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Discrete Global Grid Reference Systems Registry

Release: 1st Sept, 2025

Modified on: 15th Sept, 2025
This version:
http://w3id.org/dggrs/system/v1.0.0
Revision:
v1.0.0
Authors:
Luís Moreira de Sousa, Insituto Superior Técnico, University of Lisbon
Download serialization:
JSON-LD RDF/XML N-Triples TTL
License:
https://creativecommons.org/licenses/by-nc-nd/4.0/ License
Visualization:
Visualize with WebVowl
Provenance of this page
DGGRS Registry

Abstract

This a registry for Discrete Global Grid Reference Systems (DGGRS). Each individual may identify a base polyhedron, a map projection, a base cell shape and an aperture. A DGGRS may be implemented differently in different software packages. Check also the DGGRS implement registry for a thorough list of DGGRS software packages. This registry was created to support the development of the GeoPlegma project, providing unique and universal identifiers for DGGRS and related software.

Introduction back to ToC

Contains a list of individuals of type dggrs:DGGRS. As a Semantic Web document, it provides unique and universal identifiers to each DGGRS catalogued.

DGGRS Registry: Overview back to ToC

This ontology has the following classes and properties.

Named Individuals

Rules

DGGRS Registry: Description back to ToC

This is a placeholder text for the description of your ontology. The description should include an explanation and a diagram explaining how the classes are related, examples of usage, etc.

Cross-reference for DGGRS Registry classes, object properties and data properties back to ToC

This section provides details for each class and property defined by DGGRS Registry.

Named Individuals

Igeo7-Z7ni back to ToC or Named Individual ToC

IRI: https://w3id.org/dggrs/system/igeo7-z7

Icosahedral Snyder equal-area projection. Hexagonal zone shape with reminiscent pentagons, refined with aperture 7. Uses Z7 indexing mechanism.
belongs to
d g g r s c

IVEA3H-9Rni back to ToC or Named Individual ToC

IRI: https://w3id.org/dggrs/system/ivea3h-9r

Icosahedral equal-area slice & dice projection with great circle method. Hexagonal zone shape with reminiscent pentagons, refined with perture 3. Applies the 9R indexing mechanism divised by Ecere.
belongs to
d g g r s c

IVEA7H-Z7ni back to ToC or Named Individual ToC

IRI: https://w3id.org/dggrs/system/ivea7h-z7

Icosahedral equal-area slice & dice projection with great circle method. Hexagonal zone shape with reminiscent pentagons, refined with aperture 7. Plus Z7 indexing mechanism.
belongs to
d g g r s c

Rules

Legend back to ToC

ni: Named Individuals

References back to ToC

Add your references here. It is recommended to have them as a list.

Acknowledgments back to ToC

The authors would like to thank Silvio Peroni for developing LODE, a Live OWL Documentation Environment, which is used for representing the Cross Referencing Section of this document and Daniel Garijo for developing Widoco, the program used to create the template used in this documentation.