xytb-class {m2b}

xytb class definition

Description

xytb is a trajectory object with observed behaviour

Slots

desc

a character vector. A description of the data.

xyt

a data frame of the track information. One row is one position described by 11 variables :

id:	individual id
t:	time in POSIXct
x:	longitude
y:	latitude
dt:	time (s) between the current location and the next one
dist:	distance (m) between the current location and the next one calculated using the Vincenty ellipsoid method. See distVincentyEllipsoid)
v:	speed (m.s^-1)
dx:	the increase of the move in the x direction.
dy:	the increase of the move in the y direction.
theta:	the angle between each move and the x axis.
thetarel:	the turning angle between successive moves.

This slot is very similar to the ltraj class of the adehabitatLT package.

b

a data frame of the observed behaviour related to the track. One row is one behavioural observation related to the track described by 3 variables:

id:	individual id
t:	time in POSIXct
b:	observed behaviour (character)

dxyt

a data frame of the derived variables from the track.

befdxyt

a data frame of the derived variables shifted back in time.

model

a randomForest model (see randomForest).

rfcv

the output of the cross-validation procedure (see rfcv).

predb

a data frame of the predicted behaviour using the random forest model of the slot model. 3 variables :

id:	individual id
t:	time in POSIXct
b:	observed behaviour (character)

Author(s)

Laurent Dubroca