{
  "_id": "6a129710acfb0bcc41d0c903",
  "Package": "GCubeR",
  "Title": "Estimation of Forest Volume, Biomass, and Carbon",
  "Version": "0.1.3",
  "Authors@R": "c(\nperson(\"Juliette\", \"Defontaine\", role = c(\"aut\")),\nperson(\"David\", \"Linchant\", email =\"david.linchant@gmail.com\", role = c(\"aut\", \"cre\")),\nperson(\"Samuel\", \"Douin\", role = c(\"aut\")),\nperson(\"Timon\", \"Luizi\", role = c(\"aut\")),\nperson(\"Pierre\", \"Bosman\", role = c(\"aut\"))\n)",
  "Description": "Provides tools for estimating forest metrics such as stem\nvolume, biomass, and carbon using regional allometric\nequations. The package implements widely used models including\nDagnelie P., Rondeux J. & Palm R. (2013, ISBN:9782870161258)\n\"Cubage des arbres et des peuplements forestiers - Tables et\nequations\" <https://orbi.uliege.be/handle/2268/155356>, Vallet\nP., Dhote J.-F., Le Moguedec G., Ravart M. & Pignard G. (2006)\n\"Development of total aboveground volume equations for seven\nimportant forest tree species in France\"\n<doi:10.1016/j.foreco.2006.03.013>, Pauwels D. & Rondeux J.\n(1999, ISSN:07779992) \"Tarifs de cubage pour les petits bois de\nmeleze (Larix sp.) en Ardenne\"\n<https://orbi.uliege.be/handle/2268/96128>, Massenet J.-Y.\n(2006) \"Chapitre IV: Estimation du volume\"\n<https://jymassenet-foret.fr/cours/dendrometrie/Coursdendrometriepdf/Dendro4-2009.pdf>,\nFrance Valley (2025) \"Bilan Carbone Forestier - Methodologie\"\n<https://www.france-valley.com/hubfs/Bilan%20Carbone%20Forestier.pdf>.\nIts modular structure allows transparent integration of\nbibliographic or user-defined allometric relationships.",
  "License": "MIT + file LICENSE",
  "Encoding": "UTF-8",
  "RoxygenNote": "7.3.3",
  "LazyData": "true",
  "VignetteBuilder": "knitr",
  "Config/testthat/edition": "3",
  "NeedsCompilation": "no",
  "Packaged": {
    "Date": "2026-05-24 06:09:40 UTC",
    "User": "root"
  },
  "Author": "Juliette Defontaine [aut], David Linchant [aut, cre], Samuel\nDouin [aut], Timon Luizi [aut], Pierre Bosman [aut]",
  "Maintainer": "David Linchant <david.linchant@gmail.com>",
  "Config/pak/sysreqs": "libicu-dev libx11-dev",
  "Repository": "https://dlinchant.r-universe.dev",
  "Date/Publication": "2026-01-21 19:00:15 UTC",
  "RemoteUrl": "https://github.com/cran/GCubeR",
  "RemoteRef": "HEAD",
  "RemoteSha": "a73454770ab244174ccf1dd20e60fb80f7ec8d72",
  "MD5sum": "7f1251c6ea9742954d000319009e4d9f",
  "_user": "dlinchant",
  "_type": "src",
  "_file": "GCubeR_0.1.3.tar.gz",
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  "_filesize": 5181933,
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  "_created": "2026-05-24T06:09:40.000Z",
  "_published": "2026-05-24T06:13:36.776Z",
  "_distro": "noble",
  "_jobs": [
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  "_buildurl": "https://github.com/r-universe/dlinchant/actions/runs/26353619136",
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  "_host": "GitHub-Actions",
  "_upstream": "https://github.com/cran/GCubeR",
  "_commit": {
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    "author": "David Linchant <david.linchant@gmail.com>",
    "committer": "cran-robot <csardi.gabor+cran@gmail.com>",
    "message": "version 0.1.3\n",
    "time": 1769022015
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  "_maintainer": {
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    "email": "david.linchant@gmail.com",
    "login": "dlinchant",
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    "uuid": 145339358
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  "_registered": true,
  "_dependencies": [
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      "role": "Imports"
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    {
      "package": "ggplot2",
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  "_owner": "cran",
  "_selfowned": true,
  "_usedby": 0,
  "_updates": [
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      "n": 1
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  ],
  "_tags": [
    {
      "name": "0.1.3",
      "date": "2026-01-21"
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  ],
  "_stars": 0,
  "_contributors": [
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  ],
  "_userbio": {
    "uuid": 145339358,
    "type": "user",
    "name": "Dlinchant"
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  "_downloads": {
    "count": 205,
    "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/GCubeR"
  },
  "_searchresults": 3,
  "_rbuild": "4.6.0",
  "_assets": [
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    "extra/citation.html",
    "extra/citation.json",
    "extra/citation.txt",
    "extra/contents.json",
    "extra/GCubeR.html",
    "manual.pdf"
  ],
  "_realowner": "dlinchant",
  "_cranurl": false,
  "_releases": [
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      "version": "0.1.3",
      "date": "2026-01-21"
    }
  ],
  "_exports": [
    "add_c130_dbh",
    "algan_vta_vc22",
    "biomass_calc",
    "bouvard_vta",
    "c150_c130",
    "dagnelie_br",
    "dagnelie_vc22_1",
    "dagnelie_vc22_1g",
    "dagnelie_vc22_2",
    "export_output",
    "GCubeR",
    "plot_by_class",
    "rondeux_vc22_vtot",
    "vallet_vc22",
    "vallet_vta"
  ],
  "_datasets": [
    {
      "name": "c150_c130_coeff",
      "title": "Coefficients for circumference conversion (1.50 m <-> 1.30 m)",
      "object": "c150_c130_coeff",
      "class": [
        "data.frame"
      ],
      "fields": [
        "species_code",
        "coeff_a",
        "coeff_b",
        "min_c150",
        "max_c150"
      ],
      "rows": 44,
      "table": true,
      "tojson": true
    },
    {
      "name": "dan1",
      "title": "Dagnelie coefficients (tarif 1)",
      "object": "dan1",
      "class": [
        "data.frame"
      ],
      "fields": [
        "species_code",
        "coeff_a",
        "coeff_b",
        "coeff_c",
        "coeff_d",
        "min_c130",
        "max_c130"
      ],
      "rows": 47,
      "table": true,
      "tojson": true
    },
    {
      "name": "dan1g",
      "title": "Dagnelie coefficients (tarif 1g)",
      "object": "dan1g",
      "class": [
        "data.frame"
      ],
      "fields": [
        "species_code",
        "coeff_a",
        "coeff_b",
        "coeff_c",
        "coeff_d",
        "coeff_e",
        "coeff_f",
        "min_c130",
        "max_c130",
        "min_hdom",
        "max_hdom"
      ],
      "rows": 47,
      "table": true,
      "tojson": true
    },
    {
      "name": "dan2",
      "title": "Dagnelie coefficients (tarif 2)",
      "object": "dan2",
      "class": [
        "data.frame"
      ],
      "fields": [
        "species_code",
        "coeff_a",
        "coeff_b",
        "coeff_c",
        "coeff_d",
        "coeff_e",
        "coeff_f",
        "min_c130",
        "max_c130",
        "min_htot",
        "max_htot"
      ],
      "rows": 47,
      "table": true,
      "tojson": true
    },
    {
      "name": "danbr",
      "title": "Dagnelie branch coefficients (tarif \"br\")",
      "object": "danbr",
      "class": [
        "data.frame"
      ],
      "fields": [
        "species_code",
        "coeff_a",
        "coeff_b",
        "coeff_c",
        "coeff_d",
        "min_c130",
        "max_c130"
      ],
      "rows": 39,
      "table": true,
      "tojson": true
    },
    {
      "name": "density_table",
      "title": "Wood density table for biomass calculation",
      "object": "density_table",
      "class": [
        "data.frame"
      ],
      "fields": [
        "species_code",
        "con_broad",
        "density"
      ],
      "rows": 52,
      "table": true,
      "tojson": true
    },
    {
      "name": "equations_GCubeR",
      "title": "Equations metadata for GCubeR",
      "object": "equations_GCubeR",
      "class": [
        "data.frame"
      ],
      "fields": [
        "eq_id",
        "method",
        "predicted_variable",
        "output_unit",
        "species_id",
        "species_name_fr",
        "species_code",
        "validity_region",
        "input_variable",
        "input_unit",
        "formula_type",
        "explicit_formula",
        "coeff_a",
        "coeff_b",
        "coeff_c",
        "coeff_d",
        "coeff_e",
        "coeff_f",
        "validity_range",
        "remarks",
        "reference_source"
      ],
      "rows": 264,
      "table": true,
      "tojson": true
    },
    {
      "name": "val_vc22",
      "title": "Vallet coefficients for merchantable volume (vc22)",
      "object": "val_vc22",
      "class": [
        "data.frame"
      ],
      "fields": [
        "species_code",
        "coeff_a",
        "coeff_b",
        "coeff_c"
      ],
      "rows": 12,
      "table": true,
      "tojson": true
    },
    {
      "name": "val_vta",
      "title": "Vallet coefficients for total aboveground volume (VTA)",
      "object": "val_vta",
      "class": [
        "data.frame"
      ],
      "fields": [
        "species_code",
        "coeff_a",
        "coeff_b",
        "coeff_c",
        "coeff_d"
      ],
      "rows": 7,
      "table": true,
      "tojson": true
    }
  ],
  "_help": [
    {
      "page": "add_c130_dbh",
      "title": "Add or compute c130 and dbh columns",
      "topics": [
        "add_c130_dbh"
      ]
    },
    {
      "page": "algan_vta_vc22",
      "title": "Volume Estimation Using the Algan Method",
      "topics": [
        "algan_vta_vc22"
      ]
    },
    {
      "page": "biomass_calc",
      "title": "Total Biomass, Carbon and CO2 Estimation for Tree Species",
      "topics": [
        "biomass_calc"
      ]
    },
    {
      "page": "bouvard_vta",
      "title": "Volume Estimation Using the Bouvard Method",
      "topics": [
        "bouvard_vta"
      ]
    },
    {
      "page": "c150_c130",
      "title": "Convert circumference between 1.50 m and 1.30 m",
      "topics": [
        "c150_c130"
      ]
    },
    {
      "page": "c150_c130_coeff",
      "title": "Coefficients for circumference conversion (1.50 m <-> 1.30 m)",
      "topics": [
        "c150_c130_coeff"
      ]
    },
    {
      "page": "dagnelie_br",
      "title": "Single-entry Dagnelie branch volume (tarif \"br\")",
      "topics": [
        "dagnelie_br"
      ]
    },
    {
      "page": "dagnelie_vc22_1",
      "title": "Single-entry Dagnelie volume (tarif 1)",
      "topics": [
        "dagnelie_vc22_1"
      ]
    },
    {
      "page": "dagnelie_vc22_1g",
      "title": "Graduated single-entry Dagnelie volume (tarif 1g)",
      "topics": [
        "dagnelie_vc22_1g"
      ]
    },
    {
      "page": "dagnelie_vc22_2",
      "title": "Two-entry Dagnelie volume (tarif 2)",
      "topics": [
        "dagnelie_vc22_2"
      ]
    },
    {
      "page": "dan1",
      "title": "Dagnelie coefficients (tarif 1)",
      "topics": [
        "dan1"
      ]
    },
    {
      "page": "dan1g",
      "title": "Dagnelie coefficients (tarif 1g)",
      "topics": [
        "dan1g"
      ]
    },
    {
      "page": "dan2",
      "title": "Dagnelie coefficients (tarif 2)",
      "topics": [
        "dan2"
      ]
    },
    {
      "page": "danbr",
      "title": "Dagnelie branch coefficients (tarif \"br\")",
      "topics": [
        "danbr"
      ]
    },
    {
      "page": "density_table",
      "title": "Wood density table for biomass calculation",
      "topics": [
        "density_table"
      ]
    },
    {
      "page": "equations_GCubeR",
      "title": "Equations metadata for GCubeR",
      "topics": [
        "equations_GCubeR"
      ]
    },
    {
      "page": "export_output",
      "title": "Export data frame to CSV with warnings instead of errors",
      "topics": [
        "export_output"
      ]
    },
    {
      "page": "GCubeR",
      "title": "GCubeR main workflow",
      "topics": [
        "GCubeR"
      ]
    },
    {
      "page": "plot_by_class",
      "title": "Summarise and plot standing volume by c130 class and species",
      "topics": [
        "plot_by_class"
      ]
    },
    {
      "page": "rondeux_vc22_vtot",
      "title": "Calculate Total and Commercial Stem Volume (Rondeux, larch)",
      "topics": [
        "rondeux_vc22_vtot"
      ]
    },
    {
      "page": "val_vc22",
      "title": "Vallet coefficients for merchantable volume (vc22)",
      "topics": [
        "val_vc22"
      ]
    },
    {
      "page": "val_vta",
      "title": "Vallet coefficients for total aboveground volume (VTA)",
      "topics": [
        "val_vta"
      ]
    },
    {
      "page": "vallet_vc22",
      "title": "Calculate Commercial Volume (vc22) up to 7cm Diameter at Breast Height (dbh)",
      "topics": [
        "vallet_vc22"
      ]
    },
    {
      "page": "vallet_vta",
      "title": "Calculate Total Aboveground Volume (VTA) Vallet Method",
      "topics": [
        "vallet_vta"
      ]
    }
  ],
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    "bit",
    "bit64",
    "cli",
    "clipr",
    "cpp11",
    "crayon",
    "dplyr",
    "farver",
    "generics",
    "ggplot2",
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    {
      "source": "introduction.Rmd",
      "filename": "introduction.html",
      "title": "Introduction to GCubeR",
      "engine": "knitr::rmarkdown",
      "headings": [
        "Welcome to GCubeR",
        "Global structure of GCubeR",
        "User input",
        "Converting module",
        "VTA module",
        "Rondeux 2 entry method - rondeux_vc22_vtot()",
        "Required column:",
        "Available for :",
        "Formula:",
        "Example :",
        "Results :",
        "Bouvard method — bouvard_vta()",
        "Required columns:",
        "Available for species_code :",
        "Formula :",
        "Algan method — algan_vta_vc22()",
        "VTA :",
        "VC22 :",
        "Vallet method — vallet_vta()",
        "Available for the following species:",
        "Form coeficcient term 1:",
        "[\\text",
        "Form coeficcient term 2:",
        "[\\text",
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        "vta:",
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        "Dagnelie's equation",
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        "Vallet 2 entry method - vallet_vc22()",
        "Required column :",
        "Biomass/carbon/CO(_2) storage module",
        "Biomass/carbon/CO(_2)calculator :biomass_calc()",
        "1. CNPF method",
        "Required columns :",
        "Stem biomass (wood + bark)",
        "Branch biomass",
        "Total above-ground biomass",
        "Carbon contained in the biomass",
        "Conversion carbon → CO(_2)",
        "2. Vallet method",
        "Result:",
        "Data exportation functionality",
        "ouput usage",
        "Plot and output module - plot_by_class()"
      ],
      "created": "2026-01-21 19:00:15",
      "modified": "2026-01-21 19:00:15",
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    {
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      "headings": [],
      "created": "2026-01-21 19:00:15",
      "modified": "2026-01-21 19:00:15",
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