R: Rotate a Pixel Image

rotate.im {spatstat.geom} | R Documentation

## Rotate a Pixel Image

### Description

Rotates a pixel image

### Usage

     ## S3 method for class 'im'
    rotate(X, angle=pi/2, ..., centre=NULL)

### Arguments

`X` | A pixel image (object of class `"im"`).
`angle` | Angle of rotation, in radians.
`...` | Ignored.
`centre` | Centre of rotation. Either a vector of length 2, or a character string (partially matched to `"centroid"`, `"midpoint"` or `"bottomleft"`). The default is the coordinate origin `c(0,0)`.

### Details

The image is rotated by the angle specified. Angles are measured in radians, anticlockwise. The default is to rotate the image 90 degrees anticlockwise.

### Value

Another object of class `"im"` representing the rotated pixel image.

### Author(s)

Adrian Baddeley Adrian.Baddeley@curtin.edu.au

and Rolf Turner r.turner@auckland.ac.nz

### See Also

`affine.im`, `shift.im`, `rotate`

### Examples

      Z <- distmap(letterR)
      X <- rotate(Z)
      # plot(X)
      Y <- rotate(X, centre="midpoint")

[Package spatstat.geom version 2.3-2 Index]