modalDirection: Estimate the modal direction
In circglmbayes: Bayesian Analysis of a Circular GLM

Description Usage Arguments Details Value Examples

Estimates the mode as the midpoint of the highest density interval.

1	modalDirection(th, modebw = 0.1)

`th`	A vector of angles in radians.
`modebw`	Numeric between 0 and 1. The modes are estimated by taking the midpoint of a highest density interval. Specifically, the mode is the midpoint of the interval that contains `modebw` of the values of `th`. Reasonable values are roughly between .005 and .2, although lower values may be reasonable there are a lot of observations in `th`.

The highest density interval is computed as the shortest interval containing modebw of the values in th. For circular data however, this definition is not useful, and we should instead look for the shortest arc that contains modebw of the data. This is done by rotating the data such that the mean direction is pi, and then applying the usual linear methods.

An angle in radians.