The Tree Visualizer display is best thought of as though you are viewing the scene through a camera. To change the view, you change the position of the camera (the viewpoint). This section consists of two tables that serve as a quick reference for the Tree, Decision Tree, Option Tree, and Regression Tree Visualizer controls. Table A-1 describes the navigation buttons.
Table A-1. Navigation Icons in the Tree Visualizers
icon | Action | |
|---|---|---|
| Returns the chart to the size and position designated as the home view. By default this is the size and position of the chart when the visualizer is first invoked. You can change the home position by using the next icon. | |
| Sets a new home view for the chart. Use this to save a certain view or position. | |
| Moves the chart to a position where it is centered and all of it is visible in the window. | |
| Undoes the previous move (like the Back button on a Web browser). | |
| Redoes a move that has been undone (like the Forward button on a Web browser). | |
| Moves one node closer to root of the tree. | |
| Moves one node or bar to the left. | |
| Moves one node or bar to the right. | |
| Moves one node down the tree on the left path. | |
| Moves one node down the tree on the right path. | |
| Pops up a menu of possible paths from the current node. |
Table A-2 lists several manipulations you can perform on the scene in the tree visualizer. Most of these manipulations can be done either with one of the controls on the visualizer window or with a mouse action.
Table A-2. Manipulating the Tree Visualizer Scene
Action | Slider or Wheel | Mouse Equivalent |
|---|---|---|
Fly over surface of the scene | N/A | Hold down the left and right mouse buttons (or middle mouse button) and move the mouse. |
Raise or lower bar heights to emphasize differences | Height slider (upper left) | N/A |
Move viewpoint up and down | H wheel | Hold down the right mouse button, and move the mouse up and down. |
Move the viewpoint from side to side | Side to side wheel (<-->) | Hold down the left and right mouse buttons (or middle mouse button) and move the mouse side to side. |
Move the viewpoint backwards and forwards | Dolly wheel | Hold down the left and right mouse buttons (or middle mouse button) and move the mouse up and down. |
Change the up and down tilt of the camera | Tilt wheel | N/A |
Move forward in the direction you are pointing | N/A | Hold down Alt key and left and right mouse buttons (or middle mouse button) and move mouse. While moving forward, the viewpoint also moves down, based on the current tilt. Similarly, while moving backward, the viewpoint moves up, based on the tilt. |
Select a child of a node | N/A | Hold down the Ctrl key and click the right mouse button on parent node, then click on the child to move there (or use the branching navigation icon). |
This section consists of two tables that serve as a quick reference for the Evidence, Decision Table, Map, Scatter, and Splat Visualizer navigation controls. Table A-3 describes the navigation buttons.
Table A-3. Navigation Buttons in Non-Tree Visualizers
Button | Name | Action | |
|---|---|---|---|
| Pick | Changes the program to pick mode (an arrow). In pick mode, you can highlight (brush over) or select (click) elements of the chart. | |
| Grasp | Changes the program to grasp mode (a hand). In grasp mode, you can move the chart around in the window: — To move chart in window, hold down right mouse button and move mouse. — To rotate chart, hold down left mouse button and move mouse. —To dolly the chart in and out, hold down left and right mouse buttons (or use middle mouse button) and move mouse. | |
| Home | Returns the chart to the size and position designated as the home view. By default this is the size and position of the chart when the visualizer is first invoked. You can change the home position by using the set home icon. | |
| Set home | Sets a new home view for the chart. Use this when you want to save a certain view or position. | |
| View All | Moves the chart to a position where it is centered and all of it is visible in the window. | |
| Zoom | Moves the point you select to the middle of the pane and zooms to it. When the mouse cursor becomes a targeting sight, move it to the spot you want to see more clearly, then click the left mouse button. | |
| 3D | Toggles the 3D perspective. | |
| Top View | Changes the chart to a top view (Scatter and Splat Visualizers only). | |
| Front View | Changes the chart to a front view (Scatter and Splat Visualizers only). | |
| Side View | Changes the chart to a side view (Scatter and Splat Visualizers only). |
Table A-4 describes the adjustment sliders and wheels in the non-tree visualizers.
Table A-4. Manipulating Non-Tree Visualizer Scene
Action | Slider or Wheel | Mouse or Keyboard Action |
|---|---|---|
Toggle between Select and Grasp mode | N/A | Press the Esc key or navigation buttons. |
Move scene | N/A | Click and hold the right mouse button. Move the cursor in the direction you want to move the chart. |
Raise or lower cake, pie, or bar heights to emphasize differences | Height slider (upper left) | N/A |
Rotate scene around X axis | Rotx wheel | Click and hold the left mouse button. Move the cursor in the direction you want to rotate the chart. |
Rotate scene around Y axis | Roty wheel | Click and hold the left mouse button. Move cursor in the direction you want to rotate the chart. |
Zoom scene in and out | Dolly wheel | Click and hold the left and right mouse buttons (or middle mouse button). Move the mouse down to zoom in and up to zoom out. |
Filter out less important attributes | Detail slider | N/A |
Filter out attribute values with record weights less than a specified percentage of the total weight of records in the dataset, up to 2% | % Weight Threshold slider | N/A |
Drill down through levels of detail (Decision Table and Map Visualizers only) | N/A | Put the mouse arrow over a specific chart (or the background for all charts) and click the right mouse button. |
Drill up through levels of detail (Decision Table and Map Visualizers only) | N/A | Put the mouse arrow over a specific chart (or the background for all charts) and Ctrl-click the right mouse button (or click the middle mouse button). |