\BOOKMARK [1][-]{section.1}{Introduction}{}
\BOOKMARK [1][-]{section.2}{Spatial points}{}
\BOOKMARK [1][-]{section.3}{Grids}{}
\BOOKMARK [1][-]{section.4}{Lines}{}
\BOOKMARK [2][-]{subsection.4.1}{Building line objects from scratch}{section.4}
\BOOKMARK [2][-]{subsection.4.2}{Building line objects with attributes}{section.4}
\BOOKMARK [1][-]{section.5}{Polygons}{}
\BOOKMARK [2][-]{subsection.5.1}{Building from scratch}{section.5}
\BOOKMARK [2][-]{subsection.5.2}{Polygons with attributes}{section.5}
