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Aspose.GIS for for Python via .NET 25.9 Release Notes

This page contains release notes information for Aspose.GIS for Python via .NET 25.9.

Full List of Issues Covering all Changes in this Release

Key	Summary	Category
GISPYTHON-42	Ability to intersect huge shape files	Feature
GISPYTHON-45	Ability to union extra complex geometries	Feature
GISPYTHON-46	Optimization of performance and RAM usage of new KmlLayer	Enhancement

Public API changes

Following members have been added:

M:Aspose.Gis.VectorLayer.IntersectionByGeometry(Aspose.Gis.VectorLayer)
M:Aspose.Gis.Geometries.Geometry.Union(Aspose.Gis.Geometries.IGeometry[])
M:Aspose.Gis.Geometries.IGeometry.Union(Aspose.Gis.Geometries.IGeometry[])

Following members have been removed:

None

Usage examples:

GISPYTHON-42. Ability to intersect huge shape files

        # KML, GDB, ShapeFile, GeoJson and other format are supported
        driver = Drivers.kml  # Assuming enum mapping
        first_path = self.GetFileInOutputFolder("path_to_file1.kml")
        second_path = self.GetFileInOutputFolder("path_to_file2.kml")

        # Create first layer with polygons
        with driver.create_layer(first_path) as layer:
            for i in range(10):
                first_point_list = []
                first_point_list.append(Point(i * 10, 0))
                first_point_list.append(Point(i * 10 + 10, 0))
                first_point_list.append(Point(i * 10 + 10, 5))
                first_point_list.append(Point(i * 10, 5))
                first_point_list.append(Point(i * 10, 0))
                first_exterior_ring = LinearRing(first_point_list)
                polygon = Polygon(first_exterior_ring)
                feature = layer.construct_feature()
                feature.geometry = polygon
                layer.add(feature)

        # Create second layer with polygons
        with driver.create_layer(second_path) as layer:
            for i in range(50, 120):
                first_point_list = []
                first_point_list.append(Point(i + 1, 4))
                first_point_list.append(Point(i + 3, 4))
                first_point_list.append(Point(i + 3, 6))
                first_point_list.append(Point(i + 1, 6))
                first_point_list.append(Point(i + 1, 4))
                first_exterior_ring = LinearRing(first_point_list)
                polygon = Polygon(first_exterior_ring)
                feature = layer.construct_feature()
                feature.geometry = polygon
                layer.add(feature)

        # Perform intersection operations
        with driver.open_layer(first_path) as first_layer:
            with driver.open_layer(second_path) as second_layer:
                res_1 = first_layer.intersection_by_geometry(second_layer)
                res_2 = second_layer.intersection_by_geometry(first_layer)

                if res_1.count != 5 or res_2.count != 50:
                    raise Exception("Intersection was incorrect")

GISPYTHON-45. Ability to union extra complex geometries*

        point_list1 = []
        point_list1.append(Point(0, 0))
        point_list1.append(Point(10, 0))
        point_list1.append(Point(10, 5))
        point_list1.append(Point(0, 5))
        point_list1.append(Point(0, 0))
        exterior_ring1 = LinearRing(point_list1)
        geometry = Polygon(exterior_ring1)

        list_of_geometries = []
        for i in range(5):
            point_list2 = []
            point_list2.append(Point(i + 1, 4))
            point_list2.append(Point(i + 3, 4))
            point_list2.append(Point(i + 3, 6))
            point_list2.append(Point(i + 1, 6))
            point_list2.append(Point(i + 1, 4))
            exterior_ring2 = LinearRing(point_list2)
            list_of_geometries.append(Polygon(exterior_ring2))

        geom_after_union = geometry.union(list_of_geometries)

        expected_wkt = "POLYGON ((7 5, 10 5, 10 0, 0 0, 0 5, 1 5, 1 6, 2 6, 3 6, 4 6, 5 6, 6 6, 7 6, 7 5))"
        if (str(geom_after_union) != expected_wkt or geom_after_union.get_area() != 56):
            raise Exception("Incorrect Union")