="menu-1293-1" class="middle odd sf-item-9 sf-depth-4 sf-no-children"><a href="../working-with-special-data-sets/POLYGONAL-DATA.html" class="sf-depth-4">8.9 POLYGONAL DATA</a></li><li id="menu-1245-1" class="last even sf-item-10 sf-depth-4 sf-no-children"><a href="../working-with-special-data-sets/DSG_datasets.html" class="sf-depth-4">8.10 Discrete Geometries Datasets</a></li></ul></li><li id="menu-1398-1" class="middle odd sf-item-11 sf-depth-3 sf-total-children-7 sf-parent-children-0 sf-single-children-7 