a5R: 'A5' Discrete Global Grid System

Bindings for the "A5 geospatial index" <https://a5geo.org/>. 'A5' partitions the Earth's surface into pentagonal cells across 31 resolution levels using an equal-area projection onto a dodecahedron. Provides functions for indexing coordinates to cells, traversing the cell hierarchy, computing cell boundaries, and compacting/uncompacting cell sets. Powered by the 'A5' 'Rust' crate via 'extendr'.

Package details

AuthorHugh Graham [aut, cre], belian.earth [cph]
MaintainerHugh Graham <hugh@belian.earth>
LicenseApache License (>= 2)
Version0.3.1
URL https://github.com/belian-earth/a5R https://belian-earth.github.io/a5R/
Package repositoryView on CRAN
Installation Install the latest version of this package by entering the following in R:
install.packages("a5R")

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a5R documentation built on March 26, 2026, 5:10 p.m.