Animal Trajectory Analysis
A general purpose progress bar that reports elapsed time rather than n...
Add Trajectory lines to a plot
Plot method for direction autocorrelation
Plot method for trajectories
Plot method for trajectory speed intervals
Add Trajectory points to a plot
3D Trajectory distance
Create a 3D Trajectory Object
3D trajectory length
Resample a 3D trajectory to a constant step length
Resample a 3D trajectory to a constant time interval
Smooth a 3D trajectory using a Savitzky-Golay filter
3D trajectory step lengths
Straightness of a 3D Trajectory
Approximates the acceleration of a trajectory
Turning angles of a Trajectory
Converts a delimited time string to a numeric value
First direction autocorrelation minimum/maximum
Calculates trajectory speed and change of speed
Directional change (DC)
Direction autocorrelation
Trajectory distance
Trajectory duration
Trajectory straightness index, E-max
Trajectory expected square displacement
Fractal dimension of a trajectory
Fractal dimension calculation
Create a Trajectory Object
Create a trajectory from a subset of another
Generate a random trajectory
Trajectory frames-per-second
Trajectory number of coordinates
Trajectory temporal units
Trajectory spatial units
Test whether each of the points in a trajectory lie inside a polygon
Trajectory length
Logarithmically spaced sequence
Mean vector of turning angles
Trajectory mean velocity
Combine multiple trajectories into a single whole trajectory
trajr: Animal Trajectory Analysis
Resample a trajectory to a constant step length
Resample a trajectory to a constant time interval.
Reverse a trajectory
Rotate a trajectory
Construct multiple trajectories
Scale a trajectory
Sinuosity of a trajectory
Sinuosity of a trajectory
Merge trajectory characteristics
Smooth a trajectory using a Savitzky-Golay filter
Calculate speed time intervals
Split a trajectory into multiple sections
Split a trajectory into two parts, separated at the first boundary cro...
Replace NAs in a data frame
Step lengths of multiple trajectories
Trajectory step lengths
Straightness of a Trajectory
Translate a trajectory
Velocity of a trajectory
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>.