GIS Questions and Answers 100% Pass

GIS Questions and Answers 100% Pass GIS Definiton integrates software, hardware, data, and people (specialists/users) to display geospatial information. ArcMap View, Edit, and Layout your data ArcCatalog Design and maintain a Geodatabase, preview geographic and geospatial data ArcToolbox Geoprocessing and Spatial Analysis Geographic Data location. Maps, aerial photos, satellite images Attribute Data information. Census, demographic, geologic data. Raster Data representation of real world features using digital images, scanned maps, composed of an array of pixels w/ a number in each cell representing the solid color fill of that cell Vector data map features (line, polygon, point). Each feature has attributes (name, area, population..) What GIS can answer Location, condition, trends, and patterns Benefits of GIS Better decision making, better record keeping, managing geographically, improved communication Four main steps Data collection, Data input, data management, and data output GIS Layers information contained in maps and databases stored in a GIS system. Can be analyzed/integrated to reveal relationships. Base map, then layer schools, power plants, water quality, health, etc Continuous Raster pixel values are continuous and represent the concentration values of the phenomena (ex. DEM, temperature data, etc). NO ATTRIBUTE TABLES Discrete Raster Pixel values are independent and form abrupt boundaries (ex. land use, interval temperature data). Have attribute tables