Algorithm (Workflow)

This function, figureisopen, determines if there is an open graphics window in MATLAB. It is part of the SolidGeometry library and was introduced in version 5.1.

Input Parameters

The function does not take any input parameters.

Output

• io: A boolean value indicating if a graphics window is open. Returns true if a window is open, otherwise false.

Algorithm Explanation

The function uses the following steps to determine if a graphics window is open:

1. It calls get(groot, 'Children') to retrieve the list of all open figure windows.
2. It checks if this list is empty using isempty.
3. The result is negated with ~ to set io to true if there are any open figures, and false otherwise.

Additional Code Comments

The commented-out code suggests an alternative method to determine if a figure is open by comparing the positions of two figures:

1. Create a new figure b and compare its position with the current figure a.
2. If their positions are not equal, it implies that a figure is open.
3. Close the newly created figure b.
4. If no figure was open initially, close the current figure a.