Skip to main content
Solved

create outer lines from polygon

  • January 24, 2020
  • 2 replies
  • 477 views
Y

Hi all,

 

 

I try to redefine the outer boundaries of the red and green polygons. As you can see in the picture, they are not up-to-date anymore. However, I have tried different transformers, in different order like GeometryCoercer, LineOnLine Overlayer and a clipper, but the outcome is everytime a mess of lines criss-crossing (second picture), Basically I want to get rid of everything on the 'inside' and just keep the outer boundary of both red and green (or in-and outside of green ofcourse, but then I have another problem with different symbology on both sides...). I don't need any of the attributes, just the geometry will do. I am relatively new to FME, any help much appreciated!

 

 

Thanks.

 

 

Best answer by erik_jan

The Dissolver transformer will create the outer polygon (do not create holes/donuts).

Then the GeometryCoercer can convert the polygon to the outer boundary line.

Hope this helps.

This post is closed to further activity.
It may be an old question, an answered question, an implemented idea, or a notification-only post.
Please check post dates before relying on any information in a question or answer.
For follow-up or related questions, please post a new question or idea.
If there is a genuine update to be made, please contact us and request that the post is reopened.

2 replies

erik_jan
Contributor
Forum|alt.badge.img+22
  • erik_janContributor
  • Contributor
  • 2179 replies
  • Best Answer
  • January 24, 2020

The Dissolver transformer will create the outer polygon (do not create holes/donuts).

Then the GeometryCoercer can convert the polygon to the outer boundary line.

Hope this helps.

Y
  • ymor_v
  • Author
  • 5 replies
  • January 27, 2020

Yes it works! Thank you very much!

Community Stats

32,078
Posts
121,802
Replies
39,709
Members

Latest FME

Terms & ConditionsCookie settingsAccessibility statement
A product of
Safe Software respectfully acknowledges that we live, learn and work on the traditional and unceded territories of the Kwantlen, Katzie, and Semiahmoo First Nations.