issues: 97554858
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| id | node_id | number | title | user | state | locked | assignee | milestone | comments | created_at | updated_at | closed_at | author_association | active_lock_reason | draft | pull_request | body | reactions | performed_via_github_app | state_reason | repo | type |
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| 97554858 | MDU6SXNzdWU5NzU1NDg1OA== | 497 | Better error message when reading netCDF4 file and netCDF4 not installed | 5356122 | closed | 0 | 7 | 2015-07-27T21:07:49Z | 2019-02-01T15:20:46Z | 2017-05-25T02:06:07Z | MEMBER | Trying to load a file without netcdf4 dependency: ``` xray.open_dataset('20150629_ave_mrr.nc') ...TypeError Traceback (most recent call last) /Users/clark.fitzgerald/projects/mrr/june29_analysis.py in <module>() 7 import xray 8 ----> 9 mrr = xray.open_dataset('20150629_ave_mrr.nc') /Users/clark.fitzgerald/anaconda/envs/xray_dev/lib/python2.7/site-packages/xray-0.5.2_98_g69f7386-py2.7.egg/xray/backends/api.pyc in open_dataset(filename_or_obj, group, decode_cf, mask_and_scale, decode_times, concat_characters, decode_coords, engine, chunks, lock) 166 store = backends.NetCDF4DataStore(filename_or_obj, group=group) 167 elif engine == 'scipy': --> 168 store = backends.ScipyDataStore(filename_or_obj) 169 elif engine == 'pydap': 170 store = backends.PydapDataStore(filename_or_obj) /Users/clark.fitzgerald/anaconda/envs/xray_dev/lib/python2.7/site-packages/xray-0.5.2_98_g69f7386-py2.7.egg/xray/backends/scipy_.pyc in init(self, filename_or_obj, mode, format, group, writer, mmap) 95 filename_or_obj = BytesIO(filename_or_obj) 96 self.ds = scipy.io.netcdf_file( ---> 97 filename_or_obj, mode=mode, mmap=mmap, version=version) 98 super(ScipyDataStore, self).init(writer) 99 /Users/clark.fitzgerald/anaconda/envs/xray_dev/lib/python2.7/site-packages/scipy/io/netcdf.pyc in init(self, filename, mode, mmap, version) 216 217 if mode == 'r': --> 218 self._read() 219 220 def setattr(self, attr, value): /Users/clark.fitzgerald/anaconda/envs/xray_dev/lib/python2.7/site-packages/scipy/io/netcdf.pyc in _read(self) 506 if not magic == b'CDF': 507 raise TypeError("Error: %s is not a valid NetCDF 3 file" % --> 508 self.filename) 509 self.dict['version_byte'] = fromstring(self.fp.read(1), '>b')[0] 510 TypeError: Error: 20150629_ave_mrr.nc is not a valid NetCDF 3 file ``` It would be more helpful to suggest that the user install netcdf4. |
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completed | 13221727 | issue |