Selecting features interactively in ArcGlobe by clicking in the view

Selecting features interactively is a quick way of defining a subset of features to streamline your other GIS actions: 3D editing, 3D analyses, viewing attributes, and so on. ArcGlobe has three different selection tools for clicking or dragging in the view. Sometimes a particular tool will be better suited to your current use case; this topic will help distinguish the options, as well as provide specific requirements and usage tips. The most effective 3D selection tool can be quite different depending on factors such as base heights, available surfaces, and the importance of what it is you need to select.

For each selection tool, the following selection behaviors and keyboard shortcuts are the same:

• You can click or drag to select features.
• Press and hold SHIFT when clicking or dragging to add features to the current selection.
• Press and hold CTRL when clicking to deselect features from the current selection.
• Press and hold CTRL + SHIFT to select from the current selection and deselect the remainder.
• Press and hold SPACE to navigate the 3D view, while still keeping the current selection tool active.
• Clear a selection in the 3D view by clicking away from the selected features, or click the Clear Selected Features button on the Tools toolbar.

Using the Select By Screen Rectangle tool

This is the default selection tool on the Tools toolbar and will probably be your most frequently used selection method. The behavior of this tool is also mimicked in the Edit Placement tool when conducting a 3D edit session. It allows you to individually click features for selection or drag a flat, rectangular box across your screen. Everything that is drawn inside that view is selected. This sometimes means features you don't see (behind larger features in front) are also selected.

Dragging direction gesture

When dragging the selection rectangle, there is a difference in behavior depending on the direction from which you initiate the gesture. If you drag the box in a left-to-right direction, only those features completely within the shape are selected. If you drag in a right-to-left direction, features that are completely and partially within the shape are selected.

Left-to-right dragging selects all features completely within the shape. Your pointer can start in either corner on the left.

Right-to-left dragging selects features completely or partially within the shape. Your pointer can start in either corner on the right.

Use case

This tool is useful if you want to select features quickly whether they are associated with a surface or not. As well, it is convenient because any way you navigate the view, the rectangle is always in the same orientation on the screen.

Steps:

1. Click the Select By Screen Rectangle button on the Tools toolbar.
2. Select the desired features by dragging a rectangular box across the 3D view.
Remember that the direction in which you drag the rectangle impacts what is selected.
3. Optionally, you can click an individual feature.
The feature, or set of selected features, is highlighted in the selection color when you release the pointer.

Using the Select By Draped Envelope tool

This tool requires that a surface be part of the 3D view. In ArcGlobe, this could be the default globe surface or any custom surface you provide. Once you click and drag, you will notice that the digitized shape follows the surface of the globe or the custom elevation surface you click on. This behavior is also known as surface hugging and is the primary feedback feature for this tool. It provides slightly greater selection restrictions than the Select By Screen Rectangle tool due to the fact that it requires a surface.

The draped envelope option selects all features within the 2D envelope, including features that are draped on or floating above and below the surface.

Important requirement

A surface, such as the globe surface, a raster, TIN, or a terrain dataset, is required.

Use case

This tool is useful for selecting features where you want to ignore the heights of the features, such as all gas and electric features in a neighborhood.

Steps:

1. Click Select By Draped Envelope from the Selection drop-down menu on the Tools toolbar.
2. Click and drag over a surface in any direction, keeping the left mouse button pressed.
3. Drag a draped shape in both x and y directions.
The set of selected features is highlighted in the selection color when you release the pointer.

Using the Select By 3D Box tool

If you need to select a 3D volume of features, perhaps within a stacked set of other features, use the Select By 3D Box tool . The behavior that distinguishes this tool from the other 3D selection tools is that it allows you to more easily and precisely select features that are vertically located between other features.

Important requirement

You need to start your selection from a surface or a feature. If you first click in open space where no features exist, the starting location of the 3D box defaults to a height of zero.

Use case

This tool is useful for selecting stacked features, such as transportation networks within buildings.

Using Select By 3D Box to only select the features on the top four floors of a building

Steps:

1. Click Select By 3D Box from the Selection drop-down menu on the Tools toolbar.
2. Click and drag to digitize the first stage of the 3D box. You see only the base x,y plane of the box.
3. Press and hold Z and move the pointer to extend the height of your box. You can drag in a positive or negative direction.
When you release Z, your pointer returns to an x,y dragging mode but maintains the height you just established.
4. Release the pointer.
The set of selected features is highlighted in the selection color when you release the pointer.

Tip:

You can customize which layers you want to be part of the selectable features by adjusting your settings in the List By Selection view on the table of contents.