+5
I am sending the FuzzyParrelLineFinder 3 features that are lines with 2 coordinates only (i.e. start and end points). The coordinates are identical. The lines are 64 m in length and I am using the parameters of: Sampling Distance = 1 and Search Distance = .30. The FuzzyParrelLineFinder is not identifying the lines as matching. Are there situations where the FuzzyParrelLineFinder doesn't work or have I miss-understood the parameters?
Best answer by markatsafe
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+2
@philipwhitten If you think there is an issue with the FuzzyParallelLineFinder then perhaps post a comment on the FME HUB for the author to take a look.
More recent versions of Matcher and ChangeDetector can use the Frechet distance when you set the Vector Tolerance under the Check Geometry panel, so you might want to try those.
+17
Hi @philipwhitten,
The algorithm the FuzzyParallelLineFinder uses to match segments breaks down for perfectly coincident lines. I will need to update the transformer to catch that case and handle it properly.
+17
Hi @philipwhitten,
The algorithm the FuzzyParallelLineFinder uses to match segments breaks down for perfectly coincident lines. I will need to update the transformer to catch that case and handle it properly.
FuzzyParallelLineFinder updated to properly handle coincident segments.
+5
Thank you. This question and answer forum is so helfpul. I learned about Frechet Distance and I realised that it was easier from other questions to compare the centre point, length and angle of my pipes to identify duplicates.
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