<p>This document supports the definition of:</p>
<p>— A Discrete Global Grid Systems (DGGS) core comprising:</p>
<p>— an RS using zonal identifiers with structured geometry, and</p>
<p>— functions providing import, export and topological query,</p>
<p>— 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:</p>
<p>— spatial elements that are invariant through all time, and</p>
<p>— temporal elements that are invariant across all space.</p>
<p>— Equal-Area Earth Reference Systems (EAERSs) for Equal-Area Earth DGGS.</p>
Registration number (WIID)
32588
Scope
<p>This document supports the definition of:</p>
<p>— A Discrete Global Grid Systems (DGGS) core comprising:</p>
<p>— an RS using zonal identifiers with structured geometry, and</p>
<p>— functions providing import, export and topological query,</p>
<p>— 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:</p>
<p>— spatial elements that are invariant through all time, and</p>
<p>— temporal elements that are invariant across all space.</p>
<p>— Equal-Area Earth Reference Systems (EAERSs) for Equal-Area Earth DGGS.</p>
