GIS Exam 2 Questions with Complete Solutions (Latest 2025) Spatial Data Acquisition - Correct Answers ✅1. Data Capture (Digitizing, GPS)
- External Data Sources (Gov Agencies, private industry)
- Digitizing "tablet" and puck with paper map (tablet
- Computer screen with scanned file of paper map (heads up
Data Capture - Correct Answers ✅The conversion of spatial information into digital format Digitizing, GPS Includes attribute data, too Digitizing - Correct Answers ✅A type of data capture or geocoding The process of turning analog (paper) maps into digital maps Tracing map features Stream Digitizing - Correct Answers ✅Requires post- processing to remove extra vertices, or a method that removes vertices as it goes along Vector Data - Correct Answers ✅Points, Lines, Polygons Digitizing - Correct Answers ✅2 digitizing mediums
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GIS Exam 2 Questions with Complete Solutions (Latest 2025) Tablet Digitizing - Correct Answers ✅Captures map data by tracing lines from a map Uses a curser and an electronically-sensitive tablet Result is a string of points with x,y values
Tablet Digitizing: Considerations - Correct Answers ✅Uses
a proper map, requires a digitizing tablet, eye and body strain, must look at screen and tablet, size of map features as seen through puck are as big as they get Heads Up Digitizing - Correct Answers ✅Prepare proper map, scan map into an image (jpeg), create new layer (of the'tics'), geo-reference image (using 'tic' layer), digitize features from image on scree, enter attribute information, print check-plot of line work and attributes to scale of scanned paper map, make corrections Scanning Issues - Correct Answers ✅Flat bed, drum, DPI, file size Scanning - Correct Answers ✅Places a map on a glass plate and passes a light beam over it Measure the reflected light intensity Result is a grid of pixels Image size and resolution are important
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