matlab.graphics.GraphicsPlaceholder Class

Namespace: matlab.graphics
Superclasses: matlab.graphics.Graphics

Default graphics object

Description

The matlab.graphics.GraphicsPlaceholder class defines the default graphics object. Instances of this class appear as:

• Elements of pre-allocated arrays created with gobjects.

• Unassigned array element placeholders

• Graphics object properties that hold object handles, but are set to empty values

• Empty values returned by functions that return object handles (for example, findobj).

Attributes

Sealed	true
ConstructOnLoad	true
HandleCompatible	true

For information on class attributes, see Class Attributes.

Examples

Test for Current Figure

if isempty(get(groot,'CurrentFigure'))
   ... % There is no current figure
end