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Chapter 4: Graphing Features
T:
Z:
A ZOOM
Note:
58
Displays the graph values in a table. The default sample incre-
ment value of the graph's X axis is "1".
Displays the ZOOM menu. Within the ZOOM menu, various
preferences can be set for the graph appearance on zooming in/
out .
The menu items with each function and the sub-menu items are
described below:
There are a myriad of tools under this menu item, by which the
graph can be zoomed in/out in various styles. Press "A" within the
ZOOM menu to select this menu item.
According to the WINDOW setup, the graph will be
1 Auto
zoomed in by adjusting the "Ymin" (the minimum Y
value) and "Ymax" (the maximum Y value) according to
the "Xmin" (the minimum X value) and "Xmax" (the
maximum X value). When this item is selected, the
graph will automatically be redrawn.
The "Auto" sub-menu item is directly affected by how the WIN-
DOW items are set up. Refer to the W key section in this
chapter to learn how to set up the Xmin and Xmax items.
2 Box
A box area can be specified with this sub-menu tool so
that the area within the box will be displayed full
screen.
To select a box area to zoom:
1. While the ZOOM menu item is selected within the
ZOOM window, press 2 to select 2 Box.
2. The graph appears on the screen. Use the cursor
keys to position the cursor at a corner of the
required box area. Press E to mark the point as
an anchor.
3. Once the initial anchor is set, move the cursor to a
diagonal corner to define the box area. When the
required area is squared off, press E.
If a mistake is made, the anchor can be removed by
pressing the C key.
4. The graph will automatically be redrawn.
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