I have many segmented polylines that I need to turn into arcs. See the attached image for the method I use to create an arc from a single polyline. I need to do this to thousands of polylines. Does anyone know of a lisp that could do this? Or maybe some other method that can do many polylines at once?
Solved! Go to Solution.
Unfortunately, the aecccreatearcbybestfit command is not exposed to VisualLISP, so no luck there.
If you don't need the Best Fit functionality of that command, you can use Pedit, Multiple, Fit curve. That would do them all in one fell swoop. It won't be a single arc through the entire pline, but it will have tangent curve segments. Depending on your need for speed vs. your need to obtain a single best-fit curve, this might work as a solution. It would be fast, that's for sure.
Delta Engineering Systems
Autodesk Authorized Value-Added Reseller
I figured out a way to do it. First I use Pedit to fit a curve like tcorey suggested. Then I use mapclean and select Simplify Objects, set the tolerance to 1 and check the Create Arcs check box. This creates 2d polylines which can then be exploded to get arcs.
Win 7 Pro, 32 bit; Intel Core i5 @ 2.80GHz; 4GB RAM—Civil 3D 2008 & 2011
Credit where credit is due! Give kudos or accept as solution whenever you can.