pan><span class="p">(</span><span class="n">xr</span><span class="p">,</span><span class="n">yr</span><span class="p">)</span> <span class="p">;</span>
<span class="n">frames</span> <span class="p">=</span> <span class="p">[</span><span class="n">x</span><span class="p">(:)</span><span class="o">&#39;</span><span class="p">;</span> <span class="n">y</span><span class="p">(:)</span><span class="o">&#39;</span><span class="p">]</span> <span class="p">;</span>
<span class="n">frames</span><span class="p">(</sp