This function utilizes the spdep
and igraph
packages to evaluate several measures of spatial connectivity.
polygonAdjacency(x, v = "MUSYM", ...)
a list
containing:
commonLines
: an integer vector of feature IDs, describing polygons sharing edges and values of v
(map unit labels)
adjMat
: weighted adjacency matrix, suitable for visualization with plotSoilRelationGraph()
sf
object containing simple polygon features, some of which should share edges
character, name of column in attribute table describing map unit labels
additional arguments passed to spdep::poly2nb()
D.E. Beaudette
Examples are presented in this tutorial.