topic Re: Extract XYZ Circle Created from Multiple Polyline in AutoCAD Forum

Extract XYZ Circle Created from Multiple Polyline

aidilfitriansyahhV7KXB — Mon, 08 Mar 2021 13:35:50 GMT

Hi All,

How to Extract XYZ Circle Created from a lot of Polyline?

Re: Extract XYZ Circle Created from Multiple Polyline

Patchy — Mon, 08 Mar 2021 14:09:49 GMT

Put point nodes on them and use dataextraction?

Attach your .dwg for a test.

Re: Extract XYZ Circle Created from Multiple Polyline

ВeekeeCZ — Mon, 08 Mar 2021 14:16:15 GMT

Draw a real circle using 3 points option over it.

Re: Extract XYZ Circle Created from Multiple Polyline

Kent1Cooper — Mon, 08 Mar 2021 14:32:19 GMT

If those are equally spaced vertices, and it's all line segments, you can use the PolygonToCircle.lsp with its Pg2C command, >here<. That requires pretty accurate regularity, so if there are variations in segment length or something that cause Pg2C to not work, there are other threads around with conversions, such as >this<. [One of the suggestions on that thread automates the 3-point Circle idea suggested by @ВeekeeCZ in Message 3 here.]

If they're arc segments, try CirclePolylineSwap.lsp with its P2C command, >here<. [It predates the PolygonToCircle routine, which is why I put the 'g' for Polygon into the latter's command name.]