Using JMP - SAS

Appendix B Formula Functions Reference 411
Comparison Functions
Regex Match
Regex Match is similar to Pat Match. Regex Match executes a pattern match using the source in the first
argument and the pattern in the second argument. Regex Match uses a regular expression for the second
argument and returns a list of information about the result of the match.
A simpler function, Regex (“Regex” on page 407), is also available. Regex returns a string value rather than a
list, so Regex is usually easier to use in the Formula Editor than RegEx Match.
Comparison Functions
You can create a formula that compare the values of two arguments by using the comparison function. Each
comparison relationship evaluates as true or false based on numeric magnitudes or character rankings. A true
relationship evaluates as one, and false evaluates as zero.
Comparisons are useful when you include them in conditional expressions, but they can also stand alone as
numeric expressions if neither term in comparison is missing. A relational symbol’s arguments can be any
two expressions. However, both arguments in a comparison function must be of the same data type. Also
note that:
• JMP displays an error if you use a single “=” in a conditional where “==” is expected.
• The Formula Editor uses the International Utilities package when comparing character strings. This
package contains different rankings for each international character set and takes diacritical marks into
consideration.
• You should not use comparison operators to specifically compare to a missing value. Instead, use the Is
Missing function to detect a missing value.
See the Scripting Guide for details about syntax.
< Less than
> Greater than
= Greater than or equal to
== Equal to
!= Not equal to
a