Introducing Geographic Information Systems with ArcGIS: A Workbook Approach to Learning GIS, 3rd Edition

What’s 3-D and What’s Not

The dataset you have worked with that truly includes the vertical dimension as spatial data is the TIN. All other feature classes, even if they have the possibility of the third dimension, are in flatland.

____ 5. From ___IGIS-Arc_YourInitials\3-D_Data add as data, to ArcScene:

• Boat_SP83.shp (symbolize it with a red dot, size 4)5
• cole_dem
• cole_DRG.TIF
• COLE_DOQ64.JPG
• cole_tin

Push the Full Extent button. A lot of visual information will appear, although it is mostly covered up by the TIN. You are viewing it from a point southwest of the image and well above it. This is what is considered full extent in ArcScene. We will explore these data sets using the Navigate tool in ArcScene. The Navigate tool is a bit like a Swiss Army knife—lots of different tools in one artifact. As such, it is both useful and dangerous.

____ 6. Click the Navigate tool on the Tools toolbar. Move its cursor into the display pane and play with it. If you drag left and right with the left mouse button, you can rotate the image around its center. If you drag up and down with the left mouse button, you can tilt the scene. If you drag (up and down) with the right mouse button, you can zoom the image. If the center mouse button is a wheel, you can use that to zoom the image. If you drag with the center mouse button or depressible wheel (or the left and right mouse buttons, held down together), you can pan the image. Experiment. Throughout all this, your good friend is the Full Extent ...