• Louisiana State University

• GEOG 2040

Geospatial Lab Application 13: Name: ________________ Digital Terrain Analysis Question 13.1: How does the pseudo-3D view from this position and altitude aid in bringing out the terrain features of Zion (compared to what you originally saw in the overhead view earlier)? When you view the map from directly above everything appears flat. When you use a 3D view you can see changes in elevation and topography. Instead of seeing ripples, they are mountains. Question 13.2: How did the vertical exaggeration value of 2 affect the view of Zion? The mountains and elevation are greatly distorted; they appear stretched and much taller. Question 13.3: Try the following values for vertical exaggeration: 0.5, 1, and 3. How did each value affect the visualization of the terrain? In addition to the value of 2 you examined in Question 13.2, which value of vertical exaggeration was the most useful for a visual representation of Zion and why? The value of 0.5 made the elevation much more flat, the slope was very shallow. The value of 1made the elevations normal, the slope was as it would be in real life. The value of 3 was very distorted, the slope was much steeper than it is naturally. Question 13.4: At what elevation is the height of the park headquarters/visitors center? The park headquarters/visitors center is located at 4035 ft.