Geovisualization

Geovisualization, also called geographic or cartographic visualization, is a set of tools and techniques for analyzing geographic data through interactive visualization. Unlike traditional static maps, which have limited exploratory capability because their graphical representations are tightly bound to the underlying geographic information, geovisualization leverages modern microprocessors to render map changes in real time. This allows users to adjust mapped data on the fly—exploring different layers, zooming in or out, and altering visual appearance, typically on a computer display. The field emphasizes knowledge construction over mere knowledge storage or information transmission, communicating geospatial information in ways that, combined with human understanding, enable data exploration and decision-making.

The term “visualization” appeared in cartographic literature as early as 1953, in an article by geographer Allen K. Philbrick. A 1987 National Science Foundation report redefined the term, placing it at the convergence of computer graphics, image processing, computer vision, computer-aided design, signal processing, and user interface studies, and highlighting its role in knowledge creation and hypothesis generation. Geovisualization emerged as a research field in the early 1980s, largely based on the work of French graphic theorist Jacques Bertin.

His focus on dynamic visual displays as prompts for scientific insight, and on methods leveraging perceptual cognitive processes to facilitate scientific thinking, aligned with the NSF report’s emphasis. The International Cartographic Association established a Commission on Visualization & Virtual Environments in 1995, reflecting the field’s continued growth. Geovisualization is closely related to scientific visualization and information visualization, contributing the map metaphor—widely used to visualize non-geographic data—and also connects to urban simulation.