Question

我必须合并一组创建新多边形的多边形有时会发生我在多边形中有小洞的情况，所以当我尝试合并它们时，我收到一个错误我该如何检测并解决？

使用一些错误示例进行更新

side location conflict [ (12.235768128349596, 44.387249570104892, NaN) ]
   at NetTopologySuite.Operation.Overlay.Snap.SnapIfNeededOverlayOp.GetResultGeometry(SpatialFunction opCode)
   at NetTopologySuite.Geometries.Geometry.Union(IGeometry other)
   at NetTopologySuite.Operation.Union.CascadedPolygonUnion.UnionOptimized(IGeometry g0, IGeometry g1)
   at NetTopologySuite.Operation.Union.CascadedPolygonUnion.Union()
   at NetTopologySuite.Operation.Union.UnaryUnionOp.Union()

或

found non-noded intersection between LINESTRING(12.448591764796777 41.972860890341124, 12.448731325430401 41.972841479998927) and LINESTRING(12.449 41.973, 12.448695198462875 41.972831837041554) [ (12.448716431340822, 41.972843551495508, NaN) ]
   at NetTopologySuite.Noding.FastNodingValidator.CheckValid()
   at NetTopologySuite.Operation.Overlay.OverlayOp.ComputeOverlay(SpatialFunction opCode)
   at NetTopologySuite.Operation.Overlay.OverlayOp.Overlay(IGeometry geom0, IGeometry geom1, SpatialFunction opCode)

或

Invalid number of points in LineString (found 1 - must be 0 or >= 2)
   at NetTopologySuite.Geometries.LineString..ctor(ICoordinateSequence points, IGeometryFactory factory)
   at NetTopologySuite.Geometries.GeometryFactory.CreatePolygon(ICoordinateSequence coordinates)

Answer 1

您遇到的大多数错误是由于无效的几何形状引起的。您可以使用geometry.IsValid或NetTopologySuite.Operation.Valid.IsValidOp类来检查几何形状是否有效。要纠正这些错误，通常可以使用偏移量为0的缓冲区：geometry = geometry.Buffer(0)。

如何将多边形与nettopologysuite合并？

1 个答案: