TrajRediscretize

Constructs a new trajectory by resampling the input trajectory to a
fixed step (or segment) length. By default, timing of frames is
lost, so speed and acceleration cannot be calculated on a
rediscretized trajectory. However, a constant speed may be applied
to the rediscretized trajectory (<code>simConstantSpeed = TRUE</code>),
in which case the returned trajectory will have (almost) constant
speed, with average speed approximately equal to the average speed
of <code>trj</code>.

A toolbox to assist with statistical analysis of animal trajectories.
It provides simple access to algorithms for calculating and assessing a variety of
characteristics such as speed and acceleration, as well as multiple measures of
straightness or tortuosity. Some support is provided for 3-dimensional trajectories.
McLean & Skowron Volponi (2018) <doi:10.1111/eth.12739>.

Jim McLean

trajr

Animal Trajectory Analysis

TrajRediscretize function

<dl><dt>trj</dt>
<dd>The trajectory to be resampled.</dd>
<dt>R</dt>
<dd>rediscretization step length, in the spatial units of <code>trj</code>.</dd>
<dt>simConstantSpeed</dt>
<dd>If TRUE, speeds are interpolated along the new
trajectory so that average speed is approximately the same as that of
<code>trj</code>.</dd></dl>

Arguments

Resample a trajectory to a constant step length — TrajRediscretize

<dl>

<dt>trj</dt>
<dd>The trajectory to be resampled.</dd>


<dt>R</dt>
<dd>rediscretization step length, in the spatial units of <code>trj</code>.</dd>


<dt>simConstantSpeed</dt>
<dd>If TRUE, speeds are interpolated along the new
trajectory so that average speed is approximately the same as that of
<code>trj</code>.</dd>

</dl>

TrajRediscretize: Resample a trajectory to a constant step length

Description

Usage

Value

Arguments

Details

References