What is a pseudo-node used for in GIS?

A pseudo-node is used in GIS to indicate a change in attribute along a line feature. This means that when a line (such as a road or river) has varying characteristics, like differing speed limits or names, a pseudo-node serves as a marker that signifies where these changes occur. By implementing pseudo-nodes within the data structure, it allows for better representation and management of the attributes linked to linear features. This can enhance spatial analyses and ensure that users have a clear understanding of where specific characteristics change, resulting in more accurate data interpretation and representation.

The other options do not accurately describe the function of a pseudo-node. While a representation of a connecting line and a type of data layer pertain to various GIS functionalities, they do not specifically relate to the role of pseudo-nodes in capturing attribute changes. Similarly, a point with multiple connections refers to another GIS concept that does not encompass the essential purpose of pseudo-nodes within line features.