A name is simply something to call an item. When you assign the numeric value 3 to a variable in the expression a = 3, a is a name.
Commands and functions have names, too. In the expression Log( 4 ), Log is the name of the logarithmic function.
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Names must start with an alphabetic character or underscore and can continue with the following:
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When comparing names, JMP ignores whitespace characters (such as spaces, tabs, and line endings). Upper case and lower case characters are not distinguished. For example, the names Forage and for age are equivalent, despite the differences in white space and case.
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You can still have a name that is any other sequence of characters. If the name does not follow the rules above, it needs to be quoted and placed inside a special parser directive called Name(). For example, to use a global variable with the name taxable income(2011), you must use Name() every time the variable appears in a script:
注意：Name() is not a function that gets called when the script is run; it is a syntax marker for expressing names that are ambiguous. To evaluate the name of a column in an expression, use Column().