MATLAB Interface 2

Question 1

Which MATLAB function opens a file selection dialog box?

Accepted Answer

uigetfile

Answer

uigetfile opens a standard OS file selection dialog and returns the chosen filename and path.

Question 2

In MATLAB App Designer, which property controls whether a UI component is visible to the user?

Accepted Answer

Visible

Answer

The Visible property accepts 'on' or 'off' to show or hide a UI component in App Designer.

Question 3

What does the uicontrol function's 'Style' property set to 'slider' create?

Accepted Answer

A horizontal or vertical draggable slider

Answer

Setting Style to 'slider' in uicontrol creates a draggable slider that returns numeric values within a defined range.

Question 4

Which App Designer callback fires when the value of a numeric edit field changes and the user presses Enter or clicks away?

Accepted Answer

ValueChangedFcn

Answer

ValueChangedFcn triggers when the NumericEditField value is committed by the user pressing Enter or losing focus.

Question 5

How do you programmatically close a MATLAB figure window?

Accepted Answer

close(fig)

Answer

close(fig) closes the specified figure window, triggering any CloseRequestFcn callbacks.

MATLAB - MATLAB Technical Computing Practice Test