Name:         PGQVSZ

Purpose:      inquire size of view surface

Category:     GRAPHICS

File:         pgplot.src

Author:       T.J. Pearson

Use:          see description below.

Description:

            SUBROUTINE PGQVSZ (UNITS, X1, X2, Y1, Y2)
            INTEGER UNITS
            REAL X1, X2, Y1, Y2
      
       This routine returns the dimensions of the view surface (the maximum
       plottable area) of the currently selected graphics device, in 
       a variety of units. The size of the view surface is device-dependent
       and is established when the graphics device is opened. On some 
       devices, it can be changed by calling PGPAP before starting a new
       page with PGPAGE. On some devices, the size can be changed (e.g.,
       by a workstation window manager) outside PGPLOT, and PGPLOT detects
       the change when PGPAGE is used. Call this routine after PGPAGE to 
       find the current size.
      
       Note 1: the width and the height of the view surface in normalized
       device coordinates are both always equal to 1.0.
      
       Note 2: when the device is divided into panels (see PGSUBP), the
       view surface is a single panel.
      
       Arguments:
        UNITS  (input)  : 0,1,2,3 for output in normalized device coords, 
                          inches, mm, or device units (pixels)
        X1     (output) : always returns 0.0
        X2     (output) : width of view surface
        Y1     (output) : always returns 0.0
        Y2     (output) : height of view surface

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