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Chapter 9 Formula Editor 301
Using Functions
• Pat Match returns True (1) if the pattern is found in the string, or it returns False (0) if the pattern
was not found in the string.
• To use regular expressions instead of patterns, use Regex Match.
To build a formula that contains a character pattern
1 Open the formula editor by right-clicking a column name in the data grid and selecting Formula.
2 Select an expression in the formula editing area by clicking it. (It is selected when there is a red
outline around it.)
3 Click the menu on the function browser and select Character Pattern, as shown in Figure 9.12.
The character pattern functions now appear in the list below the menu.
Figure 9.12 Select Character Pattern
9Formulas
4 Select which function to insert in the formula. For descriptions of each function, see “Character
Pattern Functions,” p. 465.
Comparing Values
You can create a formula that compares the values of two arguments. You do this 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 1, and false evaluates as 0.
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 “Comparing Values,” p. 301.)