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276 · User chart control
Corner Points of Area:
After you have defined an Area Object, you can define corner points of the Area object.. Default mode for a new
area without any corner points is Insert, which allow immediate entry of corner points. Other available modes are:
· Select, you can pick up existing corner point for viewing information of it.
· Insert, you can add a new corner point to most close edge of area. See figure below.
· Append, you can add a new corner point to latest edge of area. The latest edge is shown as dashed line. See
figure below.
Difference between Insert and Append modes. There is an original area in left side and upper area is after adding a
corner point using Insert mode and lower area is after adding a corner point using Append mode.
The Insert mode adds a corner point to the closest edge of area. The Append mode adds a corner point after last
corner point.
How to add a new Area of User Chart
An Area of User Chart can be used for example to define safe water area displaying on the ARPA radar. To add a
new User Chart Area proceed as follows:
1. Open Area sheet. Select tick box Enable changes.
2. Press Add button in Area object field.
3. Give a name for area and select tick boxes if it used to Danger Area calculation and/or displaying on radar.
4. In Corner points field select desired mode for adding corner points. (Insert or Append mode).
5. Define corner points on the electronic chart area using cursor and SELECT button.
6. To define more areas continue from step 2.