HP 39gs Graphing manual Zoom within a graph, To jump directly to a value To turn trace on/off

To jump directly to a value

To turn trace on/off

Zoom within a graph

ZOOM options

To jump straight to a value rather than using the Trace

function, use the menu key. Press , then enter

a value. Press to jump to the value.

If the menu labels are not displayed, press first.

•Turn off trace mode by pressing .

•Turn on trace mode by pressing .

•To turn the coordinate display off, press .

One of the menu key options is . Zooming redraws the plot on a larger or smaller scale. It is a shortcut for changing the Plot Setup.

The Set Factors... option enables you to set the factors by which you zoom in or zoom out, and whether the zoom is centered about the cursor.

Press , select an option, and press . (If

is not displayed, press .) Not all options are available in all aplets.

Option	Meaning
Center	Re-centers the plot around the
	current position of the cursor without
	changing the scale.
Box...	Lets you draw a box to zoom in on.
	See “Other views for scaling and
	splitting the graph” on page 2-13.
In	Divides horizontal and vertical
	scales by the X-factor and Y-factor.
	For instance, if zoom factors are 4,
	then zooming in results in 1/4 as
	many units depicted per pixel. (see
	Set Factors...)
Out	Multiplies horizontal and vertical
	scales by the X-factor and Y-factor
	(see Set Factors...).
X-Zoom In	Divides horizontal scale only, using
	X-factor.
X-Zoom Out	Multiplies horizontal scale, using
	X-factor.

Aplets and their views 2-9