{
  "title": "Snow Atlas speaker-area geometries",
  "bbox": [
    -25,
    26,
    68,
    72.5
  ],
  "source": "The Glottography Consortium (2026), asher2007world v2.0",
  "sourcePublication": "Asher, R. E. & Christopher J. Moseley (eds.) 2007. Atlas of the World's Languages. 2nd edn. Routledge.",
  "datasetUrl": "https://github.com/Glottography/asher2007world",
  "datasetDoi": "https://doi.org/10.5281/zenodo.18613195",
  "sourceCommit": "5590fcc8870d8883a323ff0defd5a1a6a03e9611",
  "inputUrl": "https://raw.githubusercontent.com/Glottography/asher2007world/5590fcc8870d8883a323ff0defd5a1a6a03e9611/cldf/contemporary/features.geojson",
  "inputSha256": "84af615ffda56da1f5d754f73a6f5db4e42e46bc36dff5245bb2382724b96fa7",
  "license": "CC BY 4.0",
  "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
  "accessed": "2026-10-14",
  "transformations": [
    "Selected contemporary source speaker areas intersecting the map window.",
    "Clipped to [-25,26,68,72.5] longitude/latitude; repaired invalid geometries.",
    "Aggregated by source Glottocode and explicit lexical joins, retaining disjoint polygons.",
    "Simplified at 0.008 degrees with topology preserved within each area; coordinates rounded to four decimals.",
    "Joined North Syrian Dialects (4453) and Central Syrian Dialects (1028) to the selected Syrian Arabic lexical reference, apc.",
    "Joined the atlas Kurdish macrolanguage area kurd1259 (source 3004) to the Northern Kurdish lexical reference kmr; variety distinctions are retained in lexical notes, without inferring internal boundaries.",
    "Added separate Northern Kurdish and Central Kurdish DiACL/TITUS traditional areas (source 98 and 99, reference year 1750), clipped to the poster window, simplified at 0.008 degrees, coordinates rounded to four decimals with validity repair. Original 2007 atlas features remain separate.",
    "Joined existing Turōyō source area turo1239 to tru. Added a La Palma historical island reference using the existing Natural Earth coastline; no new Aramaic speaker boundaries were drawn."
  ],
  "limitations": [
    "Speaker areas reflect an atlas published in 2007, not a current census, majority-language estimate or official boundary.",
    "Polygons overlap: multiple languages can be used in one place. Atlas omissions and unmapped minority languages remain gaps.",
    "Area fill does not assert that all residents speak the language or that the language is absent elsewhere.",
    "Some source areas combine related varieties. No new territory boundaries have been inferred to split them.",
    "Small enclaves present in the source are retained, subject to source resolution and display simplification.",
    "Country borders, if displayed elsewhere, are context and are not used to construct these language areas.",
    "Occitan, Catalan, Cornish, Crimean Tatar, North Sami and Veps include explicitly marked traditional-area supplements. They must not be interpreted as contemporary majority-speaker distributions.",
    "Mesopotamian Arabic has a selected Iraqi cartographic reference fill and label, without a separately asserted speaker-area polygon.",
    "The Kurdish supplements are historical/traditional language areas with reference year 1750, not contemporary prevalence estimates or newly inferred ethnic boundaries.",
    "Maaloula Western Neo-Aramaic, Assyrian Neo-Aramaic and literary Mandaic use reference-point labels; no exclusive modern territory is asserted.",
    "The broad source aggregate normalized as Classical Syriac remains unassigned to modern Assyrian Neo-Aramaic.",
    "Canarian tener? is a disputed La Palma report. The island fill is a historical geographic reference rather than surviving language-area geometry."
  ],
  "featureCount": 181,
  "lexicalJoinCount": 90,
  "supplements": [
    {
      "id": "glottography-carling2025diacl",
      "citation": "Carling, Gerd & Jost Gippert (eds.) 2025. DiACL/TITUS Polygon Archive. Frankfurt am Main: Goethe University.",
      "url": "https://github.com/Glottography/carling2025diacl",
      "primaryUrl": "https://diacl.uni-frankfurt.de/GeographicalPresence/Index",
      "derivedDatasetDoi": "https://doi.org/10.5281/zenodo.18614010",
      "derivedVersion": "v2.0",
      "commit": "7a8588553d69799de95efe1787a3fc87d03aa1f2",
      "license": "CC BY 4.0",
      "inputSha256": "ca973888a535ab42ed5f64cdc1a69b4887346a075fdc1e9e890bd4fb2dc7d316",
      "features": [
        "cat",
        "ckb",
        "cor",
        "crh",
        "kmr",
        "oci"
      ],
      "epoch": "Traditional linguistic area; reference year 1750. Source timeframes usually 1750-2000."
    },
    {
      "id": "glottography-rantanen2021uralic",
      "citation": "Rantanen, T., Vesakoski, O., Ylikoski, J., & Tolvanen, H. (2021). Geographical database of the Uralic languages (v1.0). Zenodo.",
      "url": "https://github.com/Glottography/rantanen2021uralic",
      "doi": "https://doi.org/10.5281/zenodo.4784188",
      "derivedDatasetDoi": "https://doi.org/10.5281/zenodo.18643660",
      "derivedVersion": "v2.0",
      "methodPaper": "https://doi.org/10.1371/journal.pone.0269648",
      "commit": "bac771be7f659544458217e2a32b4f8256b5832b",
      "license": "CC BY 4.0",
      "inputSha256": "b760140ff7056a156965d01b37cbb18417cab5be97845a2612d43329ddb6b28e",
      "features": [
        "sme",
        "vep"
      ],
      "epoch": "Traditional distribution, approximately the widest known at the beginning of the 20th century."
    }
  ],
  "lexiconWithoutTerritory": [
    "acm",
    "aii",
    "amw",
    "arg",
    "ast",
    "csb",
    "dsb",
    "glg",
    "glv",
    "hsb",
    "kal",
    "kir",
    "myz",
    "scn",
    "sco",
    "vec"
  ]
}