hexify_roundtrip_test: Round-trip accuracy test

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

Round-trip accuracy test

Description

Tests the accuracy of the coordinate conversion functions by converting coordinates to cells and back, measuring the distance between original and reconstructed coordinates.

Usage

hexify_roundtrip_test(grid, lon, lat, units = "km")

Arguments

grid	Grid specification
lon	Longitude to test
lat	Latitude to test
units	Distance units ("km" or "degrees")

Value

List with:

original	Original coordinates
cell	Cell index
reconstructed	Reconstructed coordinates
error	Distance between original and reconstructed

See Also

Other coordinate conversion: hexify_cell_id_to_quad_ij(), hexify_cell_to_icosa_tri(), hexify_cell_to_lonlat(), hexify_cell_to_plane(), hexify_cell_to_quad_ij(), hexify_cell_to_quad_xy(), hexify_grid_cell_to_lonlat(), hexify_grid_to_cell(), hexify_icosa_tri_to_plane(), hexify_icosa_tri_to_quad_ij(), hexify_icosa_tri_to_quad_xy(), hexify_lonlat_to_cell(), hexify_lonlat_to_plane(), hexify_lonlat_to_quad_ij(), hexify_quad_ij_to_cell(), hexify_quad_ij_to_icosa_tri(), hexify_quad_ij_to_xy(), hexify_quad_xy_to_cell(), hexify_quad_xy_to_icosa_tri()

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