topic Re: Featureline levels not picking up triangle sides in Civil 3D Forum

Featureline levels not picking up triangle sides

neilyj666 — Thu, 12 Sep 2024 20:32:45 GMT

I trying to get a feature line to pick up the levels from triangulation using intermediate gradient break points but it doesn't grab them all (see below yellow circled areas) and I have no idea why - anyone got any ideas?

thanks

Re: Featureline levels not picking up triangle sides

AllenJessup — Thu, 12 Sep 2024 20:48:29 GMT

~~Try creating a Proximity Breakline~~.

I think I'm wrong about that. I thought it would pick up where it crossed the triangles. But it looks like it would pull the elevation from the closest vertex.

Re: Featureline levels not picking up triangle sides

brian.strandberg — Thu, 12 Sep 2024 21:12:00 GMT

That is very unusual. I know the UKIE country kit just came out, maybe some weird interaction there?

Any chance you can share the drawing? I'm going to do some checking on my side as that is very odd. I'm also wondering if those triangles are all the same slope so something is saying we don't need an intermediate grade breakpoint there. That's not how it should work obviously.

Re: Featureline levels not picking up triangle sides

brian.strandberg — Thu, 12 Sep 2024 21:38:32 GMT

Stupid question - those triangles are from the same surface right? No, very stupid question.

Re: Featureline levels not picking up triangle sides

neilyj666 — Fri, 13 Sep 2024 07:08:55 GMT

@brian.strandberg I can't use the UKIE Kit as Prospector doesn't work properly (see separate thread; I have a Support Case opened on this one) but I attach the drawing (shifted from its real world location as I can't share it) with the surface an a polyline that needs to be converted to Feature and pick up all the triangle intersections.

As my ultimate goal is to remove all the triangles east of the polyline, my workaround is going to be to create a boundary to use an outer but this doesn't get to the root problem of the featureline not picking up all the intersections.

Re: Featureline levels not picking up triangle sides

neilyj666 — Fri, 13 Sep 2024 07:11:53 GMT

Yes - proximity BL's will only get the nearest point level.

I think I can workaround by creating an outer boundary but this doesn't address the issue of the FL not picking up all intersections - I have attached the drawing in another reply to @brian.strandberg so I'd be grateful if you could try the same thing before i raise a support case

Re: Featureline levels not picking up triangle sides

Joe-Bouza — Fri, 13 Sep 2024 13:53:57 GMT

I extracted the border and create a closed bpoly used as an outer boundary and checked non destructive break and the edge elevations along the poly line seem to match. is that what you are looking for?

oops! the root of the problem, gottcha

Re: Featureline levels not picking up triangle sides

Joe-Bouza — Fri, 13 Sep 2024 14:21:08 GMT

Have you tried MAPCLEAN the poly line?

I exploded the pline MAPCLEANED to pline>> FL >>> elevation from and appears to pickup triangle locations

Re: Featureline levels not picking up triangle sides

Joe-Bouza — Fri, 13 Sep 2024 14:21:38 GMT

Re: Featureline levels not picking up triangle sides

neilyj666 — Fri, 13 Sep 2024 14:29:49 GMT

@Joe-Bouza that appears to have sorted it - the polyline was originally derived from the min dist between surfaces and I ran overkill as this usually works but didn't think of MAPCLEAN

Just wish things would work without resorting to PURGE, AUDIT, OVERKILL, MAPCLEAN, WBLOCK, RECOVER etc etc; I dread to think how much time I've used troubleshooting dodgy dwg files

Re: Featureline levels not picking up triangle sides

brian.strandberg — Fri, 13 Sep 2024 15:05:37 GMT

Sorry I didn't see your message until the next day, I really needed to get away from my computer yesterday. I'm glad you were able to get it sorted out.

Re: Featureline levels not picking up triangle sides

Joe-Bouza — Fri, 13 Sep 2024 19:51:21 GMT

Glad it worked for you.

I hear what your saying. I come to live with always cleaning geometry to use for civil3d, but in this case the geo was derived from civil3d, can be frustrating