PRO

Syntax | Arguments | Keywords | Examples | Version History

The PRO statement defines an IDL procedure.

Note
For information on using the PRO statement, see Creating and Running Programs in IDL and Creating Procedures and Functions (Application Programming).

Syntax

PRO Procedure_Name, argument₁, ..., argument_n

   . . .

END

Arguments

argument_n

A parameter that is passed to the procedure.

Keywords

None.

Examples

The following example demonstrates the use of arguments in a PRO statement:

PRO ADD, A, B
   PRINT, 'A = ', A
   PRINT, 'B = ', B
   A = A + B
   PRINT, 'A = ', A
END

PRO MYPROCEDURE
   X = 5
   ; Call the ADD procedure:
   ADD, 3, X
END

MYPROCEDURE

After you run myprocedure.pro, IDL returns:

A =   3 
B =   5 
A =   8 

Version History