MATLAB POLYSPACE RELEASE NOTES Bedienungsanleitung PDF herunterladen (Seite 130)

3 Graphics

Handle Graphics

In this section.. .

“Using the Handle” on page 3-74

“Graphics Objects” on page 3-75

“Setting Object Properties” on page 3-77

“Specifying the Axes or Figure” on page 3-80

“Finding the Handles of Existing Objects” on page 3-81

Handle Graphics refers to a system of graphics objects that MATLAB u ses to

implement grap h in g and visualization function s. Each object create d ha s a

fixed set of properties. You can use these prope rties to c ontrol the behavior

and appearance of your graph.

When you call a plotting function, MATLAB creates the graph using various

graphics objects, such as a figure window, axes, lines, text, and so on.

MATLAB enables you to query the value of each property and set the values

of most properties.

For example, the following statement creates a figure with a white background

color a nd without displaying the figure toolbar:

figure('Color','white','Toolbar', 'none')

Using the Handle

Whenever MATLAB creates a graphics object, it assigns an identifier (called a

handle) to the object. You can use this handle to access the object’s properties

with the

set and ge t functions. For example, the follow in g statements create

a graph and return a handle to a lineseries object in

x = 1:10;

y = x.^3;

h = plot(x,y);

You ca n use the handle h to set the properties of the lineseries object. For

example, you can set its

Color property:

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MATLAB POLYSPACE RELEASE NOTES Bedienungsanleitung Seite 130