calculate_resolution_for_area

Uses the 'ISEA3H' cell count formula: N = 10 * aperture^res + 2
This matches 'dggridR' resolution numbering exactly.

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'

calculate_resolution_for_area function

<dl><dt>target_area_km2</dt>
<dd>Target area in square kilometers</dd>
<dt>aperture</dt>
<dd>Aperture (3, 4, or 7)</dd></dl>

Arguments

Calculate resolution for target area — calculate_resolution_for_area

<dl>

<dt>target_area_km2</dt>
<dd>Target area in square kilometers</dd>


<dt>aperture</dt>
<dd>Aperture (3, 4, or 7)</dd>

</dl>

calculate_resolution_for_area: Calculate resolution for target area

Description

Usage

Value

Arguments