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hexify: Equal-Area Hex Grids on the Snyder ISEA Icosahedron

Provides functions to build and use hexagonal discrete global grids using the Icosahedral Snyder Equal Area ('ISEA') projection (Snyder 1992 <doi:10.3138/27H7-8K88-4882-1752>) and the 'H3' hierarchical hexagonal system (Uber Technologies). Implements the 'ISEA' discrete global grid system (Sahr, White and Kimerling 2003 <doi:10.1559/152304003100011090>). Includes a fast C++ core for 'ISEA' projection and aperture quantization, an included 'H3' v4.4.1 C library for native 'H3' grid operations, and 'sf'/'terra'-compatible R wrappers for grid generation and coordinate assignment. Output is compatible with 'dggridR' for interoperability.

Version: 0.8.2
Depends: R (≥ 3.5)
Imports: sf, Rcpp, methods, rlang
LinkingTo: Rcpp
Suggests: testthat (≥ 3.0.0), knitr, rmarkdown, terra, raster, ggplot2, RColorBrewer, rnaturalearth, tibble, gridExtra, leaflet
Published: 2026-08-22
DOI: 10.32614/CRAN.package.hexify
Author: Gilles Colling ORCID iD [aut, cre, cph], Uber Technologies, Inc. [ctb, cph] (H3 C library, src/h3 (Apache-2.0))
Maintainer: Gilles Colling <gilles.colling051 at gmail.com>
BugReports: https://github.com/gcol33/hexify/issues
License: MIT + file LICENSE
Copyright: see file COPYRIGHTS
URL: https://gillescolling.com/hexify/
NeedsCompilation: yes
SystemRequirements: C99
Language: en-US
Materials: README, NEWS
CRAN checks: hexify results

Documentation:

Reference manual: hexify.html , hexify.pdf
Vignettes: H3 Grid Support (source, R code)
Quick Start (source, R code)
Mathematical Foundations (source, R code)
Visualization (source, R code)
Practical Workflows (source, R code)

Downloads:

Package source: hexify_0.8.2.tar.gz
Windows binaries: r-devel: hexify_0.8.2.zip, r-release: hexify_0.8.2.zip, r-oldrel: hexify_0.8.2.zip
macOS binaries: r-release (arm64): hexify_0.8.2.tgz, r-oldrel (arm64): hexify_0.8.2.tgz, r-release (x86_64): hexify_0.8.2.tgz, r-oldrel (x86_64): hexify_0.8.2.tgz
Old sources: hexify archive

Reverse dependencies:

Reverse imports: pycnogrid

Linking:

Please use the canonical form https://CRAN.R-project.org/package=hexify to link to this page.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.