Takes parameters for a multivariate normal distribution and observed values to calculate the conditional distribution for the unobserved values.
get_conditional_parameters(pars, values)A list with the conditional distribution parameters:
mu - The conditional mean vector.
sigma - The conditional covariance matrix.
a list with elements mu and sigma defining the mean vector and
covariance matrix respectively.
a vector of observed values to condition on, must be same length as pars$mu.
Missing values must be represented by an NA.