ElapsedTimeProgressBarFn
                        A general purpose progress bar that reports
                        elapsed time rather than number of items
TrajAngles              Turning angles of a Trajectory
TrajConvertTime         Converts a delimited time string to a numeric
                        value
TrajDAMinMax            First direction autocorrelation minimum/maximum
TrajDerivatives         Calculates trajectory speed and linear
                        acceleration
TrajDirectionAutocorrelations
                        Direction autocorrelation
TrajDirectionalChange   Directional change (DC)
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
TrajGenerate            Generate a random trajectory
TrajGetFPS              Trajectory frames-per-second
TrajGetNCoords          Trajectory number of coordinates
TrajGetTimeUnits        Trajectory temporal units
TrajGetUnits            Trajectory spatial units
TrajLength              Trajectory length
TrajLogSequence         Logarithmically spaced sequence
TrajMeanVectorOfTurningAngles
                        Mean vector of turning angles
TrajMeanVelocity        Trajectory mean velocity
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
TrajScale               Scale a trajectory
TrajSinuosity           Sinuosity of a trajectory
TrajSinuosity2          Sinuosity of a trajectory
TrajSmoothSG            Smooth a trajectory using a Savitzky-Golay
                        filter
TrajSpeedIntervals      Calculate speed time intervals
TrajStepLengths         Trajectory step lengths
TrajStraightness        Straightness of a Trajectory
TrajTranslate           Translate a trajectory
TrajsBuild              Construct multiple trajectories
TrajsMergeStats         Merge trajectory characteristics
TrajsStatsReplaceNAs    Replace NAs in a data frame
TrajsStepLengths        Step lengths of multiple trajectories
lines.Trajectory        Add Trajectory lines to a plot
plot.TrajDirectionAutocorrelations
                        Plot method for direction autocorrelation
plot.TrajSpeedIntervals
                        Plot method for trajectory speed intervals
plot.Trajectory         Plot method for trajectories
points.Trajectory       Add Trajectory points to a plot
trajr                   trajr: trajectory analysis in R
