[W,List] = ifrf(M,Freq,...)
M [ model ] - Model object for which the frequency response function will be computed.
Freq [ numeric ] - Vector of frequencies for which the response function will be computed.
W [ namedmat | numeric ] - Array with frequency responses of transition variables (in rows) to shocks (in columns).
List [ cell ] - List of transition variables in rows of the W matrix, and list of shocks in columns of the W matrix.
'matrixFmt=' [ 'namedmat' | 'plain' ] - Return matrix W as either a namedmat object (i.e. matrix with named rows and columns) or a plain numeric array.
'select=' [ @all | char | cellstr ] - Return IFRF for selected variables only; @all means all variables.