Skip to contents

Generate a global hexagon grid

Source: R/grid_helpers.R
grid_global.Rd

Creates hexagon polygons covering the entire Earth.

Usage

grid_global(grid, wrap_dateline = TRUE)

Arguments

grid

A HexGridInfo object specifying the grid parameters

wrap_dateline

Logical. If TRUE (default), calls sf::st_wrap_dateline() to split antimeridian-crossing polygons, which flat maps and planar (GEOS) operations need. Set to FALSE for orthographic/globe projections where wrapping creates gaps, and for spherical (s2) operations: each cell then stays one polygon whose corners lie in -180..180, so a cell crossing the antimeridian spans a flat lon/lat map.

Value

sf object with hexagon polygons

Details

Every cell of the grid, one row each, in cell ID order for ISEA grids. For large grids (many small cells), consider using grid_rect() to generate regional subsets.

See also

grid_rect for regional grids

Examples

# Coarse global grid
grid <- hex_grid(area_km2 = 100000)
global <- grid_global(grid)
plot(global)