ngspatial (version 0.5-2)

adjacency.matrix: Return an adjacency matrix for a square lattice.

Description

Return an adjacency matrix for a square lattice.

Usage

adjacency.matrix(m, n = NULL)

Arguments

m

the number of rows in the lattice.

n

the number of columns in the lattice. Defaults to NULL. If missing, the lattice is assumed to be m by m.

Value

• A matrix $A$ of 0s and 1s, where $A_{ij}$ is equal to 1 iff vertices $i$ and $j$ are adjacent.

Details

This function builds the adjacency matrix for the m by n square lattice.