Graphic Markers

  In addition to the character set which includes symbols, GreG can plot any regular polygon under 4 different styles of any size. The current type of graphic marker is set by command

SET MARKER Nsides Istyle Size
where Nsides is the number of sides (or of summits) of the regular polygon, Size is the diameter of the marker in physical units, and Istyle defines one of the four possible styles according to

• 0 - Regular empty polygon
• 1 - Vertex connection only. The sides of the polygon are not drawn, but the radii connecting the polygon center to the summits are plotted.
• 2 - Fancy starred marker. The star with Nsides summits is drawn. The inner radius of the star is half the outer radius.
• 3 - Filled regular polygon. The filling may be a rather slow process on some devices. Also the filling may fail for very high resolution supports (e.g. a pen plotter with a very thin pencil). If this happens, please notify the authors of GreG .

The number of sides is not limited, but the larger this number, the slower the plot will be...