# Zooming and Panning

ZMap 2.2 lets you zoom in and out in the domain and range as well as pan (shift) the coordinate system.

### Zooming

You can zoom using buttons on the toolbar or by right-clicking on domain or range. The buttons on the toolbar function as follows:

> | zooms in the domain around the current center of the window
> | zooms out the domain around the current center of the window
> | restores the previous view prior to last zoom or pan operation in the domain

> | zooms in the range around the current center of the window
> | zooms out the range around the current center of the window
> | restores the previous view prior to last zoom or pan operation in the range

The same options are available when you right-click on domain or range: a popup menu will open containing the options to zoom in or out.

You can also zoom in by dragging your mouse across a desired rectangular area in the domain or the range. You will see a sketched rectangle following your mouse drag. If you let go, you will zoom into the selected rectangle. You can undo this zoom operation by pressing the corresponding undo button.

### Panning

Panning lets you shift the real and/or imaginary axis left, right, up, or down. ZMap let's you pan in two ways:

> Re-center:
>   when you double-click on a point in domain or range, that point will become the new center of the view.
> Right-Click:
>   when you right-click on domain or range, a popup menu will open, offering you choices to pan up, down, right, or left.

Note tha re-centering, panning, and zooming can be undone any time.

A final way to zoom or pan is to click the Global Options button and enter the minimum and maximum values manually, using simple numbers (see global options). You may not use constants such as `Pi` or computed values such as `Pi/2 - atan(1)` here. The undo operations will work again, if appropriate.

ZMap (c) 2002-2007, Bert G. Wachsmuth
Web: pirate.shu.edu/~wachsmut
Email: wachsmut@shu.edu