Given a set of cartesian coordinates representing an object's trajectory, this function returns approximated instantaneous angular speed computed as the difference between successive headings divided by the time between these successive headings.

angSpeed(x, y, t, geo = FALSE)

Arguments

x

A vector of x (or longitude) coordinates corresponding to a single animal trajectory.

y

A vector of y (or latitude) coordinates corresponding to a single animal trajectory.

t

A vector of timestamps corresponding to a single animal trajectory.

geo

A logical value indicating whether the locations are defined by geographic coordinates (pairs of longitude/latitude values). Default: FALSE.

Value

A vector of the same length as x, y and t corresponding to approximated instantaneous angular speed along a [x, y] trajectory.

See also

Examples

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