Migrating COGO coverages to the parcel fabric

This topic applies to ArcGIS for Desktop Standard and ArcGIS for Desktop Advanced only.

You can use the Import Fabric Data wizard to migrate COGO coverages to a parcel fabric. To open the Import Fabric Data Wizard dialog box, right-click your fabric in the Catalog window, point to Import, and click Fabric Data.

You can also use the Import Fabric Data Wizard to migrate parcel feature class data that has been correctly formatted into a dataset of related point, line, and polygon feature classes. This format is known as a fabric source and is the same format as a COGO coverage. A fabric source should consist of three feature classes: polygons, lines, and points. All three feature classes need to have the same name, but with the lines feature class being underscored by an _arc, the points feature class being underscored by an _node, and the polygons feature class being underscored by an _polygon. Like COGO coverages, the lines feature class needs to have COGO fields as well as topological fields such as FROMPT, TOPT, LEFTPOLY, and RIGHTPOLY.

The ArcScripts Parcel Fabric Source Builder toolbar provides utilities for generating a parcel fabric source from an existing polygon or line feature class.

Note:

When migrating parcel feature class data to the parcel fabric, it is easier to migrate a geodatabase topology of polygons and lines instead of formatting the data into a fabric source.

Steps:

To migrate a COGO coverage using the Import Fabric Data Wizard, follow these steps:
1. In the Catalog window, right-click your parcel fabric and point to Import > Fabric Data.

The Import Fabric Data wizard appears.

2. Click the browse button and navigate to your COGO coverage on the Select a feature dataset dialog box.
If you are migrating feature classes formatted into a fabric source, navigate to the feature dataset containing the feature classes.

The COGO coverage name appears in the Fabric source selected for import text box.

3. Click Next.
4. Click the Direction and angle units drop-down arrow to choose your direction or angle units.
5. Click the Direction type drop-down arrow to choose your direction type.
6. Click the check box next to Compute Area field when not specified if you want the importer to compute the parcel area from the COGO information on the parcel lines.
7. Select the area units you want to use.
You can either import a user-entered parcel area value in an Area field on the fabric source parcel polygons table or have the importer calculate the parcel area for you. The importer calculates parcel area from the COGO information on the parcel lines. Ideally, the parcel area should match its stated area on the survey plan.
8. Click Next.
9. Type a radial point tolerance.

The radial point tolerance is the maximum difference allowed between two successive radii for them to be considered the same radius. For example, in a cul-de-sac, all curved parcel boundaries should have the same radius, with one center point.

10. Type a control point match tolerance if there are already control points in your parcel fabric. Fabric points lying within the specified tolerance of the control point will be associated with the control point.
11. Choose a value from the Inversed line accuracy category.

If your parcel lines do not have COGO attributes, the data migration process will automatically generate the COGO attributes by inverting the line shape geometry. These inverted values may not match the record of survey and should be given a relatively low accuracy category.

12. Click Next to view the summary of your data migration settings.
13. Check the Log import results to a file check box if you want to save a log of your data migration results. Click the browse button to navigate to the location where you want to save your log file.
14. Click Finish to begin the data migration process.