is.na.solist: Identify Missing Entries in a List of Spatial Objects
Description
Given a list of spatial objects (of class "solist"),
this function returns a logical vector
specifying which entries of the list are missing.
Usage
# S3 method for solist
is.na(x)
Arguments
Value
A logical vector with the same length as x.
Details
This function returns a logical vector with the same length
as the list x, with the value TRUE
in each position where the corresponding entry in the list
is missing.
An entry x[[i]] is deemed to be missing if it is
an object of class "NAobject" (representing a missing
object of a particular class in the spatstat package family).