 <span class="string">'markersize'</span>, 20);
plot(Xrecon(:,1), Xrecon(:,2), <span class="string">'g+'</span>, <span class="string">'markersize'</span>, 20, <span class="string">'linewidth'</span>,2);
<span class="keyword">for</span> i=1:n
  h=line([Xrecon(i,1) X(i,1)], [Xrecon(i,2) X(i,2)], <span class="string">'color'</span>, <span class="string">'b'</span>);
<span class="keyword">end</span>
<span class="comment">% plot the linear subspace</span>
Z2 = [-5;5]; <span class="comment">% 2 ``extreme'' points