Evaluating cell rectangularity

The Feature Rectangularity Check is used to check polygon features that must be rectangular. It unites features based on a chosen field and checks the resulting union for rectangularity. If the selected features are not rectangular, then the nonrectangular records are returned by this check.

All data held in S-57 format is contained in rectangular cells. S-57 Appendix B.1 in section 2.2 states that cells must be rectangular, meaning that they must be defined by two meridians and two parallels. This check should be run on the M_COVR subtype based on its FCSubtype attribute field to see if the cell is rectangular. The union of all MetaDataA M_COVR features should always be rectangular in shape.

Steps:

1. Start ArcMap.
2. On the main menu, click Customize > Toolbars > Data Reviewer.
3. Click the Select Data Check drop-down arrow on the Data Reviewer toolbar, click the plus sign (+) next to Nautical Checks, then click Feature Rectangularity Check.

   The Feature Rectangularity Check Properties dialog box appears.
4. Click the Feature Class/Subtype drop-down arrow and choose the feature class MetaDataA and subtype M_COVR.

   A list of all the fields for the selected feature class or subtype appears in the Union Field area.

5. Choose FCSubtype as the union field for checking cell rectangularity.

   You can only choose one field.

6. When running this check on M_COVR, always check the Always Run on Full Database check box.

   This allows the check to consider the M_COVR features as a whole when run on the current extent. This setting is saved for subsequent uses of this check.

7. If necessary, type descriptive text for the check results in the Notes text box in the Reviewer Remarks area.
8. If necessary, click the Severity drop-down arrow and choose a value that indicates the priority of the check's results in the Reviewer Remarks area.

   The severity indicates the importance of the check result. The values range from 1 to 5, with 1 being the highest priority and 5 being the lowest.

Example of Feature Rectangularity Check Properties dialog box inputs

9. Click OK.
10. Click the Run Data Check button on the Data Reviewer toolbar.

    The Features to Validate dialog box appears. If the Always Run on Full Database check box is checked on the Feature Rectangularity Check Properties dialog box, the Current Extent and Definition Query options are also disabled.
11. Choose an option in the Features to Validate area.
    • Current Extent—The check is run on the current map extent, which is controlled by the map scale.
    • Definition Query—The check is run on the features that are displayed based on definition queries that have been created for the feature class.
    • Full Database—The check is run on all the features in the feature class.
12. Click OK.

    The check is run on the extent specified on the Features to Validate dialog box.

    When the check finishes, a check results dialog box appears.

13. Do one of the following:
    • If you want to browse the results in the Browse Features window, choose the Browse Results option.
    • If you have started a Reviewer session and want to record the results in the Reviewer table, choose the Write to Reviewer Table option.
14. Click OK.

Depending on what you chose in the check results dialog box, the Browse Features window appears with the check results selected in the map, or a message appears that states the results have been written to the Reviewer table. In the Reviewer table the reason for error is found in the RevStatus column.