Modify Polylines
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Change the shape and display of polyline objects with polyline editing options. You can also join separate polylines.

For example, modify polylines in several ways using PEDIT, the Properties palette, or grips.

Modify Polylines with Multi-Functional Grips

Polyline grips are multi-functional, providing context-sensitive options for reshaping the polyline. Polyline segments have additional multi-functional grips displayed at their midpoints. Control the display of these grips with the GRIPS system variable.

NoteMulti-functional grips also support the standard Grip modes (Stretch, Move, Rotate, Scale, and Mirror). For information on working with multi-functional grips, see Modify Objects with Multi-Functional Grips.

The multi-functional grip-editing options that are available for polylines depend on

Polyline multi-functional grip editing options

Option Animation
Stretch or Stretch Vertex. Specify a stretch point.

Add Vertex. Specify a point for the new vertex.

Remove Vertex. Delete the selected vertex.

Convert to Arc. Specify the midpoint of a straight segment to convert it to an arc segment.

Convert to Line. Specify the midpoint of an arc segment to convert into a straight segment.

Tangent Direction. Manipulate the tangent directions to redefine the shape of a curve-fit polyline.

Modify Polylines with Coincident Grips

Coincident grips are grips that are shared between multiple objects. When polyline objects sharing the same grip are selected together, multi-functional grip-editing options are not supported for the coincident grip. However, you can still edit the coincident grip using the standard Grip modes (Stretch, Move, Rotate, Scale, and Mirror).

NoteMulti-functional grip-editing options for coincident grips are supported when only one of the polyline objects is selected.

Join Polyline Segments

You can join a line, an arc, or another polyline to an open polyline if their ends connect or are close to each other.

If the ends are not coincident but are within a distance that you can set, called the fuzz distance, the ends are joined by either trimming them, extending them, or connecting them with a new segment.

Spline-fit polylines return to their original shape when joined. Polylines cannot be joined into a Y shape.

If the properties of several objects being joined into a polyline differ, the resulting polyline inherits the properties of the first object that you selected.

See Also
To modify a polyline
To reverse lines, polylines, splines, or helixes
To join polylines, splines, lines, and arcs into a single polyline
To delete a vertex in a polyline
To taper the width of individual polyline segments
Quick Reference
System Variables