# rotate.ppp: Rotate a Point Pattern

## Description

Rotates a point pattern

## Usage

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

## Arguments

X

A point pattern (object of class `"ppp"`

).

…

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)`

.

## Value

Another object of class `"ppp"`

representing the
rotated point pattern.

## 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.

## Examples

# NOT RUN {
data(cells)
X <- rotate(cells, pi/3)
# plot(X)
# }