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Geog 458: Map Sources and ErrorsContextualizing spatial dataRepresenting GeographyData collectionGeoreferencingData storage and editingGeog 458:Map Sources and ErrorsJanuary 27, 2006Midterm ReviewSample questionsContextualizing spatial data•Discuss the value of metadata•What is the vision of NSDI?•How do inter-agency initiatives – national map, geospatial one stop, and FGDC – fit together?•What are core components of NSDI?Representing Geography•What are building blocks of geographic representation?•What is topology? How is it stored in a table?•How does generalization algorithms work?•What is hybrid GIS?•What is TIN? How does it work?Data collection•How is spatial data collected?•What are three key aspects of resolutions of remotely sensed image? •What is the advantage of using active remote sensing system?•Compare and contrast aerial photo and satellite image•What is SDTS?Georeferencing•What are basic assumptions of address geocoding?•What is linear referencing?•What is ellipsoid?•How is NAD27 different from NAD83?•{T,F} UTM has equatorial aspect•{T,F} SPC adopts one projection•Which geometric property is preserved in UTMData storage and editing•How can be examining dangling nodes helpful in detecting potential errors?•When do you use rubber-sheeting?•What are five components of data quality? •Give me examples of attribute accuracy•Give me examples of logical


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DePaul GEOG 458 - Midterm Review

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