position: Evaluate position parameters at the given times

In moveBB: Analysis of Trajectory Data using Linear or Brownian Motion Model

Description

Given a trajectory of class bbtraj and a list of date/times (as timestamps or objects of class POSIXct), this function computes the distribution parameters of the position for each group in the trajectory at each of the requested times. The distribution parameters are the mean location and the variance of the location.

Usage

position(tr, time)

Arguments

tr	An object of class bbtraj
time	A list of date/times at which to evaluate the position parameters.

Details

If a requested time does not have a relocation, the values are interpolated in the usual way for the Brownian bridge movement model.

Value

An array indexed by ID, parameter name, time.

See Also

bbtraj

Examples

data("vervet_monkeys", package="moveBB")

position(monkey.tr, as.POSIXct(c("2011-01-19 08:30:00")))

## , , 1295422200
##
##           x       y      var
## BD 322487.6 6900484 1133.653
## NH 323012.9 6900720 1192.534

moveBB documentation built on May 2, 2019, 5:50 p.m.