private int DoRadius(ISpatialIndex <ILineString> index) { { var c = new Coordinate2D(11.343629, 48.083797); var r = 50; index.Radius(c, r); } { var c = new Coordinate2D(11.344827, 48.083752); var r = 10; index.Radius(c, r); } { var c = new Coordinate2D(11.344827, 48.083752); var r = 5; index.Radius(c, r); } return(0); }