In spatial analysis, which term best describes the point from which an origin emanates?

• A. Hub
• B. Node
• C. Source
• D. Origin

Answer: (B)

In spatial networks, the fundamental unit where lines or paths begin and end is a node. This point represents a specific location on the map with connections to other points through edges, making it the natural place from which movement, flow, or diffusion can originate. A hub is a type of node characterized by many connections, but the term describes a role within the network rather than the basic unit itself. A source denotes the starting point of a particular process (like diffusion or emission), which is context-specific rather than the generic network position. An origin is a general starting point, but in network terminology the precise location used to anchor routes and flows is a node. Therefore, the point from which an origin emanates is best described as a node.