foieGras: simfit – R documentation

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simfit

simulate animal tracks from a fG_ssm fit

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

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

v0.7-6

MIT + file LICENSE

Authors

Ian Jonsen [aut, cre, cph], Toby Patterson [aut, ctb]

Initial release

2021-04-26