gpm - Polymarker output primitive to draw symmetric symbols

       To use GKS routines, load the NCAR GKS-0A library ncarg_gks.

       #include <ncarg/gks.h>

       void gpolymarker(const Gpoint_list *point_list);

       Copyright (C) 1987-2009
       University Corporation for Atmospheric Research
       The use of this Software is governed by a License Agreement.

UNIX                                               March 1993                                        GPM(3NCARG)

       GPM  (Polymarker)  -  the  polymarker  output  primitive  draws  selected symmetric symbols to mark user-
       specified coordinate positions.

       N           (Integer, Input) - The number of markers to be drawn.  N must be greater than zero.

       X (N)       (Real Array, Input) - The X coordinates of the N markers to be drawn, in world coordinates.

       Y (N)       (Real Array, Input) - The Y coordinates of the N markers to be drawn, in world coordinates.

       gpm - Polymarker output primitive to draw symmetric symbols

       Online: gsmk, gsmksc, gscr, gspmci, gqmk, gqmksc, gqpmci, point, points, ngdots, gpolymarker

       Hardcopy: User's Guide for NCAR GKS-0A Graphics; NCAR Graphics Fundamentals, UNIX Version

       CALL GPM (N, X, Y)

       By default, the polymarker type is an asterisk. To select other polymarker types and attributes, see  the
       man page for gsmk.

       Note  that  the  coordinate  pairs  must  be  in world coordinates and not user coordinates.  Among other
       things, this means that the log scaling and mirror-imaging features available via the SET  call  and  the
       SPPS functions for drawing dots and markers are not applicable here.