findNSneighbors {wpm} | R Documentation

## Find the top and bottom neighbors of an element of a matrix

### Description

Function for spatial constraint that only looks for North (top) and South (bottom) neighbors of the current element (i,j) of the matrix m.

### Usage

    findNSneighbors(m, i, j)

### Arguments

`m,` | matrix
`i,` | integer, line index in the matrix
`j,` | integer, column index in the matrix

### Value

A vector containing the North and South neighbors of the element (i,j) of the matrix being processed.

[Package wpm version 1.2.1 Index]