Absolute value and string to numeric conversion.
ABS(X) is the absolute value of the elements of X. When
X is complex, ABS(X) is the complex modulus (magnitude) of
the elements of X.
See also ANGLE23I0OS5, UNWRAP .
ABS(S), where S is a MATLAB string variable, returns the
numeric values of the ASCII characters in the string.
It does not change the internal representation, only the
way it prints.
See also SETSTRT7JKFY.