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GDAL create kml

2024-07-14 17:20:12   220人阅读

新增kml 点
 public void WriteKmlPiont()      {          string driverName = "KML"; //MapInfo File          OSGeo.GDAL.Gdal.SetConfigOption("GDAL_FILENAME_IS_UTF8", "NO");          // 为了使属性表字段支持中文，请添加下面这句SHAPE_ENCODING          //UTF-8 to ISO-8859-1.          OSGeo.GDAL.Gdal.SetConfigOption("SHAPE_ENCODING", "");          //注册          Ogr.RegisterAll();          OSGeo.OGR.Driver ogrDriver = Ogr.GetDriverByName(driverName);          DataSource ogrDS = ogrDriver.CreateDataSource("C:\\test.kml", null);         // string fileName = DateTime.Now.ToString("yyyyMMddHHmmss");          Layer ogrlayer = ogrDS.CreateLayer("kml", null, wkbGeometryType.wkbPoint, null);          FieldDefn fdefn = new FieldDefn("Name", FieldType.OFTString);          fdefn.SetWidth(32);          ogrlayer.CreateField(fdefn,1);          fdefn = new FieldDefn("IntField", FieldType.OFTInteger);          ogrlayer.CreateField(fdefn, 1);          fdefn = new FieldDefn("DbleField", FieldType.OFTReal);          ogrlayer.CreateField(fdefn, 1);          fdefn = new FieldDefn("DateField", FieldType.OFTDate);          ogrlayer.CreateField(fdefn, 1);          Feature feature = new Feature(ogrlayer.GetLayerDefn());          feature.SetField("Name", "新增kml");          feature.SetField("IntField", (int)123);          feature.SetField("DbleField", (double)12.345);          feature.SetField("DateField", 2007, 3, 15, 18, 24, 30, 0);          Geometry geom = Geometry.CreateFromWkt("POINT(115.91466833333 28.668223333)");          feature.SetGeometry(geom);          ogrlayer.CreateFeature(feature);          ogrlayer.Dispose();          ogrDS.Dispose();      }
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新增kml 线
   public void WriteKmlLine()      {          string driverName = "KML"; //MapInfo File          OSGeo.GDAL.Gdal.SetConfigOption("GDAL_FILENAME_IS_UTF8", "NO");          // 为了使属性表字段支持中文，请添加下面这句SHAPE_ENCODING          //UTF-8 to ISO-8859-1.          OSGeo.GDAL.Gdal.SetConfigOption("SHAPE_ENCODING", "");          //注册          Ogr.RegisterAll();          OSGeo.OGR.Driver ogrDriver = Ogr.GetDriverByName(driverName);          DataSource ogrDS = ogrDriver.CreateDataSource("C:\\wkbLineString.kml", null);          // string fileName = DateTime.Now.ToString("yyyyMMddHHmmss");          Layer ogrlayer = ogrDS.CreateLayer("kml", null, wkbGeometryType.wkbLineString, null);          FieldDefn fdefn = new FieldDefn("Name", FieldType.OFTString);          fdefn.SetWidth(32);          ogrlayer.CreateField(fdefn, 1);          fdefn = new FieldDefn("IntField", FieldType.OFTInteger);          ogrlayer.CreateField(fdefn, 1);          fdefn = new FieldDefn("DbleField", FieldType.OFTReal);          ogrlayer.CreateField(fdefn, 1);          fdefn = new FieldDefn("DateField", FieldType.OFTDate);          ogrlayer.CreateField(fdefn, 1);          Feature feature = new Feature(ogrlayer.GetLayerDefn());          feature.SetField("Name", "新增kml");          feature.SetField("IntField", (int)123);          feature.SetField("DbleField", (double)12.345);          feature.SetField("DateField", 2007, 3, 15, 18, 24, 30, 0);          Geometry geom = new Geometry(wkbGeometryType.wkbLineString); //Geometry.CreateFromWkt("LINESTRING(115.91466833333 28.668223333)");          //需要增加两个点，两点成一线，开始测试的时候就经常报错。、          geom.AddPoint_2D(115.91466833333, 28.668223333);          geom.AddPoint_2D(115.92466833333, 28.668223333);          feature.SetGeometry(geom);          ogrlayer.CreateFeature(feature);          ogrlayer.Dispose();          ogrDS.Dispose();      }
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