is.na.solist {spatstat.geom} | R Documentation |
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 class 'solist'
is.na(x)
Arguments
x |
A list of spatial objects (an object of class |
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).
Value
A logical vector with the same length as x
.
Author(s)
Adrian Baddeley Adrian.Baddeley@curtin.edu.au and Ege Rubak rubak@math.aau.dk.
See Also
Examples
B <- solist(cells, NA, cells)
B[[2]]
is.na(B)
V <- solist(cells, Window(cells), NAobject("im"))
is.na(V)
[Package spatstat.geom version 3.5-0 Index]