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Question

Split polygon by line

  • January 30, 2013
  • 4 replies
  • 86 views

jdh
Contributor
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I feel like I'm missing something obvious.  What is the best way to split (cut) a set of polygons with  some lines?

 

 

If I use the Intersector followed by the AreaBuilder I end up with a lot of additional areas created by the lines, and I have a few hoops to jump through to get the attributes back.
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4 replies

philippeb
Enthusiast
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  • Enthusiast
  • January 30, 2013
LineOnAreaOverlayer?

jdh
Contributor
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  • Author
  • Contributor
  • January 30, 2013
That splits the lines at the boundaries of the area, I want the reverse.

fmelizard
Safer
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  • Safer
  • January 30, 2013
Hi,

 

 

What about clipping the lines and dissolving the inside lines with the polygons? any luck with that?

Forum|alt.badge.img+1
  • January 31, 2013
Unless I misunderstand the problem, you should get what you need by first clipping the lines by the areas, then running the clipped lines and the areas into an AreaBuilder.  The clipping will prevent the dangling ends of your lines from forming extra areas.  You can recover your attributes by running an AreaOnAreaOverlayer.