hexify_eff_res_to_area

Calculates approximate cell area for ISEA3H (aperture 3) grids.
Based on calibration: eff_res 10 = 863.8006 km^2.

internal

Provides functions to build and use equal-area hexagonal discrete
global grids using the 'Snyder' 'ISEA' projection ('Snyder' 1992
<doi:10.3138/27H7-8K88-4882-1752>). Implements the 'ISEA' discrete global grid
system ('Sahr', 'White' and 'Kimerling' 2003 <doi:10.1559/152304003100011090>).
Includes a fast 'C++' core for projection and aperture quantization, and
'sf'/'terra'-compatible R wrappers for grid generation and coordinate assignment.
Output is compatible with 'dggridR' for interoperability.

Gilles Colling

hexify

Equal-Area Hex Grids on the 'Snyder' 'ISEA' 'Icosahedron'

hexify_eff_res_to_area function

<dl><dt>eff_res</dt>
<dd>Effective resolution (0.5 * resolution for aperture 3)</dd></dl>

Arguments

Convert effective resolution to area — hexify_eff_res_to_area

<dl>

<dt>eff_res</dt>
<dd>Effective resolution (0.5 * resolution for aperture 3)</dd>

</dl>

hexify_eff_res_to_area: Convert effective resolution to area

Description

Usage

Value

Arguments

See Also