Issues

• gridRing silently returns wrong results when the ring encircles pentagons without touching one

  uber/h3#1241 · Filter by author Abhayindia opened on Sep 17, 2026
  2

• unchecked signed accumulation in size calculation functions

  uber/h3#1204 · Filter by author anaef opened on Jul 30, 2026
  2

• Outdated dependencies (vulnerabilities)

  uber/h3#1203 · Filter by author brettshearer opened on Jul 30, 2026
  4

• A native H3 way of doing Voronoi

  uber/h3#1169 · Filter by author ischlo opened on Jun 3, 2026
  1

• Requesting new containment mode: h3.ContainmentEdge

  uber/h3#1160 · Filter by author bert-huang opened on May 9, 2026

• gridPathCells can fail

  uber/h3#1150 · Filter by author charleskawczynski opened on Apr 6, 2026
  2

• Replace cellsToLinkedMultiPolygon implementation with cellsToMultiPolygon

  uber/h3#1127 · Filter by author ajfriend opened on Feb 15, 2026 · v4.5

• Directed Edge disagrees with Hex2d i-direction Neighbor Resolution for the North Pole

  uber/h3#1118 · Filter by author joshuaRosales opened on Feb 6, 2026

• Consider using sorting instead of hashing to identify symmetric edge pairs

  uber/h3#1117 · Filter by author ajfriend opened on Jan 25, 2026

• Consider alternative construction of globe multi polygon

  uber/h3#1110 · Filter by author ajfriend opened on Dec 18, 2025
  3

• Consider adding function to expose H3_ERROR_END in public API

  uber/h3#1109 · Filter by author ajfriend opened on Dec 17, 2025

• Consider raising error when edge arcs close to 180 degrees are encountered

  uber/h3#1108 · Filter by author ajfriend opened on Dec 17, 2025

• Consider exposing "nextCell" or "cellToLastChild" function

  uber/h3#1106 · Filter by author isaacbrodsky opened on Dec 11, 2025
  1

• Add cellsToMultiPolygon function

  uber/h3#1103 · Filter by author ajfriend opened on Dec 1, 2025
  1

• Warning: System::load invoked from unnamed module when using h3 on Java 25

  uber/h3#1097 · Filter by author unalpolat opened on Nov 19, 2025

• OGC-DGGRS-API feedback. New function getGeometricSubZones

  uber/h3#1095 · Filter by author jsorel opened on Nov 13, 2025
  9

• Documentation: Add comparison to A5

  uber/h3#1081 · Filter by author garikAsplund opened on Nov 5, 2025
  1

• Add edgeToVertexes function

  uber/h3#1071 · Filter by author ajfriend opened on Oct 18, 2025

• Docs page for hierarchical (non-) containment

  uber/h3#1057 · Filter by author ajfriend opened on Oct 13, 2025

• "polygonToCells" fails near poles

  uber/h3#1051 · Filter by author benguild opened on Oct 3, 2025 · v4.5

• "cellsToMultiPolygon" occasionally produces degenerate polygons with only 1 vertex

  uber/h3#1049 · Filter by author benguild opened on Oct 1, 2025 · v4.5
  4

• "polygonToCellsExperimental" can give incorrect results near antimeridian

  uber/h3#1048 · Filter by author benguild opened on Oct 1, 2025 · v4.5
  1

• Two neighbor cells give error with "cellsToLinkedMultiPolygon"

  uber/h3#1046 · Filter by author benguild opened on Sep 29, 2025 · v4.5
  6

• Global Coordinate System Using H3

  uber/h3#1034 · Filter by author gstfrenkel opened on Aug 7, 2025
  1

• cells_to_multi_polygon errors near the poles

  uber/h3#1029 · Filter by author RyanDraves opened on Jul 21, 2025