%
%  This file processes the data from the first trial
%
function data = process_data_3carts;
%
%  enter the data as 
%       frequency        input (in volts)    output amplitude (in counts) for X1 X2 X3; 
%
%  such as 
%
%  measured = [1.00 1.50 1740 1500 2500;
%              2.00 1.50 2300 1500 2800;
%              2.50 0.50 1100   0  1000];
%

  measured = [ ];
%
% be sure the row are sorted by frequency
%
  measured = sortrows(measured,1);
%
%  get the magnitude of the transfer function
%
  H1 = measured(:,3)./measured(:,2);
  H2 = measured(:,4)./measured(:,2);
  H3 = measured(:,5)./measured(:,2);
  f = measured(:,1); 
  data = [f H1 H2 H3];
%
  return;