Perhaps you need the same point added at the start and end of your polygon, but the exception you get seems to be about something else. Please can you send more details about that.
Thanks for using GeoTools. Andy http://www.geog.leeds.ac.uk/people/a.turner/index.html ----- Reply message ----- From: "Claus Näveke" <geoto...@naeveke.de> To: "geotools-gt2-users@lists.sourceforge.net" <geotools-gt2-users@lists.sourceforge.net> Subject: [Geotools-gt2-users] Self-Intersecting Polygons Date: Sat, Feb 7, 2015 18:43 Hi there, I'm currently trying to get GeoTools working for me, but unfortunately I am experiencing some trouble right at the beginning: When importing data from an external source (so fixing the the input is not an option) and trying to create a polygon out of it, I end up getting "IllegalArgumentException: The curve segments are not simple, but intersect" - The message is quite clear (and true), but how can I work around it? The code I'm currently using looks like this: double[] in = new double[]{ 9.000, 48.000, 0, 10.000, 48.000, 0, 9.000, 49.000, 0, 10.000, 49.000, 0 }; GeometryBuilder builder = new GeometryBuilder(DefaultGeographicCRS.WGS84 ); PointArray points = builder.createPointArray(); for(int i = 0; i < pointCount; i+=3){ Point point = builder.createPoint(in[i], in[i+1]); points.add(point); } SurfaceBoundary surface = builder.createSurfaceBoundary(points); Polygon polygon = builder.createPolygon(surface); Is there a way to work with this input so I can use it as one (or more) polygon? (I want to check whether a certain point is located inside later on) Thanks in advance Claus ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ GeoTools-GT2-Users mailing list GeoTools-GT2-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ GeoTools-GT2-Users mailing list GeoTools-GT2-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
