1 Scope
This document supports the definition of:
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— A Discrete Global Grid Systems (DGGS) core comprising:
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— an RS using zonal identifiers with structured geometry, and
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— functions providing import, export and topological query,
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— Common spatio-temporal classes for geometry, topology, RS using zonal identifiers, zonal identifiers and zones, based on ISO 19111CRS. The spatio-temporal scope is constrained to:
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— spatial elements that are invariant through all time, and
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— temporal elements that are invariant across all space.
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— Equal-Area Earth Reference Systems (EAERSs) for Equal-Area Earth DGGS.