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Chapter 9 Formula Editor 315
Editing Formulas
Viewing a Formula’s Values from the Formula Editor
While in the Formula Editor, you can see the value of any expression within a formula with the
Evaluate command. For column variables, you get the value at row 1. This is also true for parameters
and expressions that evaluate to a constant value. To view values:
1 While in the formula editor, select the expression you want to know about.
2 Right-click (Ctrl-click on the Macintosh) the selected expression. This displays the menu in
Figure 9.28.
3 Select Evaluate. The current value of the selected expression appears in a yellow box until you move
the cursor.
Figure 9.28 Right-Click to See the Value of an Expression
9Formulas
Viewing a Formula in JSL
You have the option of entering or changing any part of a formula in text mode. Text mode displays the
formula in JMP Scripting Language (JSL). The entire formula (or any of its terms) appears in text
mode when you double-click the white space inside the boxed formula area. The elements of that box
appear as plain text and you can then edit the formula as you would in any text editor.
Any element of a formula can be displayed as a scripting command and then edited. After editing
formula scripting commands, click outside the formula to see its formatted form. For example, the text
for the standardization of weight is (:weight – Col Mean(:weight)) / Col Std
Dev(:weight). To enter an If statement in text form, add pairs of arguments for each If/Then clause
in the statement, and a single last argument for the else clause if needed. In text form, the If statement
in Figure 9.29 looks like this: If(:total!=0, (:count/:total)*100, 0).
Figure 9.29 An If Statement in Formula Mode
Editing Formulas
If you need to change a formula after you have exited the formula editor, right-click (Ctrl-click on the
Macintosh) the column name in the data grid and select Formula.