Description Usage Arguments Value Examples

Run all 10 maximum likelihood models of circular orientation

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`data` |
A vector of class 'circular' |

`criterion` |
chose from either "AIC", "AICc", or "BIC" for the model comparison information criterion. (default = "AIC") |

`nchains` |
A positive integer indicating the number of chains to run. Only the chain with the lowest log likelihood is returned (default = 5) |

`BadStart` |
An integer to replace the log likelihood when starting parameters of the optimizer fall outside the preset bounds. This is usually set to a large number. Can also be set to Inf, but will result in an error if a method other than "Nelder-Mead" is chosen. (default = 10^9) |

`niter` |
The maximum number of iterations for the optimizing algorithm. Equivalent to the 'maxit' control parameter of the optim() function. See ?optim for more details. (default = 5000) |

`method` |
A character string indicating the optimizing algorithm to use. Either "BFGS" or "Nelder-Mead" are recommended. See ?optim for more details. (default = "BFGS") |

`lambda.min` |
The minimum proportional size of the first distribution. Must be between 0 and 1. (default = 0.25) |

`q.diff` |
The minimum difference (in radians) in preferred direction for bimodal models. Must be set between 0 and pi. (default = pi/4) |

`exclude` |
A character vector of the models to be excluded from the calculations. (The default is to include all 10 models). For example, exclude = c("M1", "M3A", "M5B"). |

A list with 4 elements:

$results: A data frame consisting of a row for each model (rownames) with the columns: 1 = number of free parameters, 2 = mu1, 3 = kappa1, 4 = lamda, 5 = mu2, 6 = kappa2, 7 = negative log likelihood, 8 = Counts.function, 9 = Counts.Gradient, 10 = convergence, 11 = message, 12 = AIC, 13 = AICc, 14 = BIC, 15 = delta AIC, 16 = delta AICc, 17 = delta BIC, 18 = relative likelihoods of criterion chosen, 19 = model weights (probabilities) for criterion chosen, 20 = evidence ratios for the best model selected by the criterion. See ?optim for details on columns 8-11.

$bestmodel: The best model according to the criterion chosen

$rt: A two-element vector giving the test statistic and p-value for the Rayleigh Test

$hessians: A list with each element containing the hessian matrix for each model. Used for calculating connfidence intervals of parameters.

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