Define the explicit legacy dggridR fallback

This opt-in constructor quarantines the older sequence-number behavior. Legacy cells support point, center, boundary, and sf conversion, but not the modern hierarchy or neighbor operations.

Usage

legacy_grid(resolution, pole_lon = 11.25, pole_lat = 58.28252559, azimuth = 0)

Arguments

resolution

ISEA3H resolution.

pole_lon, pole_lat, azimuth

Orientation in degrees.

Value

A globalhex_legacy_grid object.