Scripting Guide • Programming Methods • Advanced Scoping and Namespaces • Referencing Namespaces and Scopes
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Referencing Namespaces and Scopes
There are a number of factors in resolving a named variable reference. Namespace References describes the named variable references that are resolved for specific situations.
Namespace References 
Form
Reference Type
Reference Rule
Creation Rule
a
Unqualified
If the Names Default To Here mode is on, JMP looks for the variable in these locations:
•
Local namespace2
•
Here namespace
•
current data table
If the Names Default To Here mode is off, JMP looks for the variable in these locations:
•
Local namespaceb
•
Here namespace
•
Global namespace
•
current data table
•
If the Names Default To Here mode is on, then JMP creates the variable in the Local namespaceb or in the Here namespace.
•
If the Names Default To Here mode is off, then JMP creates the variable in the Local namespaceb or in the Global namespace.
:a
Current data table
JMP looks for the variable in the current data table.
(Not applicable)
::a
Global:a
Global
JMP looks for the variable in the Global namespace.
JMP creates the variable in the Global namespace.
ns:a
dt:a
Here:a
"name":a
expr:a
Qualified
JMP looks for the variable in the specified namespace. If the variable is not found, an error results.
JMP creates the variable in the specified namespace. Any previous values are replaced.
ns["a"]
ns[expr]
Subscript
JMP looks for the variable in the specified namespace. If the variable is not found, an error results.
JMP creates the variable in the specified namespace. Any previous values are replaced.
Platform:a
Qualified
JMP looks for the variable in the encapsulating platform.
JMP creates the variable in the encapsulating platform.
Local:a
Qualified
JMP looks for the variable within any nested local function, up to and including a function call boundary. See Example of Local:a.
JMP creates the variable in the innermost nested local function or function call boundary.
Window:a
Qualified
JMP looks for the variable in the encapsulating New Window window namespace.
JMP creates the variable in the encapsulating New Window window namespace.
Box:a
Qualified
JMP looks for the variable in the encapsulating Context Box namespace contained in a New Window window.
JMP creates the variable in the encapsulating Context Box namespace contained in a New Window window.
1
These forms existed in JMP 8. In JMP 9 and later, a, :a, and ::a have the same meaning with the Names Default To Here mode turned off.

2
If the current point of execution is in a user-defined function, or a Local or Parameter JSL function body, then the Local namespace is used.

Example of Local:a
Sample Script
Log Output
 
Delete Symbols();
Local( {d1l1 = 12},
	local:f1f1 = Function( {fa1, fa2},
		{fl1 = 99},
		local:fa12 = fa1 + fa2;
		Local( {d2l1 = 56},
			local:l2l2 = 78;
			Show( fa12 );
			Show( fl1 );
			Try( Show( d1l1 ), Write( "\!n\!n***Error=" || Char( exception_msg ) || "\!n" ) );
			Show Symbols();
		);
		local:fa12;
	);
	f1f1( 2, 3 );
);
 
 
fa12 = 5;
fl1 = 99;
 
***Error={"Name Unresolved: d1l1"(1, 2, "d1l1", d1l1 /*###*/)}
 
 
// Local
 
d2l1 = 56;
l2l2 = 78;
 
// 2 Local
 
// Local
 
fa1 = 2;
fa12 = 5;
fa2 = 3;
fl1 = 99;
 
// 4 Local
 
// Local
 
d1l1 = 12;
 
// 1 Local
 
// Global
 
exception_msg = {"Name Unresolved: d1l1"(1, 2, "d1l1", d1l1/*###*/)};
 
 
// 1 Global
 
5