chessboard

Description

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/>.

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Error(s) in re-building vignettes:
  ...
--- re-building ‘chess-pieces.Rmd’ using rmarkdown
Warning in file("", "w+b") :
  cannot open file '/tmp/RtmpGvTNkf/Rf34d84f3f059353': No space left on device

Quitting from chess-pieces.Rmd:298-318 [cb-rook]

...[truncated]...
 ‘chessboard.Rmd’

--- re-building ‘visualization-tools.Rmd’ using rmarkdown
--- finished re-building ‘visualization-tools.Rmd’

SUMMARY: processing the following file failed:
  ‘chess-pieces.Rmd’

Error: Vignette re-building failed.
Execution halted

Dependency Network

R Observatory began tracking this package on Mar 10, 2026; it first appeared on CRAN Oct 14, 2023. Releases before tracking aren’t shown.