Name:         GRMKER

Purpose:      draw graph markers

Category:     GRAPHICS

File:         pgplot.src

Author:       T.J. Pearson

Use:          see description below.

Description:

            SUBROUTINE GRMKER (SYMBOL,ABSXY,N,X,Y)
      
       GRPCKG: Draw a graph marker at a set of points in the current
       window. Line attributes (color, intensity, and  thickness)
       apply to markers, but line-style is ignored. After the call to
       GRMKER, the current pen position will be the center of the last
       marker plotted.
      
       Arguments:
      
       SYMBOL (input, integer): the marker number to be drawn. Numbers
             0-31 are special marker symbols; numbers 32-127 are the
             corresponding ASCII characters (in the current font). If the
             number is >127, it is taken to be a Hershey symbol number.
             If -ve, a regular polygon is drawn.
       ABSXY (input, logical): if .TRUE., the input corrdinates (X,Y) are
             taken to be absolute device coordinates; if .FALSE., they are
             taken to be world coordinates.
       N (input, integer): the number of points to be plotted.
       X, Y (input, real arrays, dimensioned at least N): the (X,Y)
             coordinates of the points to be plotted.

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