n class="identifier">value</span><span class="special">;</span>

    <span class="comment">// create the rtree using default constructor</span>
    <span class="identifier">bgi</span><span class="special">::</span><span class="identifier">rtree</span><span class="special">&lt;</span> <span class="identifier">value</span><span class="special">,</span> <span class="identifier">bgi</span><span class="special">::</span><span class="identifier">linear</span><span class="special">&lt;</span><span class="number">1