The Evolutionary Rate Matrix is a variance-covariance matrix which describes both the rates of trait evolution and the evolutionary correlation among multiple traits. This package has functions to estimate these parameters using Bayesian MCMC. It is possible to test if the pattern of evolutionary correlations among traits has changed between predictive regimes painted along the branches of the phylogenetic tree. Regimes can be created a priori or estimated as part of the MCMC under a joint estimation approach. The package has functions to run MCMC chains, plot results, evaluate convergence, and summarize posterior distributions.

Fit Statistical Models of Repeated Categorical Rating Data
c(person("Jeffrey", "Pullin",
role = c("aut", "cre"),
email = "jeffrey.pullin@gmail.com",
comment = c(ORCID = "0000-0003-3651-5471")),
person("Damjan", "Vukcevic",
role = c("aut"),
comment = c(ORCID = "0000-0001-7780-9586"))
)
Fit statistical models based on the Dawid-Skene model - Dawid and
Skene (1979) <doi:10.2307/2346806> - to repeated categorical rating data.
Full Bayesian inference for these models is supported through the Stan
modelling language. 'rater' also allows the user to extract and plot key
parameters of these models.
Jeffrey Pullin [aut, cre] (<https://orcid.org/0000-0003-3651-5471>),
Damjan Vukcevic [aut] (<https://orcid.org/0000-0001-7780-9586>)

Statistical Models of Repeated Categorical Rating Data
c(person("Jeffrey", "Pullin",
role = c("aut", "cre", "cph"),
email = "jeffrey.pullin@gmail.com",
comment = c(ORCID = "0000-0003-3651-5471")),
person("Damjan", "Vukcevic",
role = c("aut"),
comment = c(ORCID = "0000-0001-7780-9586"))
)
Jeffrey Pullin [aut, cre, cph]
(<https://orcid.org/0000-0003-3651-5471>),
Damjan Vukcevic [aut] (<https://orcid.org/0000-0001-7780-9586>)

c(person(given = "Jeffrey",
family = "Pullin",
role = c("aut", "cre", "cph"),
email = "jeffrey.pullin@gmail.com",
comment = c(ORCID = "0000-0003-3651-5471")),
person(given = "Damjan",
family = "Vukcevic",
role = "aut",
comment = c(ORCID = "0000-0001-7780-9586")),
person(given = "Lars Mølgaard",
family = "Saxhaug",
role = "aut",
comment = c(ORCID = "0000-0001-5084-1578")))
Fit statistical models based on the Dawid-Skene model - Dawid
and Skene (1979) <doi:10.2307/2346806> - to repeated categorical
rating data.  Full Bayesian inference for these models is supported
through the Stan modelling language. 'rater' also allows the user to
extract and plot key parameters of these models.
Jeffrey Pullin [aut, cre, cph]
(<https://orcid.org/0000-0003-3651-5471>),
Damjan Vukcevic [aut] (<https://orcid.org/0000-0001-7780-9586>),
Lars Mølgaard Saxhaug [aut] (<https://orcid.org/0000-0001-5084-1578>)