Exploring gis - Study guides, Class notes & Summaries

basemap  A map depicting locational reference information, such as landforms, roads, landmarks, and political boundaries. feature  A representation of a real-world object on a map. GIS  Geographic information system. GIS uses interactive maps to analyze data and help answer questions about the world. layer  A collection of related features in a GIS map. The features in a layer usually have the same theme, geometry, and set of attributes. For example, a GIS layer might u...