cardioid: Cardioid Density Function

In circular: Circular Statistics

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

x	a vector. The object is coerced to class circular.
n	number of observations.
mu	mean direction of the distribution. The object is coerced to class circular.
rho	concentration parameter of the distribution. Absolute value of rho must be less than 0.5.
control.circular	the coordinate system used in the output of rcardioid. See circular for details.

Value

dcardioid gives the density and rcardioid generates random deviates.

Author(s)

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)))

Example output

Attaching package: 'circular'

The following objects are masked from 'package:stats':

    sd, var

[1] 1.595946e-16

circular documentation built on May 2, 2019, 4:42 p.m.