for some reason i can’t extract a subcrv from this. i have it happen a few times today with other curves so i must be doing something wrong. extractsubcrv problem.3dm (30.4 KB)

Hello - use SimplifyCrv first - the curve is a NURBS curve, simplifying will make it back into a polyline. -Pascal

thanks. i figured i was doing something stupid. :wink:

Well, it’s hard to know - it looks like it’s got segments, but however it got there, as a NURBs curve it is neither a polycurve (has segments that the command can identify) nor a polyline. But visually there is no clue - @dale - is there some way we can help in these cases? -Pascal

https://mcneel.myjetbrains.com/youtrack/issue/RH-59279

Problem with ExtractSubCrv

Rhino Rhino for Windows

brian (Brian Gillespie) June 30, 2020, 10:30pm 8

RH-59279 is fixed in the latest WIP

Topic		Replies	Views
Sometimes I cannot pick the polycurve by ExtractSubcurve Command Rhino for Windows	4	882	March 10, 2014
_ExtractSubCrv doesn't work sometimes Rhino for Windows	8	934	August 29, 2019
ExtractSubCrv "Selected object is not a polycurve" Rhino for Windows windows , polycurves , rhino7	7	693	June 15, 2022
ExtractSubCrv transforms arcs to NURBS Curves Rhino for Mac	1	507	March 4, 2018
RH8 - extract sub-curve issue Rhino for Windows windows	1	184	January 3, 2024

Problem with ExtractSubCrv

Related topics