dggrid_43h_sequence

Create an aperture sequence following DGGRID's 43H pattern:
first num_ap4 resolutions use aperture 4, then aperture 3.

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'

dggrid_43h_sequence function

<dl><dt>num_ap4</dt>
<dd>Number of aperture-4 resolutions</dd>
<dt>num_ap3</dt>
<dd>Number of aperture-3 resolutions</dd></dl>

Arguments

Create DGGRID 43H aperture sequence — dggrid_43h_sequence

<dl>

<dt>num_ap4</dt>
<dd>Number of aperture-4 resolutions</dd>


<dt>num_ap3</dt>
<dd>Number of aperture-3 resolutions</dd>

</dl>

dggrid_43h_sequence: Create DGGRID 43H aperture sequence

Description

Usage

Value

Arguments

See Also

Examples