HOA 5 Answersheet TINs and contours(1)

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Youngstown State University *

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4806

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Geography

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Apr 3, 2024

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Advanced GIS: Name: _________________________________ HOA 5: How to Work With Contours, TINs, and 3D Imagery in ArcGIS Pro Question 16.1 : (½ point for graduate students, 1 point for undergrads): What is the contour interval of the Ytownconsstateplane layer? Question 16.2: (½ point for graduate students, 1 point for undergrads): Where are the highest (1060 feet) and lowest (820 feet) elevations located in the Youngstown area? Question 16.3: Challenge Question: (1 point for graduate students, 1 point of extra credit for undergraduates who get it correct): Locate the highest and lowest elevation areas again (your answer to Question 16.2) using the TIN. From your examination of these same areas on the orthoimage, what is actually at these areas in the Youngstown region? Question 16.4 : (1 point): How is the slope of the terrain distributed around the area? (That is, what areas have very flat slopes, and what areas have steeper slopes?) Question 16.5: (1 point): Where are the very steepest slopes found on your slope map? What accounts for these very high slope values and their spatial distributions? Question 16.6 : (1 point): How are your values for aspect distributed around the city? (That is, in what directions are the majority of the steepest slopes facing in the campus areas versus some surrounding areas, etc.?)
Question 16.7: (1 point): What is physically present (from your examination of the orthoimage) at the areas around the city that are considered flat with respect to aspect? Question 16.8: (1 point): You’ll see several bridges crossing the river on the southern side of the city, as well as several freeway overpasses in the surrounding areas. Focus your attention on each of these. How did the orthoimage drape over the bridges and overpasses, and why did this happen? Question 16.9: (1 point): Test out several choices for vertical exaggeration—1.5, 2, 3, 7, and 10. Although the area is actually very flat, which of these exaggeration levels is best for visualizing the landscape features of Youngstown for this project (from what you’ve seen in examining the contours, slope, and slope aspect)? Question 16.10: (2 points): Submit your final MP4 file to Dr. Shellito, who will check over your work for its originality and the quality of the video tour to make sure you get credit for this question.
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