gridgraph

gridgraph,trigrid-method

gridgraph,hexagrid-method

gridgraph,facelayer-method

The function can be applied to both grids and to <code>facelayer</code>-class object of <code>logical</code> values. The resulting graph will have the characteristics of the original grid (directed/undirected etc.).

Implementation of icosahedral grids in three dimensions. The spherical-triangular tessellation can be set to create grids with custom resolutions. Both the primary triangular and their inverted penta-hexagonal grids can be calculated. Additional functions are provided that allow plotting of the grids and associated data, the interaction of the grids with other raster and vector objects, and treating the grids as a graphs.

Adam Kocsis

icosa

Global Triangular and Penta-Hexagonal Grids Based on Tessellated
Icosahedra

Adam T. Kocsis

Deutsche Forschungsgemeinschaft 

FAU GeoZentrum Nordbayern 

gridgraph function

<dl><dt>x</dt>
<dd>(<code>trigrid</code>, <code>hexagrid</code> or <code>facelayer</code>) The icosahedral grid or <code>facelayer</code>.</dd>
<dt>...</dt>
<dd>Arguments passed to the class specific methods.</dd>
<dt>directed</dt>
<dd><code>logical</code> Defaults to <code>FALSE</code>, creating an undirected graph. If <code>TRUE</code>, then the graph will be directed.</dd>
<dt>distances</dt>
<dd><code>logical</code> Defaults to <code>FALSE</code>. If <code>TRUE</code>, then the distances between the linked faces will be calculated and will be rendered to the edges as <code>"dist"</code>.</dd></dl>

Arguments

Create or instantiate an graph class graph from the faces of an icosahedral grid — gridgraph

<dl>

<dt>x</dt>
<dd>(<code>trigrid</code>, <code>hexagrid</code> or <code>facelayer</code>) The icosahedral grid or <code>facelayer</code>.</dd>


<dt>...</dt>
<dd>Arguments passed to the class specific methods.</dd>


<dt>directed</dt>
<dd><code>logical</code> Defaults to <code>FALSE</code>, creating an undirected graph. If <code>TRUE</code>, then the graph will be directed.</dd>


<dt>distances</dt>
<dd><code>logical</code> Defaults to <code>FALSE</code>. If <code>TRUE</code>, then the distances between the linked faces will be calculated and will be rendered to the edges as <code>"dist"</code>.</dd>

</dl>

Create or instantiate an <code><a href='https://rdrr.io/pkg/igraph/man/make_graph.html'>graph</a></code> class graph from the faces of an icosahedral grid

Create or instantiate an <code><a href="/link/graph?package=icosa&version=0.11.1" data-mini-rdoc="icosa::graph">graph</a></code> class graph from the faces of an icosahedral grid

gridgraph: Create or instantiate an `graph` class graph from the faces of an icosahedral grid

Description

Usage

Value

Arguments