R: Convert Pixel Image to Function of Coordinates

as.function.im {spatstat.geom} | R Documentation

## Convert Pixel Image to Function of Coordinates

### Description

Converts a pixel image to a function of the x and y coordinates.

### Usage

     ## S3 method for class 'im'
    as.function(x, ...)

### Arguments

`x` | Pixel image (object of class `"im"`).
`...` | Ignored.

### Details

This command converts a pixel image (object of class `"im"`) to a `function(x,y)` where the arguments `x` and `y` are (vectors of) spatial coordinates. This function returns the pixel values at the specified locations.

### Value

A function in the R language, also belonging to the class `"funxy"`.

### 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`

### Examples

      d <- setcov(square(1))
      f <- as.function(d)
      f(0.1, 0.3)

[Package spatstat.geom version 2.3-2 Index]