is.connected.ppp: Determine Whether a Point Pattern is Connected

In spatstat.geom: Geometrical Functionality of the 'spatstat' Family

Determine Whether a Point Pattern is Connected

Description

Determine whether a point pattern is topologically connected when all pairs of points closer than a threshold distance are joined.

Usage

## S3 method for class 'ppp'
is.connected(X, R, ...)

Arguments

X	A point pattern (object of class "ppp").
R	Threshold distance. Pairs of points closer than R units apart will be joined together.
...	Ignored.

Details

The function is.connected is generic. This is the method for point patterns (objects of class "ppp").

The point pattern X is first converted into an abstract graph by joining every pair of points that lie closer than R units apart. Then the algorithm determines whether this graph is connected.

That is, the result of is.connected(X) is TRUE if any point in X can be reached from any other point, by a series of steps between points of X, each step being shorter than R units in length.

Value

A logical value.

Author(s)

\spatstatAuthors

See Also

is.connected, connected.ppp.

Examples

  is.connected(redwoodfull, 0.1)
  is.connected(redwoodfull, 0.2)

spatstat.geom documentation built on Sept. 18, 2024, 9:08 a.m.