PGPLOT Module: PGQVP -- inquire viewport size and position


SUBROUTINE PGQVP (UNITS, X1, X2, Y1, Y2)
INTEGER UNITS
REAL X1, X2, Y1, Y2

Inquiry routine to determine the current viewport setting.
The values returned may be normalized device coordinates, inches, mm,
or pixels, depending on the value of the input parameter CFLAG.


Arguments
UNITS (input) : used to specify the units of the output parameters:
UNITS = 0 : normalized device coordinates
UNITS = 1 : inches
UNITS = 2 : millimeters
UNITS = 3 : pixels
Other values give an error message, and are
treated as 0.
X1 (output) : the x-coordinate of the bottom left corner of the
viewport.
X2 (output) : the x-coordinate of the top right corner of the
viewport.
Y1 (output) : the y-coordinate of the bottom left corner of the
viewport.
Y2 (output) : the y-coordinate of the top right corner of the
viewport.