 Usage:  omega = omegagen(coeff,gam,phi,sigma,h)  
 
 Input:

  coeff                  matrix, the coefficients 
                         
  gam                    matrix 
                         
  phi                    matrix 
                         
  sigma                  vector, standard error 
                         
  h                      integer, forecast horizon 
                         
 Output:

  omega                  matrix 
                         
--------------------------------------------------------------
(C) MD*TECH Method and Data Technologies, 17.8.2000
