The rHEALPix Discrete Global Grid System: considerations for Canada

David Bowater · Emmanuel Stefanakis

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Geographic Information Systems Studies Historical Geography and Cartography 3D Modeling in Geospatial Applications

Abstract

Geospatial data is ubiquitous. However, the geographic grid is not designed to manage, store, or integrate huge volumes of heterogeneous geospatial data. One possible solution to these challenges is a Discrete Global Grid System (DGGS), which was recently announced as a new standard by the Open Geospatial Consortium (OGC). If Canada plans to utilize a DGGS in the future to reference geospatial data, research is needed to explore characteristics and suitability of different DGGSs. Although hexagonal- and triangular-based DGGSs are popular, the square-based rHEALPix DGGS mirrors the geographic grid more closely and has many advantages. This paper reviews key features of the rHEALPix DGGS, outlines recent work, and qualitatively considers cell shape and cell orientation with respect to Canada, including how variations can be avoided or exploited by rotating the grid.

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References

2003Geodesic Discrete Global Grid Systems 1992Cartographic and Geometric Components of a Global Sampling Design for Environmental Monitoring 2015Categorization and Conversions for Indexing Methods of Discrete Global Grid Systems 2016The rHEALPix Discrete Global Grid System 2007Mapping on the HEALPix grid 2008A comparison of intercell metrics on discrete global grid systems 2009A discrete square global grid system based on the parallels plane projection

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2022Applied open-source Discrete Global Grid Systems 2019An open-source web service for creating quadrilateral grids based on the rHEALPix Discrete Global Grid System 2023Efficient Distortion Mitigation and Partition Reduction in Mapping Global Geodata: Dual Orthogonal Equidistant Cylindrical Projection Approach 2022A Review of the Research on Discrete Global Grid Systems in Digital Earth 2023Construction of quality evaluation indicator system for diamond discrete global grid systems 2019On the isolatitude property of the rHEALPix Discrete Global Grid System

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