Mouse and Keyboard Use
This page summarizes use of the mouse and keyboard for
controlling IDV displays using the default mouse and keyboard
assignments. You can change the default behavior through
Navigation tab of the User Preferences accessed
by the menu.
"Click" the mouse means to press and release a mouse button once.
"Double-click" means to click a mouse button twice quickly.
"Drag" means to press and hold down a mouse button,
move the mouse and then release the mouse button.
All references to mouse buttons are in respect to a 3-button
If you are using a left-handed mouse, MB1 is the right button and
MB3 is the left-button.
- MB1 (mouse button 1) is the left button.
- MB2 (mouse button 2) is the middle button.
- MB3 (mouse button 3) is the right button.
If you are using a Mac with a single button mouse, MB3 is simulated
using the Option+click combination. Not all functions listed
below (e.g., panning) work with this combination on a one button mouse.
This table summarizes the operations you can perform with the mouse:
|Mouse Button||Key Modifier||Purpose|
||Moving selector points in view windows, selecting items in lists
and widgets, clicking buttons, moving sliders.
||Rubber band zoom in view window
||Rotate 3-D displays
||Panning in view windows
Zoom, Pan, and Rotate
There are several methods to zoom, pan, and rotate in the IDV. You
can use the mouse, the arrow keys, a rubber band box, or the Zoom/Pan
Rubber Band Box to zoom in
You can zoom into an area by outlining it with a "rubber band box."
Hold down the Shift key, then drag the left mouse button (MB1)
to outline a box. The outline appears while you are dragging the mouse,
before the zoom. If the display was significantly rotated before using
the rubber band box, the new display may have the data area off screen;
zoom out to find it, or use Ctrl-r key combination to reset to
the initial overhead viewpoint.
Mouse controls to Zoom, Pan, and Rotate
You can zoom, rotate, and pan using the right mouse button (MB3).
- To zoom a 3D display hold down the Shift key and drag the right
mouse button (MB3). Moving the mouse forward zooms in; moving the mouse
backward zooms out. This method allows any amount of zooming and
- To pan a 3D display hold down the Ctrl key and drag the right
mouse button (MB3) in the direction you want to move the display.
This method allows the most precise control over how much panning
occurs and allows panning in any direction.
- To rotate a 3D display in any direction, drag the mouse with
right button down over the display. Rotating the display with the
mouse takes some getting used to.
Keyboard controls to Zoom, Pan, and Rotate
You can zoom, rotate, and pan using the arrow keys on the keyboard.
You must first click the mouse in the view window.
- You can zoom by holding the Shift key and pressing
the up (zoom in) and down (zoom out) arrows on the keyboard.
- You can pan the display by holding the Ctrl key and
pressing the arrow keys on the keyboard. Using the method,
the display will pan in the direction of the arrow.
- You can rotate the 3D display using the arrow keys on
the keyboard. Click in the window and use
the arrow keys to rotate the 3-D box.
- Use the key combination Ctrl-r to reset the display to
the initial view of this projection (overhead, centered on center
of the map projection in use).
The IDV uses the standard methods for selecting multiple items
in a list (e.g., times list). These are:
- To select everything in the list::
- Click on the list to activate it.
- Press Ctrl-a.
- To select a continuous range:
- Click on one item in the list to start the range.
- Hold the Shift key down and click on the last
item in the range. All items between the first
and last are selected.
- To select a non-continuous range:
- Click on one item in the list.
- Hold the Ctrl key** down and click on other items
in the list. As each item is clicked, it is highlighted
to indicate that it is selected.
- To unselected an item, hold the Ctrl key** down and
click on the item.
**On the Apple Mac, use the Command key instead of
Toggling Visibility of Displays
There are several ways to toggle visibility of displays.
- When using the side legends, the
Display Visibility checkbox to the left
of the label can be used to toggle the visibility of that display.
When using the bottom legend, click on the legend label to
toggle visibility of that one display.
- The padlock icon on the right side of the
legend bar is a toggle to lock visibility.
Click on the padlock icon to toggle locking. When locked, the icon
will look like this. . This lock overrides
most other actions which might change visibility, including
using the keyboard number keys. Use this to lock one or more
displays' visibility on or off while you change visibility of other
displays. You can still toggle visibility of a
locked display with a click on the legend label.
- The function keys
F1, F2, F3 can
be used to cycle visibility as follows:
F1 key cycles visibility through
all non-locked displays, showing one at a time.
F2 turns on all non-locked
F3 turns off all non-locked
- Use the checkbox
menu item in each display control's menu.