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
152040420,MDU6SXNzdWUxNTIwNDA0MjA=,838,MADIS netCDF to Pandas Dataframe: ValueError: iterator is too large,210858,open,0,,,8,2016-04-30T16:48:53Z,2020-02-21T20:32:04Z,,NONE,,,,"Getting started with xarray 0.7 (python2.7 RHEL7.2 64bit) and I am having trouble converting a [MADIS](http://madis.noaa.gov/) produced netCDF file to a pandas Dataframe.  Here's the traceback

``` text
Traceback (most recent call last):
  File ""test.py"", line 3, in <module>
    df = nc.to_dataframe()
  File ""/usr/lib/python2.7/site-packages/xarray/core/dataset.py"", line 1867, in to_dataframe
    return self._to_dataframe(self.dims)
  File ""/usr/lib/python2.7/site-packages/xarray/core/dataset.py"", line 1856, in _to_dataframe
    for k in columns]
  File ""/usr/lib/python2.7/site-packages/xarray/core/variable.py"", line 715, in expand_dims
    expanded_data = ops.broadcast_to(self.data, tmp_shape)
  File ""/usr/lib/python2.7/site-packages/xarray/core/ops.py"", line 65, in f
    return getattr(eager_module, name)(data, *args, **kwargs)
  File ""/usr/lib64/python2.7/site-packages/numpy/lib/stride_tricks.py"", line 115, in broadcast_to
    return _broadcast_to(array, shape, subok=subok, readonly=True)
  File ""/usr/lib64/python2.7/site-packages/numpy/lib/stride_tricks.py"", line 70, in _broadcast_to
    op_flags=[op_flag], itershape=shape, order='C').itviews[0]
ValueError: iterator is too large
```

here's the code

``` python
import xarray as xr
nc = xr.open_dataset('20160430_1600.nc', decode_cf=False)
df = nc.to_dataframe()
```

Here's the [netcdf file](http://mesonet.agron.iastate.edu/pickup/madis/20160430_1600.nc)

Thanks!
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