cyl_vonmises-class {cylcop}

An S4 Class of Bivariate von Mises Copulas

Description

This class contains circular-linear copulas that are based on the approach by Johnson and Wehrly (1978) with a von Mises periodic function. They are periodic in the circular dimension, u, but not symmetric with respect to u=0.5 i.e. there is no symmetry between positive and negative angles.

Slots

name

character string holding the name of the copula.

parameters

numeric vector holding the parameter values.

param.names

character vector holding the parameter names.

param.lowbnd

numeric vector holding the lower bounds of the parameters.

param.upbnd

numeric vector holding the upper bounds of the parameters.

flip

logical value indicating whether the copula should be rotated 90 degrees to capture negative correlation.

Objects from the Class

Objects are created by cyl_vonmises().

Extends

Class 'cyl_vonmises' extends class 'cyl_copula'.

References

Johnson RA, Wehrly TE (1978). “Some Angular-Linear Distributions and Related Regression Models.” Journal of the American Statistical Association ISSN:, 73(363), 602–606. ISSN 00401706, doi:10.2307/1270921.

Hodel FH, Fieberg JR (2022). “Circular-Linear Copulae for Animal Movement Data.” Methods in Ecology and Evolution. doi:10.1111/2041-210X.13821.

Hodel FH, Fieberg JR (2021). “Cylcop: An R Package for Circular-Linear Copulae with Angular Symmetry.” bioRxiv. doi:10.1101/2021.07.14.452253, https://www.biorxiv.org/content/10.1101/2021.07.14.452253v3/.