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from qgis.core import QgsApplication # Initialize QGIS application (replace 'path/to/qgis' with your actual QGIS path) qgis_app = QgsApplication([], False) qgis_app.setPrefixPath('C:\\Program Files\\QGIS 3.34.6', True) qgis_app.initQgis() from qgis.core import QgsVectorLayer, QgsCoordinateTransformContext, QgsVectorFileWriter, QgsWkbTypes # Replace these paths with your input and output file paths input_layer_path = "C:/Users/matthewh/Documents/Sweep/input_layer.shp" output_shapefile_path = "C:/Users/matthewh/Documents/Sweep/output_shapefile.shp" # Load the input vector layer input_layer = QgsVectorLayer(input_layer_path, "input_layer", "ogr") # Set up options for writing the vector file options = QgsVectorFileWriter.SaveVectorOptions() options.driverName = "ESRI Shapefile" options.fileEncoding = "UTF-8" options.overrideGeometryType = QgsWkbTypes.Polygon # Assuming you want to export polygons options.skipAttributeCreation = False # Set to True if you only want to write geometries without attributes options.onlySelected = False # Set to True if you want to export only selected features # Create a QgsCoordinateTransformContext object for handling coordinate transformations if needed transform_context = QgsCoordinateTransformContext() # Call the writeAsVectorFormatV3() method to write the layer to the vector file error_code, error_message, new_file_path, new_layer_name = QgsVectorFileWriter.writeAsVectorFormatV3( input_layer, output_shapefile_path, transform_context, options ) # Check the error code returned by the method to determine if the write operation was successful if error_code == QgsVectorFileWriter.NoError: print("Vector layer saved successfully!") else: print(f"Error {error_code}: {error_message}")
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