1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
\name{Cardioid}
\title{Cardioid Density Function}
\alias{dcardioid}
\alias{rcardioid}
\description{
Density and random generation for the Cardioid circular distribution.
}
\usage{
dcardioid(x, mu = circular(0), rho = 0)
rcardioid(n, mu = circular(0), rho = 0, control.circular=list())
}
\arguments{
\item{x}{a vector. The object is coerced to class \code{\link{circular}}.}
\item{n}{number of observations.}
\item{mu}{mean direction of the distribution. The object is coerced to class \code{\link{circular}}.}
\item{rho}{concentration parameter of the distribution. Absolute value of \code{rho} must be less than 0.5.}
\item{control.circular}{the coordinate system used in the output of \code{rcardioid}. See \code{\link{circular}} for details.}
}
\value{
\code{dcardioid} gives the density and \code{rcardioid} generates random deviates.
}
\author{Claudio Agostinelli and Ulric Lund}
\references{
Jammalamadaka, S. Rao and SenGupta, A. (2001). Topics in Circular Statistics, Section 2.2.2, World Scientific Press, Singapore.
}
\examples{
set.seed(1234)
resrad <- rcardioid(n=10)
set.seed(1234)
resdeg <- rcardioid(n=10, control.circular=list(units="radians", zero=pi))
max(abs(resrad - conversion.circular(resdeg, zero=0)))
}
\keyword{distribution}
|
