


PLVPAS(3)                   PLplot API                  PLVPAS(3)


NAME
       plvpas - Specify viewport using coordinates and aspect ratio

SYNOPSIS
       plvpas(xmin, xmax, ymin, ymax, aspect)

DESCRIPTION
       Device-independent  routine  for setting up the viewport.  The viewport
       is chosen to be the largest with  the  given  aspect  ratio  that  fits
       within  the  specified  region  (in terms of normalized subpage coordi-
       nates).  This routine is functionally equivalent to  plvpor(3)  when  a
       ``natural''  aspect ratio (0.0) is chosen.  Unlike plvasp(3), this rou-
       tine reserves no extra space at the edges for labels.

       Redacted form: plvpas(xmin, xmax, ymin, ymax, aspect)

       This function is used in example 9.

ARGUMENTS
       xmin (PLFLT, input)
              The normalized subpage coordinate of the left-hand edge  of  the
              viewport.

       xmax (PLFLT, input)
              The  normalized subpage coordinate of the right-hand edge of the
              viewport.

       ymin (PLFLT, input)
              The normalized subpage coordinate of  the  bottom  edge  of  the
              viewport.

       ymax (PLFLT, input)
              The  normalized  subpage coordinate of the top edge of the view-
              port.

       aspect (PLFLT, input)
              Ratio of length of y axis to length of x axis.


AUTHORS
       Geoffrey Furnish and Maurice LeBrun wrote and  maintain  PLplot.   This
       man  page  was  automatically  generated from the DocBook source of the
       PLplot  documentation,  maintained  by  Alan  W.   Irwin   and   Rafael
       Laboissiere.

SEE ALSO
       PLplot documentation at http://plplot.sourceforge.net/resources.










                          November, 2007                        1


