Chapter 4

Geographic Information Systems and Remote Sensing


As Chapter 2 illustrated, maps describe a wide variety of themes and employ many different visualization techniques to display them. While they have historically been drawn by hand, maps are often created today using a modern geographic contribution, geographic information systems (GIS). This field of study includes a broad collection of tools, techniques, and ways of thinking about spatial data and how it can be analyzed and displayed. Technicians collect field data with a GPS unit, analysts use desktop computers to make sense of spatial data, cartographers use GIS technology to visualize information, and policy-makers base decisions on map service providers engaged in ...

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