Arc as anchor in AnchoredSnapper

The documentation explains segment snapping: snapping vertices of candidate points to their anchor, if their distances are within the specified snapping distance

“Snapping Distance” should to be set to be half the distance of the shortest line. Prior to AnchorSnapper, place a LengthCalculator and sort output length attribute to find the smallest length

The documentation explains segment snapping: snapping vertices of candidate points to their anchor, if their distances are within the specified snapping distance

“Snapping Distance” should to be set to be half the distance of the shortest line. Prior to AnchorSnapper, place a LengthCalculator and sort output length attribute to find the smallest length

Thank you 

I have no problem with that snapping vertices of candidate not points to their anchor, if their distances are not within the specified snapping distance

my problem is , why when using "Segment Snapping" with some arcs lead to change this arc , and raise an error when trying to insert that arc in databae

error ORA-13347: the coordinates defining an arc are not distinct

The anchor should not move in any way

yeah you may need to sample a single problem feature. Inspect it in the feature information window and in the visual preview map window. You may need a transformer like https://docs.safe.com/fme/html/FME-Form-Documentation/FME-Transformers/Transformers/arcstroker.htm to converts any arcs to a series of interpolated line segments.

thank you

but arcs is so important for me and ArcStroker change the curve of arcs

arcs are fine until they are used as an anchor from the AnchoredSnapper

unfortunately in FME terms arcs are not a Line geometry, which the segment snapping would use the line vertex…. so arc by bulge or 3dpoint can’t work with an anchor. The ArcStoker can be used to get the snapping working and you can also coercer or merge back the original arc feature

https://docs.safe.com/fme/html/FME-Form-Documentation/FME-ReadersWriters/!FME_Geometry/FME_Geometry_Model.htm

Thanks for your reply

but I don't know if it's because of the same explanation or not. Sometimes the SpatialRelator works well and sometimes it doesn't.

when :  

Supplier is fme_type : fme_arc 

and Requestor is fme_type : fme_point

functions : 

Requestor OGC-Intersects Supplier
Requestor OGC-Touches Supplier
Requestor OGC-Contains Supplier
Requestor is OGC-Within Supplier

Tester : incorrectly classifies some points outside the intersection range even though there is an intersection, and sometimes it classifies the correct intersection correctly.
On what standard can the ARC be used, or should it be avoided at all?

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If ArcEstimator  is used after ArcStroker , ARCs will it be returned to its original position completely as if I had not used ArcStroker, and thus the ARC will be insert into the database without any distortion in the curve? Is there a document for this? Thank you.

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and another question please

How can I keep the midpoint of the ARC ? After Reader reading the curves, the midpoint on which the ARC was built disappears (ArcBy3Points) - source Civil CAD File -

so the curve was reconstructed using the ArcEstimator , is it built on any basis?