R: A measure of deviation for Circular Data

angular.deviation {circular} | R Documentation

## A measure of deviation for Circular Data

### Description

Returns the square root of twice one minus the mean resultant length divided by the sample size of a vector of circular data.

### Usage

    angular.deviation(x, na.rm = FALSE)

### Arguments

`x` | a vector. The object is coerced to class `circular`.
`na.rm` | logical, indicating if `NA`'s should be omitted.

### Value

Returns the square root of twice one minus the mean resultant length divided by the sample size.

### Author(s)

Claudio Agostinelli

### References

Batchelet, E. (1981) Circular Statistics in Biology. Academic Press, London.

Jammalamadaka, S. Rao and SenGupta, A. (2001). Topics in Circular Statistics, Section 1.3, World Scientific Press, Singapore.

Zar, J.H. (2010) Biostatistical Analysis. Fifth edition. Pearson Educational International.

### See Also

`sd.circular`, `angular.variance`, `mean.circular`, `rho.circular` and `summary.circular`.

### Examples

    x <- rvonmises(n=100, mu=circular(0), kappa=1)
    angular.deviation(x)

[Package circular version 0.4-93 Index]