Definition of "meridian"

NOTE: Markdown does not support highlighting in color, so bold/italic has been used to highlight the material being discussed. This issue is extracted from the document submitted by Roger Lott at https://github.com/opengeospatial/CRS-JSON-Encoding/blob/main/ProjJson%20v0-7%20RL%202024-06-16.docx for discussion at the CRS SWG meeting OGC held during the Montreal June 2024 TC meeting.

"meridian": {

"description": "Supplementary attribute for an axis direction in a polar aspect azimuthal projection. Not to be confused with prime_meridian.",

  "type": "object",
  "properties": {
    "$schema" : { "type": "string" },
    "type": { "type": "string", "enum": ["Meridian"] },
    "longitude": { "$ref": "#/definitions/value_in_degree_or_value_and_unit" },
    "id": { "$ref": "#/definitions/id" },
    "ids": { "$ref": "#/definitions/ids" }
  },
  "required" : [ "longitude" ],
  "allOf": [
    { "$ref": "#/definitions/id_ids_mutually_exclusive" }
  ],
  "additionalProperties": false
},

KR: Addition of description to avoid confusion with "prime_meridain"

Start with the proposed "meridian" definition in the issue and the linked ProjJson v0-7 RL 2024-06-16.docx document. Check where this schema definition is maintained in the repository, then confirm the description distinguishes meridian from prime_meridian and preserves the stated longitude requirement and properties.