BRAE 239 Lecture Notes - Lecture 1: Polygonal Chain, Noise Regulation, Arcmap

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Document Summary

Geographic information system is a computer-based system including software, hardware, data, methods, people and network. Geographic - 80% data collected by govt is associated w/ some location in space. Information - attributes, or data that will provide insight into a location (make better decisions) System - seamless operation linking info to geography which requires hardware, networks software, data and operational procedures. Allows user to easily put layers of info on top of each other to look at info in new way. Census tracts: # ppl living in an area. Every gis starts and ends in the real world. Data = 70-80% of effort/money spent on project data, orks, of regions ntenance ads. For discrete data represented as points, lines and polygons. For continuous data such as elevation, slope and surfaces. Arcgis is designed to view, edit and create maps. Arccatalog is for exploring and viewing spatial data.