Node

Introduction

Two end nodes and zero or more internal nodes, or vertices, define a line. A node or vertex is like a point, but it only serves to define the line and provide shape in order to obtain a better approximation of the actual feature. The straight parts of a line between two consecutive vertices or end nodes are called line segments. Many GISs store a line as a sequence of coordinates of its end nodes and vertices, assuming that all its segments are straight.

Synonyms

Vertex

Learning outcomes

Prior knowledge

Incoming relations