit": "d251049c60b020e01be1b6e8909bc7a548f3c99b",
      "fileid": "https://r2.ropensci.org/cdf67ce3968cb78d7ac749384bf9cb4ee0159570acdb7f4c3d35707ecfff9e8b",
      "status": "success",
      "check": "NOTE",
      "buildurl": "https://github.com/r-universe/kwstat/actions/runs/38141592785"
    },
    {
      "r": "4.6.1",
      "os": "win",
      "version": "1.2",
      "date": "2026-10-11T13:06:06.000Z",
      "commit": "d251049c60b020e01be1b6e8909bc7a548f3c99b",
      "fileid": "https://r2.ropensci.org/8f1c6a3a080ed34cbf9afefff399aeb80977890e3c3606bf7468f825926c32f6",
      "status": "success",
      "check": "NOTE",
      "buildurl": "https://github.com/r-universe/kwstat/actions/runs/38141592785"
    }
  ]
}