<span class="comment">% should only look at joint distribution for same speed segments in</span>
0145     <span class="comment">% same zones right now.   The JointDist command expects equal length</span>
0146     <span class="comment">% vectors.  The following variables are just calculated in case we</span>
0147     <span class="comment">% modify JointDist down the road to handle vectors of different</span>
0148     <span class="comment">% lengths.</span>
0149     
0150     <span class="keyword">if</span> n