Summary
Instructions provide the steps necessary to create a relate and perform an attribute query on a related item using Edit Tools.
Procedure
The following example documents the creation of a relate between an arc coverage called ROADS and a stand alone INFO table called ROADS.LUT. The relate is based on the numeric item ROADS-ID that exists in both tables. The attribute query is performed on an item called VALUE that exists in the related table ROADS.LUT.
- Start ArcInfo Workstation and start Edit Tools.
Code:
Usage: arctools {MAP | EDIT | GRID | COMMAND | LAND_RECORDS}
Arc: arctools edit
- Click File > Open and choose to display the ARC feature class from the ROADS coverage.
- Choose ArcTools > Manage > Relates.
- Click the 'Add INFO' button.
- Enter the following parameters:
Code:
Relate Name: ROADREL
From Item: ROADS-ID
To Table: ROADS.LUT
To Item: ROADS-ID
Relate Type: LINEAR
Access: READ-ONLY
Note:
Some options require right-clicking the available text box and browsing for the proper selection.
- Click OK in the Add INFO Relate and Relate Environment dialog boxes
- Click Table Manager on the Edit Arcs & Nodes menu.
- Click Relate.
- Highlight the VALUE item and click Apply. This will add the ROADREL//VALUE item to the list of available items to the query.
- Click Dismiss on the Relate Browser dialog box. Click OK on the dialog box listing the available items.
- Click Edit > Attribute Selection.
- In the Logical Selection menu, build a selection expression using the related item, such as 'ROADREL//VALUE = 3', and click Apply Expression to execute the query. The features with related values matching this query are selected.