Exercise 6: ArcGlobe basics
Navigating in ArcGlobe lets you explore your data and teaches you how to accomplish fundamental tasks that you'll use later.
In this exercise, you'll learn how to use the ArcGlobe navigation tools and set properties that enhance your viewing experience. This exercise assumes that you are using default online layers for the globe surface. The online layers require that you have an Internet connection.
Examining the default layers in ArcGlobe
First, you'll start ArcGlobe and learn what kind of data is included by default.
- Start ArcGlobe by clicking Start > All Programs > ArcGIS > ArcGlobe 10.
- In the ArcGlobe-Getting Started dialog box, click Browse and set the default geodatabase path to D:\3DAnalyst\3D_Default.gdb.
- Click OK to close the Getting Started dialog box.
- Click Customize and click ArcGlobe Options.
- Click the Default Layers tab to view all start-up layer options for ArcGlobe.
- Click OK.
- Click the List By Type button in the table of contents.
Adding more layers
Default layers serve as a background to any data that you want to add to ArcGlobe. Next, you'll add some local data for the Las Vegas area.
- On the right side of the ArcGlobe window, move your pointer over the Catalog tab or click the Catalog tab.
- Navigate to the Exercise6 folder in the Folder Connections path where you locally saved the tutorial data.
- Click las_vegas_area.img, then press SHIFT and click las_vegas_strip.img from the bottom contents view.
- Drag both selected layers into the 3D view of ArcGlobe, then release the mouse button.
Changing a layer's drawing priority in the table of contents
Draped layers that have overlapping extents need to have a drawing priority set so one layer gets drawn on top of the other. ArcGlobe makes some assumptions to accomplish this using criteria such as the cell size of a raster layer. Occasionally, you'll need to override the ArcGlobe default drawing priorities. One way to do this is to change the order of draped layers as they appear in the List By Type view of the table of contents.
The drawing priority of draped layers in the ArcGlobe table of contents is designed so that the top-most layer in the list is the top-most layer on the globe. For instance, if you were to drag a layer from the bottom of the list to the top, it would now be rendered on top of all your other layers. This technique can help enhance a view if, for example, you want to display points of interest on top of imagery.
- Right-click las_vegas_area.img and click Zoom to Layer.
- Click and hold las_vegas_area.img and drag it so it is above the lmagery layer.
- Release the mouse pointer to drop the layer in its new position.
Navigating in Globe mode
ArcGlobe has two viewing modes: Global and Surface. Global mode allows you to navigate your data in the realm of the whole globe and sets the camera target to the center of the globe. Surface mode lets you work with your data at a lower elevation, allows additional perspective viewing characteristics, and sets the camera target on the surface of the globe. You’ll learn how to navigate in Global mode first, then in Surface mode.
The Navigate tool is active when you start ArcGlobe. You can see the names of other tools on the Tools toolbar by hovering the pointer over the tool.
- Click the Full Extent button.
- Click the globe, slowly drag up and to the right, then release the mouse pointer.
- Right-click and drag down.
- Click Full Extent .
Turning on the Spin toolbar
You can use the Spin toolbar to automatically spin the globe clockwise or counterclockwise at any speed you wish.
- Right-click the menu area and click Spin.
Using the Spin tools
- Click the Spin Clockwise button.
- Click the top arrow on the Speed text box to increase the rate at which the globe spins.
- Click the Stop button to stop the globe from spinning.
Finding places on the globe
If you have an Internet connection, you can find world locations by using the ESRI Online Place Finder in the Find dialog box.
- Click the Find button.
- Click the Locations tab.
- Click the Choose a locator drop-down list and click World Places (ArcGIS Online).
- Type Las Vegas in the Place Name text box.
- Click Find.
- Right-click Las Vegas, Nevada, United States, and click Create Bookmark.
- Right-click Las Vegas, Nevada, United States, and click Zoom To.
- Click Cancel to close the Find dialog box.
The Find tool is an easy way of locating almost any place in the world. Use it to locate points of interest, then use bookmarks to save perspectives of these places.
Now that you're zoomed close to the globe surface, you'll learn how to navigate in Surface mode.
Navigating in Surface mode
When you zoom in close to your data, you can switch to Surface mode to make your navigation apply more correctly to your new environment. Switching to Surface mode places the camera target on the globe surface and gives you a sense of 3D perspective while you navigate your data.
- Right-click las_vegas_strip.img in the table of contents and click Zoom To Layer.
- Press CTRL and click the center of the roof of the Monte Carlo building.
- Press CTRL and right-click the center of the roof of the Monte Carlo building again.
- Click the Navigate button.
- Click the bottom of the display and slowly drag up.
- Click the Full Extent button to return the globe to its full extent position.
You can modify the way ArcGlobe functions at both the application and globe levels. First, you'll explore some application-level options.
- Click the Customize menu and click ArcGlobe Options.
- Click the General tab.
- Check Animate viewer when using tools and commands.
- Click OK to close the dialog box and apply the setting.
- Click Bookmarks and click Las Vegas.
Setting a document-level option
- Double-click Globe Layers in the table of contents.
- Click the Background tab.
- Click the Sky color drop-down arrow and click a color of the morning or evening sky.
- Click OK.
In this exercise, you learned how to differentiate between ArcGlobe layer types, navigate in Global and Surface modes, find places, and set some application and globe properties. Now that you've learned some fundamentals, you can begin to explore other areas of ArcGlobe. In the next exercise, you'll learn how to use data as different layer categories.