PMAP Function
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 Action

 Returns the window coordinate equivalent to a specified viewport coordinate,
 or the viewport coordinate equivalent to a specified window coordinate.


 Syntax


  PMAP ( expression#,  n%)

 Remarks
 The argument   expression# specifies the known coordinate, either an x
 coordinate or y coordinate, in the window or in the viewport. The argument
 n% specifies the mapping function and can have one of the four following
 values.
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 If expression is       n must be  Returns.
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 Window x coordinate    0          Viewport x coordinate
 Window y coordinate    1          Viewport y coordinate
 Viewport x coordinate  2          Window x coordinate
 Viewport y coordinate  3          Window y coordinate


 The four  PMAP functions allow you to find equivalent point locations
 between the window coordinates created with the  WINDOW statement and the
 absolute screen coordinates or viewport coordinates as defined by the  VIEW
 statement.

 If no  VIEW statement has been executed, or the most recently executed  VIEW
 statement has no arguments, the viewport coordinates are equivalent to the
 absolute screen coordinates established by the most recently executed
 SCREEN statement.


 See Also

  POINT,  VIEW,  WINDOW


 Example

 See the  WINDOW statement programming example, which uses the  PMAP
 function.