MobilityDB provides a set spatiotemporal types, namely, tgeometry (temporal geometry), tgeography (temporal geography), tgeompoint (temporal geometry point), tgeogpoint (temporal geography point), tcbuffer (temporal circular buffer), tnpoint (temporal network point), tpose (temporal pose), and trgeometry (temporal rigid geometry). At a conceptual level, these spatiotemporal types are organized in the hierarchy depicted in Figure 7.1, “Hierarchy of spatiotemporal types in MobilityDB.”.
In this chapter and the following one we cover the type TGeo and its subtypes, that is, the spatiotemporal types derived from the PostGIS types geometry and geography. In the subsequent chapters we continue describing the remaining spatiotemporal types.