Rebuild Bounding Polygon Automatically

Raster surfaces, point clouds and variable resolution (VR) surfaces created or updated in CSAR format automatically include a bounding polygon that encompasses the entire extents of a coverage. This polygon is not included in the display by default. If you want to view or edit the polygon, you must first add it to the display using the Add Bounding Polygon Layer command. See Add Bounding Polygon Layer for more information.

This command allows you to automatically rebuild a coverage’s bounding polygon if the current polygon is not suitable for the task at hand.

When you select this command, the application attempts to recreate the bounding polygon using specific criteria. The first attempt is made at six levels above the coarsest resolution of the coverage.

The following criteria is used:

• Fewer than 20 polygons in the boundary

• Fewer than 1500 points per polygon

• No holes

• No polygons with fewer than 3 cells

If the boundary cannot be created according to the above criteria, the application will continue trying until the boundary is created successfully, but with a resolution two levels coarser than each previous attempt.

The level of detail used to create the polygon is controlled by the Bounding Polygon Level option in the Coverage category of Tools > Options. This setting is used anytime a coverage is created or updated, which triggers the creation or update of a bounding polygon. This option will also be used when rebuilding the polygon with this command. The default setting is Medium, but can be changed if desired.

Related commands:

• Digitize Bounding Polygon

• Edit Bounding Polygon

• Exporting a Bounding Polygon

Procedure

1. Select the relevant Bounding Polygon layer in the Layers window.

2. Select the Rebuild Bounding Polygon Automatically command.

The bounding polygon is recreated.

3. Select the Save command to save the changes.