Computation of various Markovian models for categorical data
including homogeneous Markov chains of any order, MTD models, Hidden Markov
models, and Double Chain Markov Models.
Ogier Maitre, with contributions from Andre Berchtold and Oliver Buschor

Ogier Maitre, with contributions from Andre Berchtold, Kevin Emery and Oliver Buschor

Ogier Maitre and Kevin Emery, with contributions from Oliver Buschor and Andre Berchtold

Migration and Range Change Estimation in R
c(person("Eliezer", "Gurarie", role = c("aut", "cre"), email = "egurarie@umd.edu"), person("Farid", "Cheraghi", role = "aut"))
A set of tools for likelihood-based estimation, model selection and testing of two- and three-range shift and migration models for animal movement data as described in Gurarie et al. (2017) <doi: 10.1111/1365-2656.12674>.  Provided movement data (X, Y and Time), including irregularly sampled data, functions estimate the time, duration and location of one or two range shifts, as well as the ranging area and auto-correlation structure of the movment.  Tests assess, for example, whether the shift was "significant", and whether a two-shift migration was a true return migration.
stats, Matrix, graphics, grDevices, plyr, mvtnorm,
RColorBrewer, minpack.lm, zoo, numDeriv, magrittr, scales
Eliezer Gurarie [aut, cre],
Farid Cheraghi [aut]

Datasets, constants, conversion factors, utilities for the marine and lacustrine sciences
Karline Soetaert <k.soetaert@nioo.knaw.nl>,
Filip Meysman <filip.meysman@vub.ac.be>
R (>= 2.01), shape, deSolve, rootSolve, scatterplot3d, seacarb
Datasets, chemical and physical constants and functions, routines for unit conversions, etc, for the marine and lacustrine sciences

Karline Soetaert <k.soetaert@nioo.knaw.nl>, Thomas Petzoldt
<thomas.petzoldt@tu-dresden.de>, Filip Meysman
<filip.meysman@vub.ac.be>
Datasets, constants, conversion factors, utilities for
MArine, Riverine, Estuarine, LAcustrine and Coastal science.
The package contains among others: (1) chemical and physical
constants and datasets, e.g. atomic weights, gas constants, the
earths bathymetry; (2) conversion factors (e.g. gram to mol to
liter, barometric units, temperature, salinity); (3) physical
functions, e.g. to estimate concentrations of conservative
substances, gas transfer and diffusion coefficients, the
Coriolis force and gravity; (4) thermophysical properties of
the seawater, as from the UNESCO polynomial or from the more
recent derivation based on a Gibbs function.