topic Re: Section Along a Polyline in Documentation

Section Along a Polyline

MitchDes — Tue, 30 May 2023 08:01:05 GMT

Hi, can anyone tell me if it is possible to create a section along a polyline? I need to draw a section that follows a path (not a straight line). Is such a thing possible?

Re: Section Along a Polyline

alemanda — Sat, 25 Feb 2017 07:16:46 GMT

Well ... It's not clear 100% what you want to obtain.
I can tell you that with the section tool you can have a broken section line (stepped section line), always along the same direction.
Otherwise you can make a 3D using the marquee (a polygon as you like) and create a parallel projection (elevation) from the point of view that you prefer.

Re: Section Along a Polyline

MitchDes — Sat, 25 Feb 2017 07:37:29 GMT

Thanks for the response. I realise that my question was a little vague, but it is difficult to explain. The section I want to generate is through a terrain mesh, and the section that I want to follow is 'U' shaped. It is a section through a driveway that doubles back on itself as it climbs the slope - like a switch - back road climbing a mountain. So I want the section to indicate the slope and slope changes along the course of the driveway. So I was hoping to be able to create the section along a polyline that is drawn on the driveway centreline (not straight or stepped), but angled, faceted or even curved. Hope this is clearer now, any help appreciated.

Re: Section Along a Polyline

alemanda — Sat, 25 Feb 2017 08:19:57 GMT

Ok ... Now it's clearer
Actually you cannot achieve that at once
You should draw all the section lines along your path, save them as views and put together in a layout.
Of course your sections should have no projection depth.

Re: Section Along a Polyline

MitchDes — Sat, 25 Feb 2017 08:28:16 GMT

Thanks for your help Alemanda. Sounds tedious, but I'll give it go!

Re: Section Along a Polyline

vistasp — Sat, 25 Feb 2017 08:56:59 GMT

There's a youtube video for doing something similar. It's not in English but you should be able to follow it.

https://youtu.be/hd40jeR5bVo

Re: Section Along a Polyline

MitchDes — Sat, 25 Feb 2017 09:33:38 GMT

Thanks, Looks like a great solution but I can't get the majic wand to respond to to the curved line (or any line). Maybe it's because I'm using Archicad start (not the full version)?

Re: Section Along a Polyline

David Maudlin — Sat, 25 Feb 2017 13:21:10 GMT

MitchDes wrote:
Thanks, Looks like a great solution but I can't get the majic wand to respond to to the curved line (or any line). Maybe it's because I'm using Archicad start (not the full version)?

He is using the Interior Elevation tool, not the Section or Elevation tool. They are similar, but not identical.

David

Re: Section Along a Polyline

MitchDes — Sat, 25 Feb 2017 13:33:16 GMT

Well spotted David, That works!
Thanks to all for your help, much appreciated.