Geography 2220A/B Study Guide - Midterm Guide: Glonass, Unique Key, Thematic Map
28 Feb 2018
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Lecture 1: geographic information system computer facilitated collection, organization, storage, maintenance, analysis, visualization, output and distribution of spatially referenced information. It is a tool that helps us solve spatial problems. Data itself does not have meaning without interpretation by people. Information: is the data that are processed to be useful and provides answers to who, what, where and when. Data is just numbers: data information knowledge wisdom, software provides the functions and tools needed to store, analyze, and display geographic information. Mapinfo, etc: hardware includes high ram and speed, it runs on pc not mac, applications of gis, navigation, transportation, commercial activity, crime, urban planning, health, disaster mapping, management and mitigation, conservation planning, watershed delineation. Raster is better for high variability: vector use discrete objects such as points, lines and polygons to map or represent different features in the image. Has an associated attribute table to define objects and the table can hold multiple attributes.
