Fprintf from a text file

I have created a test example to send a signal from matlab and receive the response + plot. However the signal i want to send is much longer than the one in this example. I have tried reading from a file but i cant use the printf function with a vector column. dont want to use fwrite either as only printf works. Any ideas on a solution? Thanks

   s = serial('COM3');
  set(s,'BaudRate',9600);
  s.InputBufferSize = 6000;
  fopen(s);

         t=1;
  a=0;
  fprintf(s,'9 8 7 6 5 4 3 2 1 0')
  while(t<=10)
  a =fscanf(s,'%d');
  x(t,:) =[t a]
  t=t+1;
  plot(x);
  drawnow;
  axis auto;
  grid on;
  end