 CRS | Identifier for a Coordinate Reference System |
| CRSExtent | Geospatial extent expressed in a particular CRS |
 CRSRegistry | Identifier for an authority defining a CRS |
| DGGRS | Main DGGAL class for defining and querying a particular Discrete Global Grid Reference System |
| DGGRSZone | 64-bit integer identifying a particular zone of a Discrete Global Grid Reference System |
| DGGSJSON | Object representing the content of a DGGS-JSON file storing raster data quantized to a particular DGGRS for a specific DGGRS zone at one or more depths relative to that parent zone |
| DGGSJSONDepth | Component of a DGGS-JSON data file for a specific relative depth |
| DGGSJSONGrid | Component of a DGGS-JSON data file describing a regular or irregular grid for dimensions not part of the DGGRS |
| DGGSJSONShape | Component of a DGGS-JSON data file describing the shape of data values (the number of data values in terms of zones and other dimensions) |
| FieldType | Identifier for basic data types |
| FieldTypeEx | Data type identifier with additional information such as format and memory allocation details |
| FieldValue | Data type for holding field values including type identifier |
| FieldValueFormat | Data type-specific format identifier |
| GGGZone | 64-bit integer identifying a particular zone of the GNOSIS Global Grid DGGRS |
| GNOSISGlobalGrid | DGGRS class for GNOSIS Global Grid, an axis-aligned quad-tree defined in WGS84 latitude and longitude, with special handling of polar regions, corresponding to the OGC 2D Tile Matrix Set of the same name |
| GeoExtent | Geospatial extent expressed in WGS84 geodetic coordinates |
| GeoPoint | Geospatial position expressed in geodetic coordinates |
| I3HZone | 64-bit integer identifying a particular zone of the RhombicIcosahedral3H DGGRSs (such as ISEA3H and IVEA3H) |
| I9RZone | 64-bit integer identifying a particular zone of the RhombicIcosahedral9R DGGRSs (such as ISEA9R and IVEA9R) |
| ISEA3H | DGGRS class for ISEA3H, an equal area hexagonal grid with a refinement ratio of 3 defined in the Icosahedral Snyder Equal Area (ISEA) projection |
| ISEA9R | DGGRS class for ISEA9R, an equal area rhombic grid with a refinement ratio of 9 defined in the ISEA projection transformed into a 5x6 Cartesian space resulting in axis-aligned square zones |
| IVEA3H | DGGRS class for IVEA3H, an equal area hexagonal grid with a refinement ratio of 3 defined in the Icosahedral Vertex-oriented great circle Equal Area (IVEA) projection, based on Slice & Dice (2006: https://doi.org/10.1559/152304006779500687) |
| IVEA9R | DGGRS class for IVEA9R, an equal area rhombic grid with a refinement ratio of 9 defined in the IVEA projection transformed into a 5x6 Cartesian space resulting in axis-aligned square zones |
| JSONSchema | Object representing a JSON Schema |
| JSONSchemaType | Identifier for JSON Schema types |
| RhombicIcosahedral3H |
| RhombicIcosahedral9R |
 nullZone | 0xFFFFFFFFFFFFFFFFLL | Special DGGRSZone value representing a null zone |
| wgs84InvFlattening | 298.257223563 | The inverse flattening of the WGS84 ellispsoid |
| wgs84Major | ecere::sys::Meters { 6378137.0 } | Length of the WGS84 ellipsoid major radius in meters |
| wgs84Minor | wgs84Major - (wgs84Major / wgs84InvFlattening) | Length of the WGS84 ellipsoid minor radius in meters |
| wholeWorld | GeoExtent { { -90, -180 }, { 90, 180 } } | The geographic extent for the whole world |
readDGGSJSON