`gobjects`

Creates an array of placeholder graphics objects for preallocation.

Category: Graphics > Graphics Objects

Syntax

G = gobjects(n)

Creates an n-by-n array of placeholders.

G = gobjects(sz1, ..., szN)

Creates an array of the given size.

Description

Preallocating a handle array before a loop avoids growing it element by element, and gives it the right class for graphics handles. Each element is an empty placeholder until you assign a handle to it.

Input arguments

n, sz1, ..., szN: Non-negative integer sizes.

Output arguments

G: Array of GraphicsPlaceholder objects, later replaced with real handles.

Example

Preallocate handles

G = gobjects(2, 1);
disp(class(G))
disp(size(G))

Output

matlab.graphics.GraphicsPlaceholder
     2     1

See also

zeros plot ishandle isgraphics