Element Description
The Coordinate reference system identifier of the grid. Use EPSG-4326 for simple geographic grids.
Best Practices
The Coordinate Reference System ID should be a grid type that best describes the grid entry from a public registry of geodetic datums. The Title and URL values should be the same values from the public registry of geodetic datums. Example of public registry of geodetic datums: EPSG (https://epsg.io) and PROJ (https://proj.org/).
Example:
"CoordinateReferenceSystemID": {
"Type": "EPSG",
"Code": "EPSG:4326",
"Title": "WGS84 - World Geodetic System 1984, used in GPS - EPSG:4326",
"URL": "https://epsg.io/4326"
}
"CoordinateReferenceSystemID": {
"Type": "PROJ",
"Title": "Albers Equal Area",
"URL": "https://proj.org/operations/projections/aea.html"
}
Element Specification
CoordinateReferenceSystemID is required in the GRID (Cardinality: 1).
Model | Element | Type | Constraints | Required? | Cardinality | Notes |
|---|---|---|---|---|---|---|
| GRID | GridDefinition/Type | Enumeration | "EPSG", "PROJ", "other" | Yes | 1 | |
| GRID | GridDefinition/Code | String | "pattern": "^EPSG:[0-9\\.]{4,}$" | No | 0..1 | Currently, only needed for EPSG entries. |
| GRID | GridDefinition/Title | string | 4 - 2048 characters | Yes | 1 | |
| GRID | GridDefinition/URL | String | 16 - 2048 characters | Yes | 1 |
Metadata Validation
All records undergo schema and business rule validation before entering the system.
- This element is required.
- Must contain the correct enumeration and pattern.
History
GRID Versioning
Version | Date | What Changed |
|---|---|---|
| 0.0.1 | 2023-04-27 | First version published on wiki |