Junction
In network analysis, a point where two or more linear features (such as roads or pipes) connect. Junctions are crucial for modelling and analysing flow, connectivity, and routing in spatial networks (inferred from standard GIS usage).
What is a Junction in GIS?
A junction in GIS is the intersection or connection of two or more linear objects, such as roads, pipelines, or utility lines. In a network dataset, it serves as a connecting node, aiding in the modelling of movement or flow inside the network.
One of a junction's primary functions:
Indicate junctions, endpoints, or connecting points.
Utilized in network analysis (e.g., flow modelling, routing)
Aids in determining flow direction and connection.
Able to store characteristics such as utility connection type, flow capacity, and traffic control types
In applications where precise network structure and connectivity are essential, such as hydrological modelling, utility management, and transportation planning, junctions are essential.
Related Keywords
In GIS, combining two layers according to their geographical relationship—rather than an attribute—is known as a spatial join. It enables analysis that connects geographic features with pertinent data by attaching data from one layer to another using locations, such as points within polygons or overlapping areas.
In a GIS geometric network, a geometric network junction is the intersection of two or more edges (lines). In utility and transportation networks, junctions stand in for elements like switches, valves, or intersections that regulate flow and facilitate network analysis. They are crucial for understanding how resources or traffic flow through a network and for modelling connection.
Junction-edge connection connects nodes (junctions), such as transformers or valves, to edges (pipes or cables) in a GIS utility network. Accurate network tracing, flow analysis, and effective asset management are made possible by this interconnectedness.
An edge in GIS is the linear link or segment between two junctions, whereas a junction is the place where two or more linear features (such as roads, pipelines, or rivers) meet or intersect. In a network, junctions are just nodes, or points, and edges are the links, or lines, that connect those nodes.