Density values of a Dirichlet distribution: Density values of a Dirichlet distribution
Description
Density values of a Dirichlet distribution.
Usage
ddiri(x, a, logged = TRUE)
Arguments
x
A matrix containing compositional data. This can be a vector or a matrix with the data.
a
A vector of parameters. Its length must be equal to the number of components,
or columns of the matrix with the compositional data and all values must be
greater than zero.
logged
A boolean variable specifying whether the logarithm of the density values to
be returned. It is set to TRUE by default.
Value
A vector with the density values.
Details
The density of the Dirichlet distribution for a vector or a matrix of compositional
data is returned.
References
Ng Kai Wang, Guo-Liang Tian and Man-Lai Tang (2011).
Dirichlet and related distributions: Theory, methods and applications.
John Wiley & Sons.