LAYERS OF GEOGRAPHIC INFORMATION
TO DESCRIBE AND ANALYZE OUR WORLD.
-
LINES - Streets and Rivers
- POINTS - Cities, Monuments, Rest Areas
-
POLYGONS - States, Lakes, City Boundaries
-
IMAGES - Satellite images, Thermal images, Elevation
Each layer can also contains a table with various attributes (information) about the data, ie number of students in a school, average class size, school mascot, etc.