Geographic and Attribute Data: Selection, Input, and Editing - Introducing Geographic Information Systems with ArcGIS - page 334

16. In ArcMap add the Feature Class named Trail_horizontal from
___IGIS-Arc_ YourInitials \Digitize&Transform
\Islands.mdb\UTM_Zone_2.
Make it a red line of width 3.
Trail_horizontal is a trail from the water's edge to the rim of the volcano, but with all segments in the
horizontal, sea level plane. What we will do is make a three-dimensional trail, named Trail, with the Editor,
using the pattern of Trail_horizontal.
17. In ArcMap add the empty Feature Class named Trail (that you made earlier in this
exercise), from
___IGIS-Arc_ YourInitials \Digtize_Transform
\Islands.mdb\UTM_Zone_2
18. Zoom to Trail_horizontal. Start Editing Trail-making sure that the target is Trail. Starting at the
ocean make a polyline with five segments that overlay the segments of Trail_horizontal. End
each segment, including the last , with a single click .
19. Find Sketch Properties on the Editor toolbar. Click it. You will see the three
dimensional coordinates of the six vertices you have made. All the z-coordinates are
presently zero. Starting with the vertex on the ocean, click each z-coordinate to change
the values to:
0, 400, 900, 1500, 3000, 4000
20. Click Finish Sketch (or press F2). Dismiss the Edit Sketch Properties window. Click Save Edits,
then click Stop Editing. Dismiss Sketch Properties. Dismiss Create Features. ____21. Start
ArcScene by selecting Start > (All) Programs > ArcGIS > ArcScene. Add Trail and North_Islands_
Polygons from
___IGIS-Arc_ YourInitials \Digitize&Transform
\Islands.mdb\UTM_Zone_2. Zoom to Trail.
Make ArcScene full screen. Change the Trail symbol to a black line of width 2.
22. Add Trail_horizontal from
[___]IGIS-Arc\Digitize&Transform\Islands.mdb\UTM_Zone_2.
23. Explore, using the Navigate cursor (with the left mouse button) and the zoom control (use the
right mouse button). Convince yourself that the polygon of Trail does have a three-dimensional
component. Using Identify to determine the Shape_Length of Trail. __________kilometers. Close
ArcMap, ArcScene, and ArcCatalog.