The estimated variance-covariance matrix for log p.
Arguments
mu
The mean vector of the log-ratio-transformed data (ALR or CLR)
Sigma
The variance-covariance matrix of the log-ratio-transformed data (ALR or CLR)
transf
The desired transformation. If transf="alr" the inverse
additive log-ratio transformation is applied. If transf="clr" the
inverse centered log-ratio transformation is applied.
order
The desired order of the Taylor Series approximation