Depth areas are S-57 objects used to depict depth ranges between contours in Electronic Navigation Charts (ENC). The Generate Depth Areas (Selected Feature) tool is used to create these depth areas. It updates depth areas that exist, creates depth areas as needed, and deletes areas that are no longer relevant based on a given extent and compilation scale. Boundaries of the extent are defined by selecting a polygon feature.
- Start ArcMap.
- Load data in the map if necessary.
- On the main menu, click Customize > Toolbars > Nautical.
Type the compilation scale in the Compilation Scale text box and press Enter.
You cannot use 0 (zero), negative values, or nonnumeric characters.
- On the main menu, click Customize > Toolbars > Production Editing.
- Click the Production Start Editing button on the Production Editing toolbar.
- If necessary, select the workspace you want to edit and click OK.
- Click the Select Features button on the Tools toolbar.
- Select the polygon you want to define as the extent you want to edit.
For example, select the boundary of a hydrographic survey or create a new polygon.
- On the Nautical toolbar, click Nautical > Generate Depth Areas (Selected Feature).
The Generate Depth Areas dialog box appears and is prepopulated with values from your data.
- Accept the default value or type a value that is the highest contour in the Shallowest Depth Band or Drying Height text box.
- Accept the default value or type a value that is the deepest contour in the Deepest Depth Band text box.
- Leave the Merge Depth Areas check box checked if you want to merge the newly created depth areas with those that preexisted.
For this to occur, the values for DRVAL1 and DRVAL2 attributes must match.
- Click OK.
The following layers are required:
ClosingLinesL is optional and can be used to close boundaries.
New depth areas are created and existing depth areas are updated or deleted as needed.