User Manual
92
Chapter 6: Graph Tools
06TOOLS.DOC TI-86, Chap 6, US English Bob Fedorisko Revised: 02/13/01 2:23 PM Printed: 02/13/01 3:01 PM Page 92 of 2206TOOLS.DOC TI-86, Chap 6, US English Bob Fedorisko Revised: 02/13/01 2:23 PM Printed: 02/13/01 3:01 PM Page 92 of 22
BOX
Draws a box to define the graph screen
ZIN
(zoom in) Magnifies the graph around the cursor by factors of
xFact
and
yFact
ZOUT
(zoom out) Displays more of the graph around the cursor by factors of
xFact
and
yFact
ZSTD
Displays the graph in standard dimensions; resets the default window variable values
ZPREV
Reverses the last zoom operation; window variables revert to previous values
ZFIT
Recalculates
yMin
and
yMax
to include the minimum and maximum
y
values of the
selected functions between the current
xMin
and
xMax
ZSQR
Sets equal-size pixels on the x-axis and y-axis; adjusts window variable values in one
direction so that
@
x=
@
y
, while
xScl
and
yScl
remain unchanged; the midpoint of the
current graph (not the axes intersection) becomes the midpoint of the new graph
ZTRIG
Sets built-in window variables appropriate for trigonometric functions in
Radian
mode:
xMin=
L
8.24668071567 xScl=1.5707963267949
(
p
à
2)
yMax=4
xMax=8.24668071567 yMin=
L
4 yScl=1
ZDECM
Sets
@
x=.1
,
@
y=.1
,
xMin=
L
6.3
,
xMax=6.3
,
xScl=1
,
yMin=
L
3.1
,
yMax=3.1
, and
yScl=1
ZDATA
Sets window variable values to display all statistical data points; adjusts
xMin
and
xMax
only; applies to histograms, scatter plots, and stat plots only (Chapter 14)
ZRCL
Uses window variable values stored in the user-defined zoom-window variables (
ZSTO
)
ZFACT
Displays the
ZOOM
FACTORS
screen
ZOOMX
Zooms out by a factor of
xFact
only; ignores
yFact
(page 93)
ZOOMY
Zooms out by a factor of
yFact
only; ignores
xFact
ZINT
Sets integer values on the axes; sets
@
x=1
,
@
y=1
,
xScl=10
, and
yScl=10
; the current
cursor becomes the center of the new graph screen after you press b
ZSTO
Stores current window variable values to user-defined zoom-window variables (
ZRCL
)
To cancel the effect of any
ZOOM
menu item and return
to the default window variabl
e
values, select
ZSTD
.
If you graph a circle but it
appears elliptical, you can
use
ZSQR
to reset the
window variable values so
that the circle graph appears
circular.