# ValueError: unrecognized engine radolan must be one of: \['netcdf4', 'h5netcdf', 'scipy', 'rasterio', 'store'\] **URL:** \ **Category:** Openradar\ **Tags:** wradlib\ **Created:** [December 9, 2022, 10:00pm UTC](https://openradar.discourse.group/t/valueerror-unrecognized-engine-radolan-must-be-one-of-netcdf4-h5netcdf-scipy-rasterio-store/124 "2022-12-09T22:00:48Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![mnovitasari](https://yyz2.discourse-cdn.com/free1/user_avatar/openradar.discourse.group/mnovitasari/32/63_2.png) [@mnovitasari](https://openradar.discourse.group/u/mnovitasari)\ **Post date:** [December 9, 2022, 10:00pm UTC](https://openradar.discourse.group/t/valueerror-unrecognized-engine-radolan-must-be-one-of-netcdf4-h5netcdf-scipy-rasterio-store/124/1 "2022-12-09T22:00:49Z")
Hi, I am trying to open radolan data using wradlib using xarray backend. I’ve tried as follows: ds = xr.open\_mfdataset(rw\_filename, engine=“radolan”) and ds = wrl.io.open\_radolan\_dataset(rw\_filename) But both didn’t work and I kept getting the following errors: … → 120 raise ValueError( 121 f"unrecognized engine {engine} must be one of: {list(engines)}" 122 ) ValueError: unrecognized engine radolan must be one of: [‘netcdf4’, ‘h5netcdf’, ‘scipy’, ‘rasterio’, ‘store’] Any suggestion will be appreciated. Many thanks! ---
**Author:** ![kmuehlbauer](https://yyz2.discourse-cdn.com/free1/user_avatar/openradar.discourse.group/kmuehlbauer/32/439_2.png) [@kmuehlbauer](https://openradar.discourse.group/u/kmuehlbauer)\ **Post date:** [December 9, 2022, 10:08pm UTC](https://openradar.discourse.group/t/valueerror-unrecognized-engine-radolan-must-be-one-of-netcdf4-h5netcdf-scipy-rasterio-store/124/2 "2022-12-09T22:08:10Z")
@mnovitasari Please check, if wradlib is installed. If so, which version of wradlib is installed. The error message indicates, that wradlib might not be installed at all, or a very ancient version. Best, Kai ---
**Author:** ![mnovitasari](https://yyz2.discourse-cdn.com/free1/user_avatar/openradar.discourse.group/mnovitasari/32/63_2.png) [@mnovitasari](https://openradar.discourse.group/u/mnovitasari)\ **Post date:** [December 10, 2022, 3:47pm UTC](https://openradar.discourse.group/t/valueerror-unrecognized-engine-radolan-must-be-one-of-netcdf4-h5netcdf-scipy-rasterio-store/124/3 "2022-12-10T15:47:14Z")
Many thanks for your reply. Finally, I’ve managed to fix this by changing the compatibility version of every wradlib-related library (e.g. xarray, gdal, etc.) and updating all the conda packages. ---
**Author:** ![kmuehlbauer](https://yyz2.discourse-cdn.com/free1/user_avatar/openradar.discourse.group/kmuehlbauer/32/439_2.png) [@kmuehlbauer](https://openradar.discourse.group/u/kmuehlbauer)\ **Post date:** [December 10, 2022, 3:59pm UTC](https://openradar.discourse.group/t/valueerror-unrecognized-engine-radolan-must-be-one-of-netcdf4-h5netcdf-scipy-rasterio-store/124/4 "2022-12-10T15:59:16Z")
@mnovitasari You’re welcome. Glad you found a way to fix your environment.