Hi,
I have a set of lines that make up a set of polygons. Is there a way to separate lines that goes around the edge of data set? (see picture below, only yellow lines)
Thank you.
Solved
separating lines (shp)
Best answer by david_r
Thanks for the feedback, didn't realize you needed to preserve the input lines. Try this:
One way could be to try the AreaBuilder followed by the Dissolver and then the GeometryCoercer set to fme_line.
david_r wrote:
One way could be to try the AreaBuilder followed by the Dissolver and then the GeometryCoercer set to fme_line.
The result will depend on how accurately the lines are connecting, the should be 100% topologically correct for this to work. You may want to try a Snapper (segment snapping) with a small tolerance as well as an Intersector before the AreaBuilder, if necessary.
If that doesn't work, consider posting a small ffs-file here with some sample data so that we can give a more tailored response.
+21- Influencer
Does this come from a CAD source? If you want the yellow lines you could perform a filter using the color attribute.
david_r wrote:
The result will depend on how accurately the lines are connecting, the should be 100% topologically correct for this to work. You may want to try a Snapper (segment snapping) with a small tolerance as well as an Intersector before the AreaBuilder, if necessary.
If that doesn't work, consider posting a small ffs-file here with some sample data so that we can give a more tailored response.
oscard wrote:
Does this come from a CAD source? If you want the yellow lines you could perform a filter using the color attribute.
david_r wrote:
In table view i need to get 100+ rows that represent lines. With this I only have one.
- Best Answer
Thanks for the feedback, didn't realize you needed to preserve the input lines. Try this:
david_r wrote:
Thanks for the feedback, didn't realize you needed to preserve the input lines. Try this:
david_r wrote:
Thanks for the feedback, didn't realize you needed to preserve the input lines. Try this:
- GeometyCorecer -> Filter
- Original Line Features -> Candidate
- Spatial Predicates to Test: "Filter Contains Candidate"
Another approach.
+19- Safer
Hi @luckym You could also use just a TopologyBuilder after the AreaBuilder. The Universe feature will be a polygon of the outer edges.
fmelizard wrote:
Hi @luckym You could also use just a TopologyBuilder after the AreaBuilder. The Universe feature will be a polygon of the outer edges.
takashi wrote:
The SpatialFilter can also be used instead of the LineOnLineOverlayer + Tester.
- GeometyCorecer -> Filter
- Original Line Features -> Candidate
- Spatial Predicates to Test: "Filter Contains Candidate"
Another approach.
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