hank

//Example of how to use the hank macro for 
            
            //building a Hankel matrix from multidimensional 
            
            //data (covariance or Markov parameters e.g.)
            
            //
            
            //This is used e.g. in the solution of normal equations
            
            //by classical identification methods (Instrumental Variables e.g.)
            
            //
            
            //1)let's generate the multidimensional data under the form :
            
            //  C=[c_0 c_1 c_2 .... c_n]
            
            //where each bloc c_k is a d-dimensional matrix (e.g. the k-th correlation 
            
            //of a d-dimensional stochastic process X(t) [c_k = E(X(t) X'(t+k)], ' 
            
            //being the transposition in scilab)
            
            //
            
            //we take here d=2 and n=64
            
            
            
            c = rand(2, 2 * 64)
            
            
            
            //generate the hankel matrix H (with 4 bloc-rows and 5 bloc-columns)
            
            //from the data in c
            
            
            
            H = hank(4, 5, c);