R: Rotate a Point Pattern

rotate.ppp {spatstat.geom} | R Documentation

## Rotate a Point Pattern

### Description

Rotates a point pattern

### Usage

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

### Arguments

`X` | A point pattern (object of class `"ppp"`).
`angle` | Angle of rotation.
`...` | Arguments passed to `rotate.owin` affecting the handling of the observation window, if it is a binary pixel mask.
`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 points of the pattern, and the window of observation, are rotated about the origin by the angle specified. Angles are measured in radians, anticlockwise. The default is to rotate the pattern 90 degrees anticlockwise. If the points carry marks, these are preserved.

### Value

Another object of class `"ppp"` representing the rotated point pattern.

### Author(s)

Adrian Baddeley Adrian.Baddeley@curtin.edu.au

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

### See Also

`ppp.object`, `rotate.owin`

### Examples

      data(cells)
      X <- rotate(cells, pi/3)
      # plot(X)

[Package spatstat.geom version 2.3-2 Index]