Curve Tool: Zooming In and Out

There are three ways to change the position and time (or master position) scales:

Enter the scales manually in the Options dialog box. See Adjusting the Scales for details.
Drag a scale bar's major tick mark. See Using the Scale Bars for details.
Use the Zoom In, Zoom Out, and Fit to Screen commands. This method is described below.

The Zoom In, Zoom Out, and Fit to Screen commands all adjust both the time (or master position) and position scales simultaneously. You must use one of the other methods listed above if you want to adjust the scales independently, or if you want to adjust the velocity or acceleration scales.

To zoom in or out on the center of the screen:

On the View menu, click Zoom In or Zoom Out, or use the corresponding toolbar buttons $image\but_zmi.gif$ and $image\but_zmo.gif$ respectively.

While zooming in and out with the above method is useful, a more powerful way to zoom and pan simultaneously is to combine the pointer and keyboard or mouse wheel.

To zoom in or out centered on the pointer:

Position the pointer on the portion of the Graph view you want to center on.
Press the PLUS SIGN (+) on the numeric keypad to zoom in or the MINUS SIGN (-) on the numeric keypad to zoom out. You can also hold down the CTRL key and scroll the mouse wheel up to zoom in or down to zoom out.
Each time the Graph view is zoomed in this manner, the pointer will be positioned in the center of the Curve Tool so further zooms will not cause unexpected panning.

To fit all visible curves on the screen:

Ensure that you have all curves that you want to fit on the screen marked as visible. See Selecting Which Curves to Display for details.
On the View menu, click Fit to Screen, or use the corresponding toolbar button $image\but_fts.gif$ . You can also use the ASTERISK (*) key on the numeric keypad to issue this command.