Traj3DRediscretize

Constructs a new 3-dimensional trajectory by resampling the input
3-dimensional 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>trj3d</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

Traj3DRediscretize function

<dl><dt>trj3d</dt>
<dd>The 3-dimensional 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>trj3d</code>.</dd></dl>

Arguments

Resample a 3D trajectory to a constant step length — Traj3DRediscretize

<dl>

<dt>trj3d</dt>
<dd>The 3-dimensional 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>trj3d</code>.</dd>

</dl>

Traj3DRediscretize: Resample a 3D trajectory to a constant step length

Description

Usage

Value

Arguments

Details

References

See Also