tibble (>= 2.1.3), ggplot2 (>= 3.0.0), lubridate, TMB (>=
1.7.15), sf (>= 0.9-4), stringr, tidyr, future (>= 1.13.0),
furrr (>= 0.1.0), rworldmap, parallel, purrr, dplyr (>= 1.0.0),
trip, assertthat, wesanderson, patchwork

c(
person(given = "Ian",
family = "Jonsen",
role = c("aut", "cre", "cph"),
email = "ian.jonsen@mq.edu.au"),
person(given = "Toby",
family = "Patterson",
role = c("aut", "ctb"),
email = "toby.patterson@csiro.au")
)
Fits continuous-time random walk and correlated random walk state-space models for quality control animal tracking data ('Argos', processed light-level 'geolocation', 'GPS'). Template Model Builder ('TMB') is used for fast estimation. The 'Argos' data can be: (older) least squares-based locations; (newer) Kalman filter-based locations with error ellipse information; or a mixture of both. The models estimate two sets of location states corresponding to: 1) each observation, which are (usually) irregularly timed; and 2) user-specified time intervals (regular or irregular). Latent variable models are provided to estimate move persistence along tracks as an index of behaviour. Track simulation functions are provided. 'Jonsen I', 'McMahon CR', 'Patterson TA', 'Auger-Méthé M', 'Harcourt R', 'Hindell MA', 'Bestley S' (2019) Movement responses to environment: fast inference of variation among southern elephant seals with a mixed effects model. Ecology 100:e02566 <doi:10.1002/ecy.2566>.
tibble (>= 2.1.3), ggplot2 (>= 3.0.0), lubridate, TMB (>=
1.7.15), sf (>= 0.9-4), stringr, tidyr, purrr, dplyr (>=
1.0.0), trip, assertthat, patchwork, future, furrr, CircStats,
mvtnorm, tmvtnorm, parallel, lifecycle
testthat, covr, knitr, rmarkdown, rgeos, rworldmap

A Self-Describing Dataset Format and Interface
Defines a compact data format that includes metadata.
The function fold() creates the format by converting
from data.frame, and unfold() converts back. The predictability
of the folded format supports reusability of data processing tools,
while the presence of embedded metadata improves portability,
interpretability, and efficiency.