Move-class: The Move class

Description

The Move object contains at least time and coordinate information of an animal. It can contain further data that are specific to the animal, e.g. the sex or age, which are stored in the idData slot data.frame. Any data associated to the coordinates are stored in the data slot data.frame. If the object was created with the Movebank browsing functions it also contains the study name, licence and citation information.
A Move object can be created with the functions move, getMovebankData or getDataRepositoryData.

Arguments

Slots

bbox: belongs to the SpatialPointsDataFrame
citation: Object of class "character": how to cite the study, when Movebank data are used
coords: coordinates of the track, belongs to the SpatialPointsDataFrame
coords.nrs: belongs to the SpatialPointsDataFrame
data: Object of class "data.frame": additional data associated to the coordinates
dataUnUsedRecords: Object of class "data.frame": data associated to the unused records
dateCreation: Object of class "POSIXct": timestamp when the Move object was created
idData: Object of class "data.frame": additional (one row) data. These data contain information associated to the animal
license: Object of class "character": the license under which the data were published, when Movebank data are used
proj4string: Object of class "CRS": projection of the coordinates
sensor: Object of class "factor": sensors used to record the coordinates
sensorUnUsedRecords: Object of class "factor": sensors used to record the unused records
study: Object of class "character": name of the study, when Movebank data are used
timestamps: Object of class "POSIXct": timestamps associated to the coordinates
timestampsUnUsedRecords: Object of class "POSIXct": timestamps associated to the unused records, i.e. lines of the data that were removed because they included NA locations

Methods

angle: signature(object = "Move"): calculates angles between consecutive locations
as.data.frame: signature(object = "Move"): extracts the spatial data frame
brownian.bridge.dyn: signature(object = "Move"): calculates the utilization distribution (UD) of the given track using the dynamic Brownian Bridge Movement Model
brownian.motion.variance.dyn: signature(object = "Move"): calculates the motion variance of the dynamic Brownian Bridge Movement Model
burst: signature(object = "Move"): bursts a track by a specified variable
citations: signature(object = "Move"): extracts or sets the citation
coordinates: signature(object = "Move"): extracts the coordinates from the track
corridor: signature(object = "Move"): identifies track segments whose attributes suggest corridor use behavior
distance: signature(object = "Move"): calculates distances between consecutive locations
dynBGB: signature(object = "Move"): calculates the utilization distribution (UD) of the given track using the dynamic Bivariate Gaussian Bridge model
dynBGBvariance: signature(object = "Move"): calculates the orthogonal and parallel motion variance of the dynamic Brownian Bridge Movement Model
equalProj: signature(object = "Move"): checks whether all objects of a list are in the same projection
hrBootstrap: signature(object = "Move"): calculates and plots the area of the Minimum Convex Polygon of a track
idData: signature(object = "Move"): returns or replaces the idData slot
interpolateTime: signature(object = "Move"): interpolates trajectories based on time
lines: signature(object = "Move"): add lines of the track of the animal to a plot
move2ade: signature(object = "Move"): converts to a adehabitat compatible object
moveStack: signature(object = "Move"): stacks a list of Move objects
n.locs: signature(object = "Move"): calculates number of locations
plot: signature(object = "Move"): plots the track of the animal
points: signature(object = "Move"): add points of the track of the animal to a plot
seglength: signature(object = "Move"): calculates the length of each segment of a track
sensor: signature(object = "Move"): extracts the sensor(s) used to record the coordinates
show: signature(object = "Move"): displays summary the Move object
speed: signature(object = "Move"): calculates speed between consecutive locations
spTransform: signature(object = "Move"): transforms coordinates to a different projection method
summary: signature(object = "Move"): summarizes the information of Move object
subset: signature(object = "Move"): subsets the Move object
timeLag: signature(object = "Move"): calculates time lag between consecutive locations
timestamps: signature(object = "Move"): gets the timestamps associated to the coordinates
turnAngleGc: signature(object = "Move"): calculates angles between consecutive locations
unUsedRecords: signature(object = "Move"): returns the unUsedRecords object containing the data of the unused records

Author

Marco Smolla & Anne Scharf