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Geog 458: Map Sources and Errors

Geog 458: Map Sources and Errors. January 27, 2006 Midterm Review Sample questions. Contextualizing 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?

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Geog 458: Map Sources and Errors

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  1. Geog 458:Map Sources and Errors January 27, 2006 Midterm Review Sample questions

  2. Contextualizing 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?

  3. 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?

  4. 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?

  5. 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 UTM

  6. Data 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 consistency

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