Hi R-Community, I estimated a VARMA model with bft in dse1 without input: A(L)yt = B(L)et I got the auto-regressive polynomial array A and the moving-average polynomial array B, but how can I access the covariances of the white noise et (disturbance vector), e.g. for simulation? Much thanks in advance, Hagen Schmoeller -- Dipl.-Ing. Hagen K. Schm??ller Leiter Forschungsgruppe Stromerzeugung und -handel Institut f??r Elektrische Anlagen und Energiewirtschaft, RWTH Aachen Schinkelstra??e 6, D-52056 Aachen, Germany Tel.: +49 (0)241 80-96734 Fax : +49 (0)241 80-92197 Hagen.Schmoeller at iaew.rwth-aachen.de