TrajRotate

Rotates a trajectory by <code>angle</code> (when <code>relative</code> is <code>FALSE</code>),
or so that <code>angle(finish - start) == angle</code> (when <code>relative</code> is
<code>TRUE</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

TrajRotate function

<dl><dt>trj</dt>
<dd>The trajectory to be rotated.</dd>
<dt>angle</dt>
<dd>The angle of rotation in radians. Either the first and last
points in the rotated trajectory (when <code>relative = TRUE</code>), or else the
angle be rotated (when <code>relative = FALSE</code>).</dd>
<dt>origin</dt>
<dd>Trajectory is rotated about this point.</dd>
<dt>relative</dt>
<dd>If TRUE, <code>angle</code> is the angle (after rotation) from the
start to the end point of the trajectory. If FALSE, the trajectory is
rotated about its start point by <code>angle</code>. You probably want to use
<code>relative = TRUE</code>.</dd></dl>

Arguments

Rotate a trajectory — TrajRotate

<dl>

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


<dt>angle</dt>
<dd>The angle of rotation in radians. Either the first and last
points in the rotated trajectory (when <code>relative = TRUE</code>), or else the
angle be rotated (when <code>relative = FALSE</code>).</dd>


<dt>origin</dt>
<dd>Trajectory is rotated about this point.</dd>


<dt>relative</dt>
<dd>If TRUE, <code>angle</code> is the angle (after rotation) from the
start to the end point of the trajectory. If FALSE, the trajectory is
rotated about its start point by <code>angle</code>. You probably want to use
<code>relative = TRUE</code>.</dd>

</dl>

TrajRotate: Rotate a trajectory

Description

Usage

Value

Arguments