2011

Table Of Contents
4 Continue creating the polygon by following the steps in the previous
procedure.
Quick Reference
MPOLYGON
Create polygon
Create Mpolygon
Menu
MPolygon
Icon
MPOLYGONCommand Line
Modifying Polygon Objects
You can edit a polygon by editing its boundaries (adding, deleting, moving,
or disconnecting them), changing its fill properties, moving nodes in a
boundary, changing individual boundary types to Inner or Outer, or
rebalancing the polygon. For explanations of these terms, see
Overview of
Polygons
(page 955).
NOTE This functionality is for drawing objects only. For information about editing
polygonal geospatial feature data, see
MAPPOLYGONEDIT (page 1665).
Rebalancing Polygons
If you add or delete boundaries, be sure to rebalance the polygon. A polygon
becomes unbalanced when it does not have correct information about which
is an inner boundary and which is an outer boundary. When you rebalance
the polygon, the nesting order follows an alternating outer/inner/outer order.
Area of a Polygon
The area between an inner and outer boundary is filled or not filled in an
alternating manner. In a balanced polygon, the filled area represents the total
area of the polygon object. The total area of the polygon is calculated by
subtracting the sum of the area of all inner boundaries from the sum of the
area of all outer boundaries.
962 | Chapter 6 Creating and Editing Data