extract_grid

Internal function to extract a HexGridInfo from different input types.
Accepts HexGridInfo, HexData, or legacy hexify_grid objects.

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'

extract_grid function

<dl><dt>x</dt>
<dd>Object containing grid info</dd>
<dt>allow_null</dt>
<dd>If TRUE, return NULL when x is NULL</dd></dl>

Arguments

Extract grid from various objects — extract_grid

<dl>

<dt>x</dt>
<dd>Object containing grid info</dd>


<dt>allow_null</dt>
<dd>If TRUE, return NULL when x is NULL</dd>

</dl>

extract_grid: Extract grid from various objects

Description

Usage

Value

Arguments