Glossary for Geospatial Science

layer: A display entity comprised of one or more components that can be manipulated separately from other layers.� There is often a one-to-one correspondence between layers and objects in TNTmips, but an individual layer may be comprised of multiple objects, such as the red, green, and blue components used to create a single layer in multiple raster display.� Each group in the TNTmips display process may be composed of multiple layers of objects.� The background layer may be overlaid by a raster object, such as an airphoto, which may in turn be overlaid by layers of CAD and vector objects which show soil boundaries, roads, or pin-mapping symbols.�