function [a,b,c,d] = sec2ss(h)
%SEC2SS  Convert single-section DF object to state-space.

%   Author(s): R. Losada
%   Copyright 1988-2000 The MathWorks, Inc.
%   $Revision: 1.3 $  $Date: 2000/06/13 21:20:43 $ 

[num,den] = tf(h);

% Construct a df1 object; den is always 1
df1obj = df1(num,1);

% Get it's state-space representation
[a,b,c,d] = sec2ss(df1obj);

