Joining Polylines

Commands: PEDIT and JOIN

Using the Join option of the Edit Polyline tool you can add an arc, a line or a polyline entity to an existing open polyline, forming one continuous polyline entity.

To join an entity to a polyline, that entity must already share an endpoint with an end vertex of the selected polyline.

When you join an entity to a polyline, the width of the new polyline segment depends on the width of the original polyline and the type of entity you are joining to it:

• A line or an arc inherits the width from the polyline segment to which it is joined.

• A polyline joined to a tapered polyline retains its own width values.

• A polyline joined to a uniform-width polyline inherits the width from the polyline to which it is joined.

The Join command joins lines, LW polylines, 2D polylines, 3D polylines, circular arcs, elliptical arcs, splines and helixes at their common endpoints.

The type of the resulting entity depends on the types of the input entities and on their coplanarity.

To join an arc, line, or polyline to an existing polyline

1. Do one of the following:

   • Click the Edit Polyline tool button () on the Modify toolbar.
   • Choose Edit Polyline in the Modify menu.
   • Type editpline or pedit in the command window, then press Enter.

   You are prompted: Select polyline to edit.

2. Select the parent polyline.
   You are prompted: Edit polyline: Edit vertices/Close (or Open)/Decurve/Fit/Join/Linetype-Mode/Reverse/Spline/Taper/Width/Undo/<eXit>:
   A prompt menu displays.

3. Choose Join in the prompt menu or type J and press Enter.
   You are prompted: Select entities to join:

4. Select the entities to join.
   The number of already selected entities displays in the command bar.

5. Right click or press Enter to stop selecting entities and add the selection to the polyline.

6. Do one of the following:

   • Continue editing the selected polyline.
   • Choose Exit in the prompt menu or press Enter to conclude the Edit Polyline tool.