示例#1
0
        private void SetDataFromPolygon(Geometry geometry)
        {
            GeoPolygon polygon = new GeoPolygon();

            polygon.SetData(geometry);

            _polygonArray.Add(polygon);
        }
示例#2
0
        static void TestCountryPolygonAPI()
        {
            // test polygon API

            string countryCode        = "NGA";
            double simplifyTolerlance = 0.0;

            GeoMultiPolygon fullNigeriaData = GeoAPI.ReadGeoPolygonByCountryKey(countryCode, simplifyTolerlance);

            if (fullNigeriaData == null)
            {
                Console.WriteLine("failed to get country data for specified country code: {0}", countryCode);
                return;
            }

            fullNigeriaData.saveToGeoJson("E:/Full_Nigeria.geojson");

            simplifyTolerlance = 0.02;

            GeoMultiPolygon simplifiedNigeriaDataPreserveTopology = GeoAPI.ReadGeoPolygonByCountryKey(countryCode, simplifyTolerlance);

            if (simplifiedNigeriaDataPreserveTopology == null)
            {
                Console.WriteLine("failed to get country data for specified country code: {0}", countryCode);
                return;
            }

            // access lat long data

            for (int i = 0; i < simplifiedNigeriaDataPreserveTopology.GetData().Count; i++)
            {
                GeoPolygon polygon = simplifiedNigeriaDataPreserveTopology.GetData()[i];

                for (int j = 0; j < polygon.GetData().Count; j++)
                {
                    GeoLineString lineString = polygon.GetData()[j];

                    for (int k = 0; k < lineString.GetData().Count; k++)
                    {
                        LonLat lonlat = lineString.GetData()[k];
                        Console.WriteLine("{0}d th x = {1}, y = {2}", i, lonlat.longitude, lonlat.latitude);
                    }
                }
            }

            // how to test result
            // we can save result to geojson file, open it in GIS tool(for example QGIS) and view it.

            bool saveSuccess = simplifiedNigeriaDataPreserveTopology.saveToGeoJson("E:/Simplified_Nigeria_0.02.geojson");

            if (!saveSuccess)
            {
                Console.WriteLine("failed to save");
            }
        }
示例#3
0
        private void SetDataFromMultiPolygon(Geometry geometry)
        {
            int geomCount = geometry.GetGeometryCount();

            for (int i = 0; i < geomCount; i++)
            {
                Geometry geom = geometry.GetGeometryRef(i);

                if (geom.GetGeometryType() == wkbGeometryType.wkbPolygon)
                {
                    GeoPolygon polygon = new GeoPolygon();

                    polygon.SetData(geom);

                    _polygonArray.Add(polygon);
                }
                else
                {
                    Console.WriteLine("unknown geometry type!");
                }
            }
        }