simfit: simulate animal tracks from a 'fG_ssm' fit

In foieGras: Fit Continuous-Time State-Space and Latent Variable Models for Quality Control of Argos Satellite (and Other) Telemetry Data and for Estimating Movement Behaviour

Description

simulate from the rw or crw process models to generate either a set of x,y (or lon,lat) coordinates from a fG_ssm fit with length equal to the number of observations used in the SSM fit.

Usage

simfit(
  x,
  what = c("fitted", "predicted"),
  reps = 1,
  cpf = FALSE,
  sim_only = FALSE
)

Arguments

x	a compound fG_ssm model fit object (ignored if NULL)
what	simulate fitted (typically irregular in time) or predicted (typically regular in time) locations
reps	number of replicate tracks to simulate from an fG_ssm model fit object (ignored if x is NULL)
cpf	logical; should simulated tracks return to their start point (ie. a central-place forager)
sim_only	logical, do not include fG_ssm estimated location in output (default is FALSE)

Examples

fit <- fit_ssm(ellie, vmax = 4, model = "crw", time.step = 48, control = ssm_control(se = FALSE))
trs <- simfit(fit, reps = 2, what = "predicted")
plot(trs)

foieGras documentation built on April 27, 2021, 1:05 a.m.