% 
% Written by:
% -- 
% John L. Weatherwax                2005-08-04
% 
% email: wax@alum.mit.edu
% 
% Please send comments and especially bug reports to the
% above email address.
% 
% Epage 
% 
%-----

close all; clc; clear; 

X = [ 1, 2, 1; 0, 1, 1; 2, 1, 2 ];

% Construct the DCT matrix C by hand:
%
C = mk_DCT_matrix_C(size(X,1));

Y = C' * X * C;
Y