The Zoom Sub-Menu; Center; In/Out - HP 39g Master Manual

The Zoom Sub-menu

The next menu key we'll examine is
Pressing the key under
menu, shown right.
The menu is longer than will show in one
screen, so two screen shots have been
included to show most of the menu.
The list which follows covers the purpose of each of the ten options shown
right. The four extra options which follow these are covered as part of the
detailed examination of the VIEWS menu on page 92.

Center

This redraws the graph with proportionally the same scale for each
axis but re-centered around the current position of the cursor. If you
already have a 'nice' scale, this will preserve it, while perhaps showing
a more interesting section of graph.

In/Out

These two options zoom in or out by adjusting the scales by the factor
shown. The default factor is 4x4 but this can be adjusted through the
Set Zoom Factor option later in the menu. The most useful settings
are either 5x5 or 2x2 as these are more likely to give and preserve
'nice' scales.
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pops up a new
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