This function returns the log-density for a multivariate Gaussian distribution. The data must be imputed as a matrix, using e.g., as.matrix, with each row representing an observation.
.dmvnorm_arma(x, mu, sigma, logd =FALSE)
Arguments
x: matrix of observations
mu: mean vector
sigma: positive definite covariance matrix
logd: logical; whether log-density should be returned (default to FALSE)