Graphics Programs Reference
In-Depth Information
ans =
[]
>> gcf
ans =
1
Exercise 16
The m-file
objects.m
creates a graphic with
assorted objects on it. Run
objects
and try clicking on the objects
to make them current. Investigate what happens when you do
get(gco,'type')
,or
delete(gco)
. (Answer on page 191.)
32 Axes Effects
32.1 The Axis Command
Axes objects have many properties you can modify to alter details such
as tick mark labels, positioning of axes, direction of tick marks, and so
on. These can be changed using the
get
and
set
commands. You can
also change the way axes behave using the
axis
command, which is an
easy way to set some
axis
and related commands to achieve frequently
sought effects. Let us look first at the
axis
command. These are the
available options (adapted from the help entry):
axis([xmin xmax ymin ymax])
sets scaling for the
x
- and
y
-axes on
the current plot.
axis([xmin xmax ymin ymax zmin zmax])
sets the scaling for the
x
-,
y
-, and
z
-axes on the current 3-D plot.
v = axis
returns a row vector containing the scaling for the current
plot. If the current view is two-dimensional,
v
has four components;
if it is three-dimensional,
v
has six components.
axis auto
returns the axis scaling to its default, automatic mode where,
for each dimension, “nice” limits are chosen based on the extents
of all line, surface, patch, and image children.
axis manual
freezes the scaling at the current limits, so that if
hold
is
turned on, subsequent plots will use the same limits.
axis tight
sets the axis limits to the range of the data.
axis fill
sets the axis limits and
PlotBoxAspectRatio
so that the
axis fills the position rectangle. This option only has an effect if
PlotBoxAspectRatioMode
or
DataAspectRatioMode
are manual.
axis ij
puts matlab into its “matrix” axes mode. The coordinate
system origin is at the upper left corner. The
i
axis is vertical and
