{
  "_id": "6a495acff6c47c441949e4ad",
  "Package": "lotri",
  "Title": "A Simple Way to Specify Symmetric, Block Diagonal Matrices",
  "Version": "1.0.5",
  "Authors@R": "c(person(\"Matthew L.\", \"Fidler\", , \"matthew.fidler@gmail.com\", role = c(\"aut\", \"cre\"),\ncomment = c(ORCID = \"0000-0001-8538-6691\")),\nperson(\ngiven = \"Mauricio\",\nfamily = \"Vargas Sepulveda\",\nrole = \"ctb\",\nemail = \"m.vargas.sepulveda@gmail.com\",\ncomment = c(ORCID = \"0000-0003-1017-7574\")),\nperson(\"Bill\", \"Denney\", email=\"wdenney@humanpredictions.com\", role=\"ctb\", comment=c(ORCID=\"0000-0002-5759-428X\")))",
  "Maintainer": "Matthew L. Fidler <matthew.fidler@gmail.com>",
  "Description": "Provides a simple mechanism to specify a symmetric block\ndiagonal matrices (often used for covariance matrices).  This\nis based on the domain specific language implemented in\n'nlmixr2' but expanded to create matrices in R generally\ninstead of specifying parts of matrices to estimate. It has\nexpanded to include some matrix manipulation functions that are\ngenerally useful for 'rxode2' and 'nlmixr2'.",
  "License": "GPL (>=2)",
  "URL": "https://nlmixr2.github.io/lotri/, https://github.com/nlmixr2/lotri",
  "BugReports": "https://github.com/nlmixr2/lotri/issues",
  "VignetteBuilder": "knitr",
  "Biarch": "true",
  "Config/testthat/edition": "3",
  "Encoding": "UTF-8",
  "NeedsCompilation": "yes",
  "Language": "en-US",
  "Config/roxygen2/version": "8.0.0",
  "Repository": "https://nlmixr2.r-universe.dev",
  "Date/Publication": "2026-05-20 19:24:44 UTC",
  "RemoteUrl": "https://github.com/nlmixr2/lotri",
  "RemoteRef": "HEAD",
  "RemoteSha": "9466a49b56e9fad2013c0c00c0af516dd70b2ea7",
  "Packaged": {
    "Date": "2026-06-24 02:27:49 UTC",
    "User": "root"
  },
  "Author": "Matthew L. Fidler [aut, cre] (ORCID:\n<https://orcid.org/0000-0001-8538-6691>),\nMauricio Vargas Sepulveda [ctb] (ORCID:\n<https://orcid.org/0000-0003-1017-7574>),\nBill Denney [ctb] (ORCID: <https://orcid.org/0000-0002-5759-428X>)",
  "_user": "nlmixr2",
  "_type": "src",
  "_file": "lotri_1.0.5.tar.gz",
  "_fileid": "https://r2.ropensci.org/d834d3f4566446186f542f8d346d37f33b04c0bac9f31dabe28c20fa79418c06",
  "_filesize": 426443,
  "_sha256": "d834d3f4566446186f542f8d346d37f33b04c0bac9f31dabe28c20fa79418c06",
  "_expires": "2026-10-12T19:11:09.000Z",
  "_created": "2026-06-24T02:27:49.000Z",
  "_published": "2026-07-04T19:11:11.109Z",
  "_jobs": [
    {
      "job": 85159375622,
      "time": 153,
      "config": "linux-devel-arm64",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "7838682770"
    },
    {
      "job": 85159375554,
      "time": 144,
      "config": "linux-devel-x86_64",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "7838680430"
    },
    {
      "job": 85159375825,
      "time": 141,
      "config": "linux-release-arm64",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7838680324"
    },
    {
      "job": 85159375588,
      "time": 138,
      "config": "linux-release-x86_64",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7838679517"
    },
    {
      "job": 85159375876,
      "time": 108,
      "config": "macos-oldrel-arm64",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "7838672830"
    },
    {
      "job": 85159375604,
      "time": 239,
      "config": "macos-oldrel-x86_64",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "7838700747"
    },
    {
      "job": 85159375583,
      "time": 98,
      "config": "macos-release-arm64",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7838670947"
    },
    {
      "job": 85159375606,
      "time": 190,
      "config": "macos-release-x86_64",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7838690183"
    },
    {
      "job": 85159375389,
      "time": 211,
      "config": "source",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7838650901"
    },
    {
      "job": 85159375732,
      "time": 114,
      "config": "wasm-release",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7838674241"
    },
    {
      "job": 85159375613,
      "time": 120,
      "config": "windows-devel",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "7838675250"
    },
    {
      "job": 85159375593,
      "time": 111,
      "config": "windows-oldrel",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "7838673655"
    },
    {
      "job": 85159375639,
      "time": 105,
      "config": "windows-release",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7838672483"
    }
  ],
  "_host": "GitHub-Actions",
  "_buildurl": "https://github.com/r-universe/nlmixr2/actions/runs/28070835344",
  "_status": "success",
  "_upstream": "https://github.com/nlmixr2/lotri",
  "_commit": {
    "id": "9466a49b56e9fad2013c0c00c0af516dd70b2ea7",
    "author": "mattfidler <matthew.fidler@gmail.com>",
    "committer": "mattfidler <matthew.fidler@gmail.com>",
    "message": "version bump\n",
    "time": 1779305084
  },
  "_maintainer": {
    "name": "Matthew L. Fidler",
    "email": "matthew.fidler@gmail.com",
    "login": "mattfidler",
    "description": "Also a Novartis employee;  Can reach me at my Novartis email: matt.fidler@novartis.com",
    "uuid": 514778,
    "orcid": "0000-0001-8538-6691"
  },
  "_distro": "resolute",
  "_registered": true,
  "_dependencies": [
    {
      "package": "R",
      "version": ">= 3.4.0",
      "role": "Depends"
    },
    {
      "package": "cpp4r",
      "role": "LinkingTo"
    },
    {
      "package": "armadillo4r",
      "role": "LinkingTo"
    },
    {
      "package": "checkmate",
      "role": "Imports"
    },
    {
      "package": "crayon",
      "role": "Imports"
    },
    {
      "package": "methods",
      "role": "Imports"
    },
    {
      "package": "stats",
      "role": "Imports"
    },
    {
      "package": "utils",
      "role": "Imports"
    },
    {
      "package": "ggplot2",
      "role": "Suggests"
    },
    {
      "package": "knitr",
      "role": "Suggests"
    },
    {
      "package": "Matrix",
      "role": "Suggests"
    },
    {
      "package": "microbenchmark",
      "role": "Suggests"
    },
    {
      "package": "rmarkdown",
      "role": "Suggests"
    },
    {
      "package": "testthat",
      "role": "Suggests"
    },
    {
      "package": "memuse",
      "role": "Suggests"
    }
  ],
  "_owner": "nlmixr2",
  "_selfowned": true,
  "_usedby": 20,
  "_updates": [
    {
      "week": "2025-29",
      "n": 5
    },
    {
      "week": "2025-34",
      "n": 1
    },
    {
      "week": "2025-35",
      "n": 1
    },
    {
      "week": "2026-04",
      "n": 2
    },
    {
      "week": "2026-11",
      "n": 1
    },
    {
      "week": "2026-14",
      "n": 1
    },
    {
      "week": "2026-20",
      "n": 18
    },
    {
      "week": "2026-21",
      "n": 2
    }
  ],
  "_tags": [
    {
      "name": "v1.0.1",
      "date": "2025-07-17"
    },
    {
      "name": "v1.0.2",
      "date": "2025-08-29"
    },
    {
      "name": "v1.0.3",
      "date": "2026-03-11"
    },
    {
      "name": "v1.0.4",
      "date": "2026-05-13"
    }
  ],
  "_stars": 7,
  "_contributors": [
    {
      "user": "mattfidler",
      "count": 388,
      "uuid": 514778
    },
    {
      "user": "billdenney",
      "count": 11,
      "uuid": 10359931
    },
    {
      "user": "pachadotdev",
      "count": 2,
      "uuid": 10091065
    },
    {
      "user": "copilot",
      "count": 1,
      "uuid": 198982749
    },
    {
      "user": "olivroy",
      "count": 1,
      "uuid": 52606734
    }
  ],
  "_userbio": {
    "uuid": 94710774,
    "type": "organization",
    "name": "nlmixr2",
    "followers": 54
  },
  "_downloads": {
    "count": 3158,
    "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/lotri"
  },
  "_devurl": "https://github.com/nlmixr2/lotri",
  "_pkgdown": "https://nlmixr2.github.io/lotri/",
  "_searchresults": 37,
  "_topics": [
    "openblas",
    "cpp",
    "openmp"
  ],
  "_rbuild": "4.6.0",
  "_assets": [
    "extra/citation.cff",
    "extra/citation.html",
    "extra/citation.json",
    "extra/citation.txt",
    "extra/contents.json",
    "extra/lotri.html",
    "extra/NEWS.html",
    "extra/NEWS.txt",
    "extra/readme.html",
    "extra/readme.md",
    "manual.pdf"
  ],
  "_homeurl": "https://github.com/nlmixr2/lotri",
  "_realowner": "nlmixr2",
  "_cranurl": true,
  "_releases": [
    {
      "version": "0.1.1",
      "date": "2019-05-14"
    },
    {
      "version": "0.2.1",
      "date": "2020-02-12"
    },
    {
      "version": "0.2.2",
      "date": "2020-05-29"
    },
    {
      "version": "0.3.1",
      "date": "2021-01-05"
    },
    {
      "version": "0.4.0",
      "date": "2022-04-15"
    },
    {
      "version": "0.4.1",
      "date": "2022-04-21"
    },
    {
      "version": "0.4.2",
      "date": "2022-06-18"
    },
    {
      "version": "0.4.3",
      "date": "2023-03-20"
    },
    {
      "version": "1.0.0",
      "date": "2024-09-18"
    },
    {
      "version": "1.0.1",
      "date": "2025-07-18"
    },
    {
      "version": "1.0.2",
      "date": "2025-08-29"
    },
    {
      "version": "1.0.3",
      "date": "2026-03-11"
    },
    {
      "version": "1.0.4",
      "date": "2026-05-14"
    }
  ],
  "_exports": [
    ".lotriPointers",
    "as.lotri",
    "lotri",
    "lotriAsExpression",
    "lotriDataFrameToLotriExpression",
    "lotriEst",
    "lotriIsBlockMat",
    "lotriMat",
    "lotriMatInv",
    "lotriNearPD",
    "lotriSep",
    "rcm"
  ],
  "_help": [
    {
      "page": "as.lotri",
      "title": "As lower triangular matrix",
      "topics": [
        "as.lotri",
        "as.lotri.data.frame",
        "as.lotri.default",
        "as.lotri.matrix"
      ]
    },
    {
      "page": "lotri",
      "title": "Easily Specify block-diagonal matrices with lower triangular info",
      "topics": [
        "lotri"
      ]
    },
    {
      "page": "lotriAsExpression",
      "title": "Change a matrix or lotri matrix to a lotri expression",
      "topics": [
        "lotriAsExpression"
      ]
    },
    {
      "page": "lotriDataFrameToLotriExpression",
      "title": "Convert a lotri data frame to a lotri expression",
      "topics": [
        "lotriDataFrameToLotriExpression"
      ]
    },
    {
      "page": "lotriEst",
      "title": "Extract or remove lotri estimate data frame from lotri object",
      "topics": [
        "lotriEst"
      ]
    },
    {
      "page": "lotriIsBlockMat",
      "title": "Determine if the matrix is a block matrix",
      "topics": [
        "lotriIsBlockMat"
      ]
    },
    {
      "page": "lotriMat",
      "title": "Create a matrix from a list of matrices",
      "topics": [
        "lotriMat"
      ]
    },
    {
      "page": "lotriMatInv",
      "title": "Converts a matrix into a list of block matrices",
      "topics": [
        "lotriMatInv"
      ]
    },
    {
      "page": "lotriNearPD",
      "title": "C++ implementation of Matrix's nearPD",
      "topics": [
        "lotriNearPD"
      ]
    },
    {
      "page": "lotriSep",
      "title": "Separate a lotri matrix into above and below lotri matrices",
      "topics": [
        "lotriSep"
      ]
    },
    {
      "page": "rcm",
      "title": "Use the RCM algorithm to permute to banded matrix",
      "topics": [
        "rcm"
      ]
    }
  ],
  "_pkglogo": "https://github.com/nlmixr2/lotri/raw/HEAD/man/figures/logo.png",
  "_readme": "https://github.com/nlmixr2/lotri/raw/HEAD/README.md",
  "_rundeps": [
    "armadillo4r",
    "backports",
    "checkmate",
    "cpp4r",
    "crayon"
  ],
  "_sysdeps": [
    {
      "shlib": "liblapack",
      "package": "libopenblas0-pthread",
      "source": "openblas",
      "version": "0.3.32+ds-5",
      "name": "openblas",
      "homepage": "https://www.openblas.net/",
      "description": "Optimized BLAS (linear algebra) library (shared lib, pthread)"
    },
    {
      "shlib": "libblas",
      "package": "libopenblas0-pthread",
      "source": "openblas",
      "version": "0.3.32+ds-5",
      "name": "openblas",
      "homepage": "https://www.openblas.net/",
      "description": "Optimized BLAS (linear algebra) library (shared lib, pthread)"
    },
    {
      "shlib": "libstdc++",
      "package": "libstdc++6",
      "source": "gcc",
      "version": "16-20260322-1ubuntu1",
      "name": "c++",
      "homepage": "http://gcc.gnu.org/",
      "description": "GNU Standard C++ Library v3"
    },
    {
      "shlib": "libgomp",
      "package": "libgomp1",
      "source": "gcc",
      "version": "16-20260322-1ubuntu1",
      "name": "openmp",
      "homepage": "http://gcc.gnu.org/",
      "description": "GCC OpenMP (GOMP) support library"
    }
  ],
  "_vignettes": [
    {
      "source": "lotri-motivation.Rmd",
      "filename": "lotri-motivation.html",
      "title": "Lotri Motivation",
      "author": "Matthew Fidler",
      "engine": "knitr::rmarkdown",
      "headings": [
        "Motivation",
        "Creating lists of matrices with attached properties",
        "Combining symmetric named matrices"
      ],
      "created": "2019-05-10 03:04:32",
      "modified": "2022-06-18 01:05:53",
      "commits": 8
    }
  ],
  "_score": 8.894983122793096,
  "_indexed": true,
  "_nocasepkg": "lotri",
  "_universes": [
    "nlmixr2",
    "mattfidler"
  ],
  "_binaries": [
    {
      "r": "4.7.0",
      "os": "linux",
      "version": "1.0.5",
      "date": "2026-06-24T02:30:32.000Z",
      "distro": "resolute",
      "arch": "aarch64",
      "commit": "9466a49b56e9fad2013c0c00c0af516dd70b2ea7",
      "fileid": "https://r2.ropensci.org/694ee6f4ae98ca647a3fd222b769d3569edf787edc68f795f1483c55170856fd",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/nlmixr2/actions/runs/28070835344"
    },
    {
      "r": "4.7.0",
      "os": "linux",
      "version": "1.0.5",
      "date": "2026-06-24T02:30:17.000Z",
      "distro": "resolute",
      "arch": "x86_64",
      "commit": "9466a49b56e9fad2013c0c00c0af516dd70b2ea7",
      "fileid": "https://r2.ropensci.org/203eaf40ad0d9ed4360498e401fb5390fd817800bf9db138eb3d935d90b8c646",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/nlmixr2/actions/runs/28070835344"
    },
    {
      "r": "4.6.0",
      "os": "linux",
      "version": "1.0.5",
      "date": "2026-06-24T02:30:21.000Z",
      "distro": "resolute",
      "arch": "aarch64",
      "commit": "9466a49b56e9fad2013c0c00c0af516dd70b2ea7",
      "fileid": "https://r2.ropensci.org/c3a08948d43def1706a9467808826f4227c1457a78c62de8397cea4a312cb51a",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/nlmixr2/actions/runs/28070835344"
    },
    {
      "r": "4.6.0",
      "os": "linux",
      "version": "1.0.5",
      "date": "2026-06-24T02:30:13.000Z",
      "distro": "resolute",
      "arch": "x86_64",
      "commit": "9466a49b56e9fad2013c0c00c0af516dd70b2ea7",
      "fileid": "https://r2.ropensci.org/053a0e7d049738bc56220bc4f041f25c1e0e8eeac588545c575937b3873177b6",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/nlmixr2/actions/runs/28070835344"
    },
    {
      "r": "4.5.3",
      "os": "mac",
      "version": "1.0.5",
      "date": "2026-06-24T02:29:40.000Z",
      "arch": "aarch64",
      "commit": "9466a49b56e9fad2013c0c00c0af516dd70b2ea7",
      "fileid": "https://r2.ropensci.org/c5c06bf7fb38e5f49690fa0f3bb1f3a81d3a75b551f009591eb3cac250411732",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/nlmixr2/actions/runs/28070835344"
    },
    {
      "r": "4.5.3",
      "os": "mac",
      "version": "1.0.5",
      "date": "2026-06-24T02:31:17.000Z",
      "arch": "x86_64",
      "commit": "9466a49b56e9fad2013c0c00c0af516dd70b2ea7",
      "fileid": "https://r2.ropensci.org/cafd1b7f0378ae6fa3b15f8ebaa73536cca5a1a159bde8136d9ba2ee625e1670",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/nlmixr2/actions/runs/28070835344"
    },
    {
      "r": "4.6.0",
      "os": "mac",
      "version": "1.0.5",
      "date": "2026-06-24T02:29:35.000Z",
      "arch": "aarch64",
      "commit": "9466a49b56e9fad2013c0c00c0af516dd70b2ea7",
      "fileid": "https://r2.ropensci.org/da6e1e1169f289946192ed737bc432098a12fca12816722f23ebec63881560ac",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/nlmixr2/actions/runs/28070835344"
    },
    {
      "r": "4.6.0",
      "os": "mac",
      "version": "1.0.5",
      "date": "2026-06-24T02:30:32.000Z",
      "arch": "x86_64",
      "commit": "9466a49b56e9fad2013c0c00c0af516dd70b2ea7",
      "fileid": "https://r2.ropensci.org/58ad3f65e98c585b4bbb3ae450e29ac34f62f0f1ee13c2f2dd1966aa423af130",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/nlmixr2/actions/runs/28070835344"
    },
    {
      "r": "4.6.0",
      "os": "wasm",
      "version": "1.0.5",
      "date": "2026-06-24T02:30:05.000Z",
      "arch": "emscripten",
      "commit": "9466a49b56e9fad2013c0c00c0af516dd70b2ea7",
      "fileid": "https://r2.ropensci.org/3769502d57cdd61dc5844a72cf296ad67bd91c198080de5382770b7df9e3c370",
      "status": "success",
      "buildurl": "https://github.com/r-universe/nlmixr2/actions/runs/28070835344"
    },
    {
      "r": "4.7.0",
      "os": "win",
      "version": "1.0.5",
      "date": "2026-06-24T02:29:14.000Z",
      "arch": "x86_64",
      "commit": "9466a49b56e9fad2013c0c00c0af516dd70b2ea7",
      "fileid": "https://r2.ropensci.org/9b52dea13fa30067d0d0231eee24386ff06bcf99365977d99ef7fb88a5742d72",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/nlmixr2/actions/runs/28070835344"
    },
    {
      "r": "4.5.3",
      "os": "win",
      "version": "1.0.5",
      "date": "2026-06-24T02:29:13.000Z",
      "arch": "x86_64",
      "commit": "9466a49b56e9fad2013c0c00c0af516dd70b2ea7",
      "fileid": "https://r2.ropensci.org/c7411e807b40022e2be9563cd4f589c9e8b04cb01c00872f1875446c8b52717e",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/nlmixr2/actions/runs/28070835344"
    },
    {
      "r": "4.6.0",
      "os": "win",
      "version": "1.0.5",
      "date": "2026-06-24T02:29:08.000Z",
      "arch": "x86_64",
      "commit": "9466a49b56e9fad2013c0c00c0af516dd70b2ea7",
      "fileid": "https://r2.ropensci.org/864a266cfc11e21cb0fd8fd2abaa7b1de2e623dac681434e0c008d86621a81e9",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/nlmixr2/actions/runs/28070835344"
    }
  ]
}