ddirichlet {MCMCpack} | R Documentation |
Functions to compute the density of the Dirichlet distribution.
ddirichlet(x, alpha)
x |
A vector containing a single deviate or matrix containing one random deviate per row. |
alpha |
Vector of shape parameters, or matrix of shape parameters corresponding to each row above. |
The Dirichlet distribution is the multidimensional generalization of the beta distribution.
ddirichlet
returns a vector containing the evaluated Dirichlet
density for the corresponding rows of x
.
Code is taken from Greg's Miscellaneous Functions (gregmisc). His code was based on code posted by Ben Bolker to R-News on Fri Dec 15 2000.
ddirichlet(c(.1,.2,.7), c(1,1,1))