hexify_assign: Assign hex cells ('ISEA3H', aperture 3) for lon/lat

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

Assign hex cells ('ISEA3H', aperture 3) for lon/lat

Description

Forward -> quantize (Z3) -> center (face) -> inverse to lon/lat. Optionally return polygons (sf), in which case sf must be installed.

Usage

hexify_assign(
  lon,
  lat,
  effective_res,
  match_dggrid_parity = TRUE,
  make_polygons = FALSE
)

Arguments

lon, lat	numeric vectors (same length), degrees.
effective_res	integer effective resolution (>= 1).
match_dggrid_parity	logical; TRUE matches 'ISEA3H' parity used by 'dggridR'.
make_polygons	logical; if TRUE, return an sf with hex polygons.

Value

data.frame with id, face, effective_res, center_lon, center_lat; if make_polygons=TRUE, an sf with geometry column.

hexify documentation built on March 1, 2026, 1:07 a.m.