Geographic information — Discrete Global Grid Systems Specifications — Part 1: Core Reference System and Operations, and Equal Area Earth Reference System

This document supports the definition of:

— A Discrete Global Grid Systems (DGGS) core comprising:

— an RS using zonal identifiers with structured geometry, and

— functions providing import, export and topological query,

— Common spatio-temporal classes for geometry, topology, RS using zonal identifiers, zonal identifiers and zones, based on ISO 19111 CRS. The spatio-temporal scope is constrained to:

— spatial elements that are invariant through all time, and

— temporal elements that are invariant across all space.

— Equal-Area Earth Reference Systems (EAERSs) for Equal-Area Earth DGGS.