Section 11    Monitoring a Dragging Anchor  11-4 
 
11.1.2  Setting a dragging anchor monitoring 
polygon 
1  Click on the [Menu] button on the left toolbar. 
The menu is displayed. 
2  Click on the [Anchor Watch] button on the menu. 
The [Anchor Watch] dialog box appears. 
3  Select [Polygon] from the [Mode] (dragging anchor monitoring mode selection) combo 
box. 
 
4  Click on the [New] button. 
The data of the [Point] (vertex) list is cleared. 
5  Place the cursor on the chart. 
6  Click to determine the vertex position. Create three or more vertices to create a 
polygon. 
By inputting position coordinates (longitude and latitude) of the vertex position of the polygon in 
the [Point] list, the vertex position can be changed. 
When a polygon is created, the number of vertices is displayed in [(Total:)]. Up to 360 vertices 
can be set. 
 
Creation example: