Learn R Programming

gmvarkit (version 1.4.1)

VAR_pcovmat: Calculate the dp-dimensional covariance matrix of p consecutive observations of a VAR process

Description

VAR_pcovmat calculate the dp-dimensional covariance matrix of p consecutive observations of a VAR process with the algorithm proposed by McElroy (2017).

Usage

VAR_pcovmat(p, d, all_Am, Omega_m)

Arguments

p

a positive integer specifying the autoregressive order of the model.

d

the number of time series in the system.

all_Am

[d, d, p] array containing the AR coefficient matrices

Omega_m

the dxd error term covariance matrix

Value

Returns the (dp x dp) covariance matrix.

Details

Most of the code in this function is adapted from the one provided in the supplementary material of McElroy (2017). Reproduced under GNU General Public License, Copyright (2015) Tucker McElroy.

References

  • McElroy T. 2017. Computation of vector ARMA autocovariances. Statistics and Probability Letters, 124, 92-96.