Unidata IDV Workshop for version 6.2u2 > Starting the IDV/GUI Basics > IDV Basic Concepts
2.1.1 Navigating (Zooming, Panning and Rotating) the View Window
The mouse and keyboard can be used to zoom, pan and rotate the
view in the View Window.
(More Info) 
. We'll
go through some simple exercises here to get you used to these
functions.
- Zooming
- Zoom in to a portion of the display using the rubber band feature
of the IDV. Hold the
Shift key
down on the keyboard.
In the View Window, click
the left mouse button (MB1) and drag the mouse to create a box that
covers the region you want to zoom to, and then release the mouse
button.
- To restore the display to the full projection, press
the
Ctrl and
r keys simultaneously
(Ctrl-r).
- You can also zoom by holding the Shift key and the
right mouse button (MB3) down and move the mouse
forward and back. Try zooming this way.
- Restore the display to its original position with
Ctrl-r
- You can also zoom by holding the
Shift
key and pressing
the up (zoom in) and down (zoom out) arrows on the keyboard.
You have to click in the window first. Try zooming this way.
- Restore the display to its original position.
- Finally, if you have a mouse with a scroll wheel, you
can zoom out by rolling the wheel forward and zoom in
by scrolling the wheel toward you (e.g. bring the view
closer). When you are done, restore the display to its
original position.
- Panning
- You can pan the display by holding the
Ctrl key and the
right mouse button (MB3) down and move the mouse
around. The display will pan in the direction of the
mouse movement. Try this.
- Restore the display to its original position.
- You can also pan the display by holding the
Ctrl key and
pressing the arrow keys on the keyboard. Using this method,
the display will pan in the direction of the arrow. Try
it out. You have to click in the window first.
- Restore the display to its original position.
- Rotating
- The main view window is configured as a 3-D display. You
can rotate the 3-D view by holding down the right mouse button
(MB3) and moving the mouse. Try rotating the display
using this method. It takes some getting used to.
- Restore the display to its original position.
- You can also rotate the display using the arrow keys on
the keyboard. Click in the window and then try using
the arrow keys to rotate the 3-D box.
- Restore the display to its original position.
- Finally, if you have a scroll wheel on your mouse,
can use this to rotate the display. Holding down the
Ctrl key while scrolling
will rotate along the Y axis of the display; holding
the Shift key will rotate
about the X axis. Holding the
Shift+Ctrl keys at the same
time will rotate about the Z axis.`
the keyboard. Click in the window and then try using
the arrow keys to rotate the 3-D box.
- Pulling it all together
Try different combinations of zooming, panning and rotating.
When you are finished, restore the display to its original
position.
- Moving Selector Points
- Some displays have selector points that can be manipulated
interactively to change their position.
- In the sample data display, move the cursor over the
endpoint of the red cross section line, click the left mouse button
and drag the mouse to move the point.
- Rotate the display to see the change in the cross section in
the main view window
- You can change the default behavior through the
Navigation tab of the User Preferences accessed
by the menu.
Unidata IDV Workshop for version 6.2u2 > Starting the IDV/GUI Basics > IDV Basic Concepts