R: Check Whether Image Contains NA Values

anyNA.im {spatstat.geom} | R Documentation

## Check Whether Image Contains NA Values

### Description

Checks whether any pixel values in a pixel image are `NA` (meaning that the pixel lies outside the domain of definition of the image).

### Usage

      ## S3 method for class 'im'
    anyNA(x, recursive = FALSE)

### Arguments

`x` | A pixel image (object of class `"im"`).
`recursive` | Ignored.

### Details

The function `anyNA` is generic: `anyNA(x)` is a faster alternative to `any(is.na(x))`.

This function `anyNA.im` is a method for the generic `anyNA` defined for pixel images. It returns the value `TRUE` if any of the pixel values in `x` are `NA`, and and otherwise returns `FALSE`.

### Value

A single logical value.

### Author(s)

Adrian Baddeley Adrian.Baddeley@curtin.edu.au, Rolf Turner r.turner@auckland.ac.nz and Ege Rubak rubak@math.aau.dk.

### See Also

`im.object`

### Examples

      anyNA(as.im(letterR))

[Package spatstat.geom version 2.2-0 Index]