append_matrix

Combines different connectivity matrices by row names and column names by
performing a 2-dimensional full join. Missing edges are filled with <code>0</code>
(default) or <code>NA</code> (argument <code>na_to_zero</code>).

Provides functions to work with directed (asymmetric) and
undirected (symmetric) spatial networks. It makes the creation of
connectivity matrices easier, i.e. a binary matrix of dimension n x n, where
n is the number of nodes (sampling units) indicating the presence (1) or
the absence (0) of an edge (link) between pairs of nodes. Different network
objects can be produced by 'chessboard': node list, neighbor list, edge
list, connectivity matrix. It can also produce objects that will be used
later in Moran's Eigenvector Maps (Dray et al. (2006) <doi:10.1016/j.ecolmodel.2006.02.015>)
and Asymetric Eigenvector Maps (Blanchet et al. (2008) <doi:10.1016/j.ecolmodel.2008.04.001>),
methods available in the package 'adespatial' (Dray et al. (2023)
<https://CRAN.R-project.org/package=adespatial>). This work is part of the
FRB-CESAB working group Bridge
<https://www.fondationbiodiversite.fr/en/the-frb-in-action/programs-and-projects/le-cesab/bridge/>.

Nicolas Casajus

chessboard

Create Network Connections Based on Chess Moves

Erica Rievrs Borges

Eric Tabacchi

Guillaume Fried

Nicolas Mouquet

append_matrix function

<dl><dt>...</dt>
<dd>one or several <code>matrix</code> objects created by
<code>connectivity_matrix()</code>.</dd>
<dt>na_to_zero</dt>
<dd>a <code>logical</code> value. If <code>TRUE</code> (default) missing edges are
coded as <code>0</code>. Otherwise they will be coded as <code>NA</code>.</dd></dl>

Arguments

Combine several connectivity matrices — append_matrix

<dl>

<dt>...</dt>
<dd>one or several <code>matrix</code> objects created by
<code>connectivity_matrix()</code>.</dd>


<dt>na_to_zero</dt>
<dd>a <code>logical</code> value. If <code>TRUE</code> (default) missing edges are
coded as <code>0</code>. Otherwise they will be coded as <code>NA</code>.</dd>

</dl>

append_matrix: Combine several connectivity matrices

Description

Usage

Value

Arguments

Examples