R: Animal Trajectory Analysis

# Animal Trajectory Analysis

## Documentation for package ‘trajr’ version 1.5.1

- DESCRIPTION file
- User guides, package vignettes and other documentation
- Package NEWS
- Package README

## Help Pages

ElapsedTimeProgressBarFn | A general purpose progress bar that reports elapsed time rather than number of items
lines.Trajectory | Add Trajectory lines to a plot
plot.TrajDirectionAutocorrelations | Plot method for direction autocorrelation
plot.Trajectory | Plot method for trajectories
plot.TrajSpeedIntervals | Plot method for trajectory speed intervals
points.Trajectory | Add Trajectory points to a plot
Traj3DDistance | 3D Trajectory distance
Traj3DFromCoords | Create a 3D Trajectory Object
Traj3DLength | 3D trajectory length
Traj3DRediscretize | Resample a 3D trajectory to a constant step length
Traj3DResampleTime | Resample a 3D trajectory to a constant time interval
Traj3DSmoothSG | Smooth a 3D trajectory using a Savitzky-Golay filter
Traj3DStepLengths | 3D trajectory step lengths
Traj3DStraightness | Straightness of a 3D Trajectory
TrajAcceleration | Approximates the acceleration of a trajectory
TrajAngles | Turning angles of a Trajectory
TrajConvertTime | Converts a delimited time string to a numeric value
TrajDAFindFirstMaximum | First direction autocorrelation minimum/maximum
TrajDAFindFirstMinimum | First direction autocorrelation minimum/maximum
TrajDAMinMax | First direction autocorrelation minimum/maximum
TrajDerivatives | Calculates trajectory speed and change of speed
TrajDirectionalChange | Directional change (DC)
TrajDirectionAutocorrelations | Direction autocorrelation
TrajDistance | Trajectory distance
TrajDuration | Trajectory duration
TrajEmax | Trajectory straightness index, E-max
TrajExpectedSquareDisplacement | Trajectory expected square displacement
TrajFractalDimension | Fractal dimension of a trajectory
TrajFractalDimensionValues | Fractal dimension calculation
TrajFromCoords | Create a Trajectory Object
TrajFromTrjPoints | Create a trajectory from a subset of another
TrajGenerate | Generate a random trajectory
TrajGetFPS | Trajectory frames-per-second
TrajGetNCoords | Trajectory number of coordinates
TrajGetTimeUnits | Trajectory temporal units
TrajGetUnits | Trajectory spatial units
TrajInPolygon | Test whether each of the points in a trajectory lie inside a polygon
TrajLength | Trajectory length
TrajLogSequence | Logarithmically spaced sequence
TrajMeanVectorOfTurningAngles | Mean vector of turning angles
TrajMeanVelocity | Trajectory mean velocity
TrajMerge | Combine multiple trajectories into a single whole trajectory
TrajRediscretize | Resample a trajectory to a constant step length
TrajResampleTime | Resample a trajectory to a constant time interval.
TrajReverse | Reverse a trajectory
TrajRotate | Rotate a trajectory
TrajsBuild | Construct multiple trajectories
TrajScale | Scale a trajectory
TrajSinuosity | Sinuosity of a trajectory
TrajSinuosity2 | Sinuosity of a trajectory
TrajsMergeStats | Merge trajectory characteristics
TrajSmoothSG | Smooth a trajectory using a Savitzky-Golay filter
TrajSpeedIntervals | Calculate speed time intervals
TrajSplit | Split a trajectory into multiple sections
TrajSplitAtFirstCrossing | Split a trajectory into two parts, separated at the first boundary crossing
TrajsStatsReplaceNAs | Replace NAs in a data frame
TrajsStepLengths | Step lengths of multiple trajectories
TrajStepLengths | Trajectory step lengths
TrajStraightness | Straightness of a Trajectory
TrajTranslate | Translate a trajectory
TrajVelocity | Velocity of a trajectory