U

• uigetdir (Matlab function) — Standard dialog box for selecting a directory
• uint16 (Matlab function) — Convert to 16-bit unsigned integer
• uint32 (Matlab function) — Convert to 32-bit unsigned integer
• uint8 (Matlab function) — Convert to 8-bit unsigned integer
• unix (Matlab function) — Execute a UNIX command and return result
• upper (Matlab function) — Convert string to upper case