
The following figure shows how the polygon is drawn.
As shown in the figure, the polygon starting point is X=40, Y=100. The first segment
(S1) is drawn from the starting point to X=20, Y=220. The second segment is drawn
from X=20, Y=220 to X=160, Y=200. The remaining two segments (S3 and S4) follow
the same pattern. Although provided in this example, the last observation (X=40,
Y=100) is not required. If not provided in the data, the POLYGON statement draws the
last segment (S4) automatically in order to close the polygon.
Drawing Multiple Polygons
For multiple polygons, the POLYGON data ID column specifies a unique identifier for
all of the observations ...