strupper( ) — Convert string to uppercase (lowercase)

Title stata.com

Syntax Description Remarks and examples Conformability

Diagnostics Also see

Syntax

string matrix strupper(string matrix s)

string matrix strlower(string matrix s)

string matrix strproper(string matrix s)

Description

strupper(s) returns s, converted to uppercase.

strlower(s) returns s, converted to lowercase.

strproper(s) returns a string with the ﬁrst letter capitalized and any other letters capitalized that

immediately follow characters that are not letters; all other letters are converted to lowercase.

When s is not a scalar, these functions return element-by-element results.

Remarks and examples stata.com

strproper("mR. joHn a. sMitH") returns Mr. John A. Smith.

strproper("jack o’reilly") returns Jack O’Reilly.

strproper("2-cent’s worth") returns 2-Cent’S Worth.

Also, Stata understands strupper(), strlower(), and strproper() as synonyms for its own

upper(), lower(), and proper() functions, so you can use the str*() names in both your Stata

and Mata code.

Conformability

strupper(s), strlower(s), strproper(s):

s: r × c

result: r × c

Diagnostics

None.