[F,X] = fmse(V,NPer)
[F,X] = fmse(V,Range)
V [ VAR ] - VAR object for which the forecast MSE matrices will be computed.
NPer [ numeric ] - Number of periods.
Range [ numeric ] - Date range.
F [ namedmat | numeric ] - Forecast MSE matrices.
X [ dbase | tseries ] - Database or tseries with the std deviations of individual variables, i.e. the square roots of the corresponding diagonal elements of M.
'matrixFmt=' [ 'namedmat' | 'plain' ] - Return matrix F as either a namedmat object (i.e. matrix with named rows and columns) or a plain numeric array.