3.2.5. Thematic vector data
Vector (Fig. 2) data represent a broad range of information, as they include all layers represented by points, lines, or polygons. In a GIS database, common vector layers might represent administrative boundaries (the locations of countries, provinces, states, cantons, etc.), hydrography (rivers, dams, lakes, etc.), built-up areas (buildings, stations, airports, etc.), and land cover.