What is a dangling node in GIS?

A dangling node in GIS refers to a node that exists at the end of a line and has no connections to other nodes or edges. This situation typically arises when a line or a network does not connect back to a junction or another line, resulting in a node that is isolated. This concept is particularly relevant in network analysis, where the integrity of connectivity is crucial for accurate modeling and analysis of transportation systems, utility networks, and other spatial relationships.

By identifying and addressing dangling nodes, GIS professionals can improve the accuracy of their analyses, ensure proper routing calculations, and maintain the integrity of spatial data models. This understanding aids in refining data quality and resolving issues related to incomplete or poorly constructed networks.