locate_shift

time (can be a <code><a rd-options="base" href="/link/POSIXt?package=marcher&version=0.0-2&to=base" data-mini-rdoc="base::POSIXt">POSIXt</a></code>)

time

x and y coordinates.  Can be two separate vectors OR a complex &quot;x&quot; OR a two-column matrix/date-frame.

n.clust

additional parameters to pass to plot functions

Plots an x-y, time-x, time-y track of a potential migration process and prompts the user to click on the figure to obtain initial estimates of range centroids and timing of start and end of migrations.

A set of tools for likelihood-based estimation, model selection and testing of two- and three-range shift and migration models for animal movement data as described in Gurarie et al. (2017) <doi: 10.1111/1365-2656.12674>.  Provided movement data (X, Y and Time), including irregularly sampled data, functions estimate the time, duration and location of one or two range shifts, as well as the ranging area and auto-correlation structure of the movment.  Tests assess, for example, whether the shift was "significant", and whether a two-shift migration was a true return migration.

Eliezer Gurarie

marcher

Migration and Range Change Estimation in R

Farid Cheraghi

locate_shift function

time (can be a <code><a rd-options='base' href='POSIXt'>POSIXt</a></code>)

locate_shift: Interactive locating of range shifting

Description

Usage

Arguments

Value

See Also