MATLAB Interface 3

Question 1

Which MATLAB function creates a modal dialog that pauses execution until the user responds?

Accepted Answer

uiwait

Answer

uiwait suspends execution of the calling function until the specified figure is closed or uiresume is called.

Question 2

In App Designer, which layout component automatically arranges child components in rows and columns?

Accepted Answer

GridLayout

Answer

GridLayout divides the parent container into a grid and children are placed in specified row/column positions.

Question 3

What does setting the 'Enable' property of a uicontrol to 'off' do?

Accepted Answer

Disables interaction but keeps the component visible

Answer

Setting Enable to 'off' grays out the control so it is visible but cannot be interacted with by the user.

Question 4

Which MATLAB function saves a figure as an image file programmatically?

Accepted Answer

exportgraphics

Answer

exportgraphics is the recommended modern function for saving figures to formats like PNG, PDF, and EPS with fine control.

Question 5

In a MATLAB listbox (uicontrol Style='listbox'), which property holds the index of the currently selected item?

Accepted Answer

Value

Answer

The Value property of a listbox uicontrol stores the index (or indices for multi-select) of the selected item.

MATLAB - MATLAB Technical Computing Practice Test