Migrating parcel data using the Import Fabric Data wizard
This topic applies to ArcEditor and ArcInfo only.
The Import Fabric Data wizard is opened in the Catalog window. There are two wizards, one for parcel features and one for control points. Parcel fabric source datasets and COGO coverages can be migrated to the fabric using the Import Fabric Data wizard.
Instead of the Import Fabric Data wizard, you can also use the Load A Topology To A Parcel Fabricgeoprocessing tool to migrate data into a parcel fabric.
The parcel fabric importer will scale to import a dataset of any size. Internally, the parcel fabric importer processes parcels in batches. You can modify the MaxBatchParcelsToRead registry value to specify how many parcels are processed at a time.
When parcels are imported in separate sections, the importer will detect the points on the edge of the existing parcel fabric and merge them with the edge points of the data being imported. The importer merges edge points within a tolerance of 10 * x, y tolerance of the parcel fabric's feature dataset. You can find the x,y tolerance of a feature dataset by opening its Properties dialog box and clicking the Tolerance. When merging edge points, the importer will use the attributes of the existing points in the parcel fabric.
When importing parcels into an empty fabric, the data migration process will perform faster than when importing parcels into a fabric that already contains parcels. This is because when parcels are imported into a fabric that already contains parcels, the import is performed in an edit session that is started and then stopped when the process is complete.
Two different adjoining areas or sections of parcels should not be imported at the same time when working in a multiuser environment. This is because an importer session cannot detect the edge points of an adjoining import occurring concurrently in another session.
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.
You can specify a parcel area unit when importing fabric source data in the Import Fabric Data wizard. The area units supported by the parcel fabric editor are as follows:
- Acres, roods, or perches
- Square meters, hectares, or kilometers
- Square meters
- Square roods
- Square feet
- Square U.S. feet
- Quarter sections
- In the Catalog window, right-click your parcel fabric and point to Import > Fabric Data.
- Click the browse button and navigate to your fabric source data on the Select a feature dataset dialog box.
- Click Next.
- Click the Direction and angle units drop-down arrow to choose your direction or angle units.
- Click the Direction type drop-down arrow to choose your direction type.
- 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.
- Select the area units you want to use.
- Click Next.
- Type a radial point tolerance.
- 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.
- Choose a value from the Inversed line accuracy category.
- Click Next to view the summary of your data migration settings.
- 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.
- Click Finish to begin the data migration process.
The Import Fabric Data wizard appears.
The feature class name appears in the Fabric source selected for import text box.
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.
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.