National Center for Geographic Information and Analysis
Unit 49 - Visualization of Spatial Data
- Author(s): Unit 49, CC in GIS
- McGranaghan, Matt
- et al.
This unit presents an overview of concepts related to cartographic visualization. It begins with some notes on cartography, including motivation, user considerations, and components of a visualization system. Graphic variables including location, value, hue, size, shape, spacing and orientation are described, and limitations—imposed by hardware and human perceptual and cognitive abilities—are discussed. Visualization of the temporal dimension and three-dimensional data are briefly discussed.