This command replaces a series of short chord line segments in a
polyline with an arc segment. This applies where you want to have a
true arc instead of a series of line segments. In some cases, the
CAD drafting has the arcs drawn as a series of short chords.
Another application is to create an arc out of a series of
connected survey points along the curve. The routine works by
searching for a series of polyline vertices that fit within the
specified tolerance with a best fit curve.
The options dialog allows you to set the layer for the new
polylines. Otherwise the original polyline layer is used. There is
an option whether to keep or erase the original polylines. The Snap
Tolerance is the maximum offset allowed between the original points
and the arc.
Pulldown Menu Location: Edit > Polyline Utilities >
Edit Polyline
Keyboard Command: addplarc
Prerequisite: polyline