HP 39g Graphing Calculator - Manual (Page 51)

Option Meaning (Continued)
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.
Y-Zoom In Divides vertical scale only, using
Y-factor.
Y-Zoom Out Multiplies vertical scale only, using
Y-factor.
Square Changes the vertical scale to match the
horizontal scale. (Use this after doing a
Box Zoom, X-Zoom, or Y-Zoom.)
Set
Factors... Sets the X-Zoom and Y-Zoom factors
for zooming. Includes option to
recenter the plot before zooming.
Auto Scale Rescales the vertical axis so that the
display shows a representative piece of
the plot, for the supplied x axis
settings. (For Sequence and Statistics
aplets, autoscaling rescales both axes.)
The autoscale process uses the first
selected function only to determine the
best scale to use.
Decimal Rescales both axes so each pixel = 0.1
units. Resets default values for
XRNG
(-6.5 to 6.5) and YRNG (-3.1 to 3.2).
(Not in Sequence or Statistics aplets.)
Aplets and their views 2-9