er">rtree</span><span class="special">::</span><span class="identifier">envelope</span><span class="special">()</span></code></code>.
          </p>
<h6>
<a name="geometry.reference.spatial_indexes.group__rtree__functions.bounds_rtree______const___.h1"></a>
            <span class="phrase"><a name="geometry.reference.spatial_indexes.group__rtree__functions.bounds_rtree______const___.synopsis"></a></span><a class="link" href="bounds_rtree______const___.html#geometry.reference.spatial_indexes.group__rtree__fu