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Chapter 9 Formula Editor 309
Using Functions
6 Use the table above to help select which function to insert in the formula. For descriptions of each
function, see “Row State Functions,” p. 489.
Using Assignment Functions
Assignment functions work in place. That is, the result returned by the operation (on the right of the
operator) is stored in the argument on the left of the operator and replaces its current value.
Assignment statements are most often used in conjunction with other commands to build a JMP
Scripting Language (JSL) script. You can use the formula editor to create and execute a script in that
column, but this is not recommended because of dependencies and ambiguities that can result. Most
often, scripts are stored as .jsl files, and can be saved with a data table. See “Creating Scripts,” p. 87, for
details. See the JMP Scripting Guide for documentation of all scripting commands.
9Formulas
Note: The first argument of an assignment function must be capable of being assigned. This means
you cannot have an assignment such as 3+=4, because 3 is a constant value that cannot be reassigned.
You must first create a variable (a table variable or local variable) whose value is 3. (See “Adding Table
Variables,” p. 84, for details about table variables. See “Referencing Columns and Table Variables,”
p. 288, for details about local variables). Then use that variable as the left-hand argument of the
assignment function.
To build a formula that contains an assignment function
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 Assignment, as shown in Figure 9.21. The
assignment functions now appear in the list below the menu.
Figure 9.21 Select Assignment from the Function Browser List
4 Select which function to insert in the formula. For descriptions of each function, see “Assignment
Functions,” p. 493.