is.NAobject {spatstat.geom}R Documentation

Recognise NA Objects

Description

Recognises whether an object is an NA object (representing a missing or unavailable object in the spatstat package family).

Usage

  is.NAobject(x)

Arguments

x

An object.

Details

This function recognises whether an object is a missing or unavailable object belonging to one of the classes in the spatstat package family.

In spatstat, a missing or unavailable object of class "foo" is represented by an object that inherits the classes "foo" and "NAobject".

For any object x, the command is.NAobject(x) will return TRUE if x is a missing or unavailable object, and FALSE otherwise.

Value

A single logical value.

Author(s)

Adrian Baddeley Adrian.Baddeley@curtin.edu.au and Ege Rubak rubak@math.aau.dk.

See Also

NAobject

Examples

   A <- NAobject("ppp")
   is.NAobject(A)

   X <- solist(cells, NA, cells)
   is.NAobject(X[[2]])
   sapply(X, is.NAobject)

[Package spatstat.geom version 3.5-0 Index]