R: Cardioid Density Function

Cardioid {circular} | R Documentation

## Cardioid Density Function

### 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)))

[Package circular version 0.4-93 Index]