[C,R] = acf(V,...)
V [ VAR ] - VAR object for which the ACF will be computed.C [ namedmat | numeric ] - Auto/cross-covariance matrices.
R [ namedmat | numeric ] - Auto/cross-correlation matrices.
'applyTo=' [ logical | @all ] - Logical index of variables to which the 'filter=' will be applied; @all means all variables.
'filter=' [ char | empty ] - Linear filter that is applied to variables specified by 'applyto'.
'matrixFmt=' [ 'namedmat' | 'plain' ] - Return matrices C and R as either namedmat objects (i.e. matrices with named rows and columns) or plain numeric arrays.
'nFreq=' [ numeric | 256 ] - Number of equally spaced frequencies over which the 'filter=' is numerically integrated.
'order=' [ numeric | 0 ] - Order up to which ACF will be computed.
'progress=' [ true | false ] - Display progress bar in the command window.