Name:         PGSWIN

Purpose:      set window

Category:     GRAPHICS

File:         pgplot.src

Author:       T.J. Pearson

Use:          see description below.

Description:

            SUBROUTINE PGSWIN (X1, X2, Y1, Y2)
            REAL X1, X2, Y1, Y2
      
       Change the window in world coordinate space that is to be mapped on
       to the viewport.  Usually PGSWIN is called automatically by PGENV,
       but it may be called directly by the user.
      
       Arguments:
        X1     (input)  : the x-coordinate of the bottom left corner
                          of the viewport.
        X2     (input)  : the x-coordinate of the top right corner
                          of the viewport (note X2 may be less than X1).
        Y1     (input)  : the y-coordinate of the bottom left corner
                          of the viewport.
        Y2     (input)  : the y-coordinate of the top right corner
                          of the viewport (note Y2 may be less than Y1).

Updates:      Oct 16, 1998: JPT automatically extracted from source.