https://github.com/cran/spatstat
Tip revision: 2bcb37fef517ce03cdd4a375eb4be390aaaacb20 authored by Adrian Baddeley on 23 June 2019, 13:40:07 UTC
version 1.60-1
version 1.60-1
Tip revision: 2bcb37f
rotate.ppp.Rd
\name{rotate.ppp}
\alias{rotate.ppp}
\title{Rotate a Point Pattern}
\description{
Rotates a point pattern
}
\usage{
\method{rotate}{ppp}(X, angle=pi/2, \dots, centre=NULL)
}
\arguments{
\item{X}{A point pattern (object of class \code{"ppp"}).}
\item{angle}{Angle of rotation.}
\item{\dots}{
Arguments passed to \code{\link{rotate.owin}} affecting
the handling of the observation window, if it is a binary pixel mask.
}
\item{centre}{
Centre of rotation.
Either a vector of length 2, or a character string
(partially matched to \code{"centroid"}, \code{"midpoint"}
or \code{"bottomleft"}).
The default is the coordinate origin \code{c(0,0)}.
}
}
\value{
Another object of class \code{"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.
}
\seealso{
\code{\link{ppp.object}},
\code{\link{rotate.owin}}
}
\examples{
data(cells)
X <- rotate(cells, pi/3)
\dontrun{
plot(X)
}
}
\author{\adrian
and \rolf
}
\keyword{spatial}
\keyword{math}