{"id":23392,"date":"2025-10-24T07:10:00","date_gmt":"2025-10-24T07:10:00","guid":{"rendered":"https:\/\/fm-connect1.fortmindz.in\/wp-ogc\/?p=23392"},"modified":"2025-11-13T04:44:21","modified_gmt":"2025-11-13T04:44:21","slug":"ogc-membership-approves-ogc-api-discrete-global-grid-systems-part-1-core-as-an-official-ogc-standard","status":"publish","type":"post","link":"https:\/\/fm-connect1.fortmindz.in\/wp-ogc\/announcement\/ogc-membership-approves-ogc-api-discrete-global-grid-systems-part-1-core-as-an-official-ogc-standard\/","title":{"rendered":"OGC Membership Approves OGC API – Discrete Global Grid Systems – Part 1: Core as an Official OGC Standard\u00a0"},"content":{"rendered":"\n

The Open Geospatial Consortium (OGC) is pleased to announce that its Membership has approved OGC API – Discrete Global Grid Systems – Part 1: Core<\/mark><\/strong><\/a> as an official OGC Standard. <\/p>\n\n\n\n

The OGC API\u2009-\u2009Discrete Global Grid Systems\u2009-\u2009Part 1: Core<\/mark><\/a> Standard defines requirements that can be implemented and integrated into a deployed Web API to support the retrieval of geospatial data for a specific area, time and resolution of interest, based on a specific Discrete Global Grid Reference System (DGGRS). Additionally, the Standard defines operations to query the list of DGGRS zones from which data is available and\/or matching a query, which can be specified using the OGC Common Query Language (CQL2). <\/p>\n\n\n\n

A DGGRS is an integrated system comprised of a specific Discrete Global Grid Hierarchy (DGGH), a Zone Identifier Reference System (ZIRS), and a deterministic sub-zone ordering. Although the term Discrete Global Grid System (DGGS)<\/a> is commonly used to refer to either a DGGH or a DGGRS, OGC terminology defines a DGGS as an integrated system comprising a hierarchy of discrete global grids (DGGH), spatiotemporal referencing by zonal identifiers (ZIRS), and functions for quantization, zonal query, and interoperability. This definition of DGGS implies a system in the sense of a software implementation, which may support one or more DGGRS, as opposed to merely a \u201cseries of discrete global grids\u201d (a DGGH), as used in some literature.  <\/p>\n\n\n\n

The OGC API\u2009-\u2009Discrete Global Grid Systems\u2009-\u2009Part 1: Core Standard<\/a> also specifies the DGGS-JSON encoding for retrieving raster data quantized to sub-zones of an ancestral base DGGRS zone, as well as the DGGS-JSON-FG extension to the Features and Geometry JSON (JSON-FG) data format for encoding features and geometry whose vertices are quantized to sub-zones of an ancestral DGGRS zone. Requirements classes for additional widely adopted geospatial data formats are also specified to ensure interoperability with traditional tools that may not yet be DGGRS-aware.<\/p>\n\n\n\n

Compact binary representations of these JSON-encoded formats based on Universal Binary JSON, as well as alternative DGGS-optimized encodings based on Zarr and netCDF, are also proposed. Zone lists are encoded in JSON using a simple array of textual identifiers, while a compact binary representation of zone lists is also defined. <\/p>\n\n\n\n

To help developers quickly implement products that support this Standard, example API definitions and schemas are available on the OGC API \u2013 DGGS webpage<\/a>. These resources conform to OpenAPI Specification v3.0<\/a>, making them easy to integrate into various Web APIs.   <\/p>\n\n\n\n

OGC API\u2009-\u2009Discrete Global Grid Systems\u2009-\u2009Part 1: Core<\/a> is the outcome of the work and dedication of the Discrete Global Grid Systems Standards Working Group. Development of the Standard was led by the following editors and submitters:  <\/p>\n\n\n\n