Add vectors into a matrix using for loop

mode 1 is an imported matrix of 3x7 (imported data)

syms x y z

for x = -0.1:0.05:0.1
      for y = x = -0.1:0.05:0.1
          for k = 1:3
              eps2 = mode1(k,5)*mode1(k,5);
              X_0 = [mode1(k,1) mode1(k,2) mode1(k,6)];
              X = [x y z];
              R = X - X_0; 
          end 
      end 
end

Want to produce a matrix that stores each vector R. For example the first vector that is produced as row 1, second vector produced row 2, third vector produced row 3, etc. Ultimately I need to contour this.