is.connected

0th

Percentile

Determine Whether an Object is Connected

Determine whether an object is topologically connected.

Keywords
spatial, math
Usage
is.connected(X, …)

# S3 method for default is.connected(X, …)

# S3 method for linnet is.connected(X, …)

Arguments
X

A spatial object such as a pixel image (object of class "im"), a window (object of class "owin") or a linear network (object of class "linnet").

Arguments passed to connected to determine the connected components.

Details

The command is.connected(X) returns TRUE if the object X consists of a single, topologically-connected piece, and returns FALSE if X consists of several pieces which are not joined together.

The function is.connected is generic. The default method is.connected.default works for many classes of objects, including windows (class "owin") and images (class "im"). There is a method for linear networks, is.connected.linnet, described here, and a method for point patterns described in is.connected.ppp.

Value

A logical value.

See Also

connected, is.connected.ppp.

Aliases
  • is.connected
  • is.connected.default
  • is.connected.linnet
Examples
# NOT RUN {
  d <- distmap(cells, dimyx=256)
  X <- levelset(d, 0.07)
  plot(X)
  is.connected(X)
# }
Documentation reproduced from package spatstat, version 1.55-1, License: GPL (>= 2)

Community examples

Looks like there are no examples yet.