Views menu The most commonly used zoom options are also available on the Views menu. These are:

Autoscale

Decimal

Integer

Trig.

These options—which can be applied whatever view you are currently working in—are explained in the table immediately above.

Testing a

A useful way of testing a zoom is

zoom with

to divide the screen into two

split-screen

halves, with each half showing

viewing

the plot, and then to apply a

 

zoom only to one side of the

 

screen. The illustration at the

 

right is a plot of y = 3sin x. To

 

split the screen into two halves:

 

1.

Open the Views menu.

 

 

Press V

 

2.

Select Split Screen:

 

 

Plot Detail.

 

 

The result is shown at the

 

 

right. Any zoom operation

 

 

you undertake will be

 

 

applied only to the copy of the plot in the right-hand half of

 

 

the screen. This will help you test and then choose an

 

 

appropriate zoom.

 

Note that you can replace the original plot on the left with the

 

zoomed plot on the right by tapping .

 

To un-split the screen, press P.

Zoom

The following examples show the effects of the zooming options

examples

on a plot of 3 sinx using the default zoom factors (2 × 2). Split-

 

screen mode (described above) has been used to help you see the

 

effect of zooming.

An introduction to HP apps

91

Page 95
Image 95
HP Prime Graphing NW280AAABA manual Testing a, Zoom with, Split-screen, Viewing