MATLAB Programming

Regular Expressions
Operator
Usage
\r Carriage return
\t Horizontal tab
\v Vertical tab
\oN or \o{N}
\xN or \x{N}
\char
Character of octal value N
Character of hexadecimal value N
If a character has special meaning in a regular expression,
precede it with backslash (\) to match it literally.
Octal and Hexadecimal — \o, \x
Use \x and \o in an expression to find a comma (hex 2C) followedbyaspace
(octal 40) followed by the character 2:
numstr = 'Easy as 1, 2, 3';
[mat idx] = regexp(numstr, '\x2C\o{40}2', 'match', 'start')
mat =
', 2'
idx =
10
Grouping Operators
When you need to use one of the regular expression operators on a number of
consecutive elements in an expression, group these elements together with
one of the grouping operators and apply the operation to the entire group. For
example, this command matches a capital letter followed by a numeral and
then an optional space character. These elements have to occur at least two
times in succession for there to be a match. To apply the {2,} multiplier to
all three consecutive characters, you can first make a group of the characters
and then apply the (?:) quantifier to this group:
regexp('B5 A2 6F 63 R6 P4 B2 BC', '(?:[A-Z]\d\s?){2,}', 'match')
ans =
'B5 A2 ' 'R6 P4 B2 '
3-37