Animal Trajectory Analysis

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Documentation for package ‘trajr’ version 1.5.1

• DESCRIPTION file.
• User guides, package vignettes and other documentation.
• Package NEWS.

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