gridadjacencymatrix

Given the dimensions of a rectangular grid of points, this command
 creates the adjacency matrix for the corresponding neighbourhood
 graph, whose vertices are the grid points, and whose edges are the
 joins between neighbouring grid points.

datagen

Defines sparse three-dimensional arrays
and supports standard operations on them.
The package also includes utility functions for
matrix calculations that are common in
statistics, such as quadratic forms.

Adrian Baddeley

spatstat.sparse

Sparse Three-Dimensional Arrays and Linear Algebra Utilities

Rolf Turner

Ege Rubak

gridadjacencymatrix function

<dl> <dt>dims</dt>
<dd>Grid dimensions. An integer, or a vector of two integers.
 First entry specifies the number of points in the \(y\) direction.</dd> <dt>across</dt>
<dd>Logical value equal to <code>TRUE</code> if horizontal neighbours should
 be joined.</dd> <dt>down</dt>
<dd>Logical value equal to <code>TRUE</code> if vertical neighbours should
 be joined.</dd> <dt>diagonal</dt>
<dd>Logical value equal to <code>TRUE</code> if diagonal neighbours should
 be joined.</dd></dl>

Arguments

Author

Create Adjacency Matrix for Spatial Grid — gridadjacencymatrix

<dl>

 <dt>dims</dt>
<dd>Grid dimensions. An integer, or a vector of two integers.
 First entry specifies the number of points in the \(y\) direction.</dd>

 <dt>across</dt>
<dd>Logical value equal to <code>TRUE</code> if horizontal neighbours should
 be joined.</dd>

 <dt>down</dt>
<dd>Logical value equal to <code>TRUE</code> if vertical neighbours should
 be joined.</dd>

 <dt>diagonal</dt>
<dd>Logical value equal to <code>TRUE</code> if diagonal neighbours should
 be joined.</dd>

</dl>

gridadjacencymatrix: Create Adjacency Matrix for Spatial Grid

Description

Usage

Value

Arguments

Author

Details

Examples