add combine API

scenarionet/scripts/cmobine_dataset.py

@@ -0,0 +1,23 @@
+"""
+This script aims to convert nuscenes scenarios to ScenarioDescription, so that we can load any nuscenes scenarios into
+MetaDrive.
+"""
+import argparse
+import os.path
+
+from scenarionet import SCENARIONET_DATASET_PATH
+from scenarionet.converter.nuscenes.utils import convert_nuscenes_scenario, get_nuscenes_scenarios
+from scenarionet.converter.utils import write_to_directory
+from scenarionet.builder.utils import combine_multiple_dataset
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--to_dataset", required=True, help="Dataset path, a directory")
+    parser.add_argument('--from_datasets', required=True, nargs='+', default=[])
+    parser.add_argument("--overwrite", action="store_true", help="If the dataset_path exists, overwrite it")
+    args = parser.parse_args()
+    if len(args.from_datasets) != 0:
+        combine_multiple_dataset(args.dataset_path,
+                                 *args.from_dataset,
+                                 force_overwrite=args.overwrite,
+                                 try_generate_missing_file=True)