Hi, Sorry, I knew that Overlay worked and meant really the Polygon overlay.
I have seen the non-noded intersection exceptions even before. They stop the whole process and I have been thinking that from users perspective it might be good to have an option to skip the errors and get at least some output but I do not know if that is technically possible. I tried to solve a problem that another user had. The final goal is to erase layer 1 by layer 2, so to intersect and remove the parts of geometries on layer 1 which are covered by features on layer 2. I suppose we do not have such direct erase tool but the output from Polygon overlay would work as an interim result. I also tried to union the other layer into one geometry but as I guessed the layer is all too large and complicated for that. Another tool that I tried is the OGR Layer Algebra Erase method https://trac.osgeo.org/gdal/wiki/LayerAlgebra. That stopped also to non-noded intersection error and I believe it comes from GEOS. -Jukka- Lähettäjä: Michaud Michael <m.michael.mich...@orange.fr> Lähetetty: keskiviikko 19. toukokuuta 2021 10.32 Vastaanottaja: OpenJump develop and use <jump-pilot-devel@lists.sourceforge.net> Kopio: Stefan Steiniger <ssteini...@uc.cl> Aihe: Re: [JPP-Devel] How to avoid non-noded intersection error in Overlay? Jukka, I could successfully run overlay, but not polygon overlay. I think there maybe a solution with JTS snaprounding code, but there is no easyway to use it from OpenJUMP (to my knowledge, node-lines is the only plugin to use a snap-rounding approach, but for a reason, I could not use it with a very fine-grain precision on your data). Let me some time to explore as your dataset is quite big. Michaël envoyé : 19 mai 2021 à 00:37 de : Stefan Steiniger via Jump-pilot-devel <jump-pilot-devel@lists.sourceforge.net<mailto:jump-pilot-devel@lists.sourceforge.net>> à : OpenJump develop and use <jump-pilot-devel@lists.sourceforge.net<mailto:jump-pilot-devel@lists.sourceforge.net>> cc : Stefan Steiniger <ssteini...@uc.cl<mailto:ssteini...@uc.cl>> objet : Re: [JPP-Devel] How to avoid non-noded intersection error in Overlay? Hi Jukka, I guess the lines are almost parallel of you zoom in : or parallel for the observer - but indeed are not. They could also be a duplicate. So, the option would be to change precision of evaluation, I believe or delete one or separate them? At least manual intervention seems necessary. Perhaps not so useful but usually this was the case in the past :) Cheers, Stefan On Tue., May 18, 2021, 13:13 Rahkonen Jukka (MML), <jukka.rahko...@maanmittauslaitos.fi<mailto:jukka.rahko...@maanmittauslaitos.fi>> wrote: Hi, I tried to run the Overlay function for this heavy dataset https://we.tl/t-gshlI4TbCU Both layers seem to have no topology errors but the Overlay function fails with an error org.locationtech.jts.geom.TopologyException: found non-noded intersection between LINESTRING ( 95.49610823093388 4.949137070569244, 95.49623518653348 4.948912456969601 ) and LINESTRING ( 95.4962351860291 4.948912457861983, 95.49623518653348 4.948912456969593 ) [ (95.49623518627793, 4.948912457421728, NaN) ] at org.locationtech.jts.noding.FastNodingValidator.checkValid(FastNodingValidator.java:140) at org.locationtech.jts.geomgraph.EdgeNodingValidator.checkValid(EdgeNodingValidator.java:81) at org.locationtech.jts.geomgraph.EdgeNodingValidator.checkValid(EdgeNodingValidator.java:46) at org.locationtech.jts.operation.overlay.OverlayOp.computeOverlay(OverlayOp.java:231) at org.locationtech.jts.operation.overlay.OverlayOp.getResultGeometry(OverlayOp.java:183) at org.locationtech.jts.operation.overlay.OverlayOp.overlayOp(OverlayOp.java:86) at org.locationtech.jts.operation.overlay.snap.SnapIfNeededOverlayOp.getResultGeometry(SnapIfNeededOverlayOp.java:75) at org.locationtech.jts.operation.overlay.snap.SnapIfNeededOverlayOp.overlayOp(SnapIfNeededOverlayOp.java:37) at org.locationtech.jts.geom.GeometryOverlay.overlay(GeometryOverlay.java:76) at org.locationtech.jts.geom.GeometryOverlay.union(GeometryOverlay.java:157) at org.locationtech.jts.geom.Geometry.union(Geometry.java:1367) at org.openjump.core.geomutils.algorithm.IntersectGeometries.nodeLines(IntersectGeometries.java:478) at org.openjump.core.ui.plugin.tools.IntersectPolygonLayersPlugIn.runIntersectionNew(IntersectPolygonLayersPlugIn.java:205) at org.openjump.core.ui.plugin.tools.IntersectPolygonLayersPlugIn.run(IntersectPolygonLayersPlugIn.java:127) at com.vividsolutions.jump.workbench.ui.task.TaskMonitorManager$TaskWrapper.run(TaskMonitorManager.java:151) What does this error mean, in which part of the operation it happens, and is there any way to get over it? I also tried a GDAL/GEOS based utility but it fails with similar error “TopologyException: found non-noded intersection between LINESTRING (104.098 0.627591, 104.098 0.627447) and LINESTRING (104.098 0.627484, 104.098 0.627447) at 104.09781931770398 0.62748351910904443". -Jukka Rahkonen- _______________________________________________ Jump-pilot-devel mailing list Jump-pilot-devel@lists.sourceforge.net<mailto:Jump-pilot-devel@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel _______________________________________________ Jump-pilot-devel mailing list Jump-pilot-devel@lists.sourceforge.net<mailto:Jump-pilot-devel@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
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