Working with Vector Data - Desktop GIS: Mapping the Planet with Open Source Tools - page 30

Figure 3.2: uDig displaying world borders
toolbar above the layer list. This will zoom to include all layers on the
map. This may not be what we want if we just want to look at the full
view of the world_borders layer. To zoom to just its extent, right-click
world_borders in the layer list, and choose Zoom to Layer .
We can also zoom out incrementally by using the Zoom Out tool on the
main toolbar. Unlike the Adjust Current Zoom tool, this tool is a one-shot
affair—you don't interact with the map when using it. With each click,
the map is zoomed out by a fixed amount. By now you've probably
noticed its cohort, the Zoom In tool. Clicking it zooms the map in by a
fixed amount.
One last way we can navigate the map is by panning. To pan the map,
select the Pan Map View tool (actually both this and the Adjust Current
Zoom buttons are tool groups but contain only one tool) from the main