def test_coordinates_encoding(self):
def equals_latlon(obj):
return obj == 'lat lon' or obj == 'lon lat'
original = Dataset({
'temp': ('x', [0, 1]),
'precip': ('x', [0, -1])
}, {
'lat': ('x', [2, 3]),
'lon': ('x', [4, 5])
})
with self.roundtrip(original) as actual:
self.assertDatasetIdentical(actual, original)
with create_tmp_file() as tmp_file:
original.to_netcdf(tmp_file)
with open_dataset(tmp_file, decode_coords=False) as ds:
self.assertTrue(equals_latlon(ds['temp'].attrs['coordinates']))
self.assertTrue(
equals_latlon(ds['precip'].attrs['coordinates']))
self.assertNotIn('coordinates', ds.attrs)
self.assertNotIn('coordinates', ds['lat'].attrs)
self.assertNotIn('coordinates', ds['lon'].attrs)
modified = original.drop(['temp', 'precip'])
with self.roundtrip(modified) as actual:
self.assertDatasetIdentical(actual, modified)
with create_tmp_file() as tmp_file:
modified.to_netcdf(tmp_file)
with open_dataset(tmp_file, decode_coords=False) as ds:
self.assertTrue(equals_latlon(ds.attrs['coordinates']))
self.assertNotIn('coordinates', ds['lat'].attrs)
self.assertNotIn('coordinates', ds['lon'].attrs)
def test_coordinates_encoding(self):
def equals_latlon(obj):
return obj == 'lat lon' or obj == 'lon lat'
original = Dataset({'temp': ('x', [0, 1]), 'precip': ('x', [0, -1])},
{'lat': ('x', [2, 3]), 'lon': ('x', [4, 5])})
with self.roundtrip(original) as actual:
self.assertDatasetIdentical(actual, original)
with create_tmp_file() as tmp_file:
original.to_netcdf(tmp_file)
with open_dataset(tmp_file, decode_coords=False) as ds:
self.assertTrue(equals_latlon(ds['temp'].attrs['coordinates']))
self.assertTrue(equals_latlon(ds['precip'].attrs['coordinates']))
self.assertNotIn('coordinates', ds.attrs)
self.assertNotIn('coordinates', ds['lat'].attrs)
self.assertNotIn('coordinates', ds['lon'].attrs)
modified = original.drop(['temp', 'precip'])
with self.roundtrip(modified) as actual:
self.assertDatasetIdentical(actual, modified)
with create_tmp_file() as tmp_file:
modified.to_netcdf(tmp_file)
with open_dataset(tmp_file, decode_coords=False) as ds:
self.assertTrue(equals_latlon(ds.attrs['coordinates']))
self.assertNotIn('coordinates', ds['lat'].attrs)
self.assertNotIn('coordinates', ds['lon'].attrs)
def test_roundtrip_coordinates(self):
original = Dataset({'foo': ('x', [0, 1])}, {
'x': [2, 3],
'y': ('a', [42]),
'z': ('x', [4, 5])
})
with self.roundtrip(original) as actual:
self.assertDatasetIdentical(original, actual)
expected = original.drop('foo')
with self.roundtrip(expected) as actual:
self.assertDatasetIdentical(expected, actual)
expected = original.copy()
expected.attrs['coordinates'] = 'something random'
with self.assertRaisesRegexp(ValueError, 'cannot serialize'):
with self.roundtrip(expected):
pass
expected = original.copy(deep=True)
expected['foo'].attrs['coordinates'] = 'something random'
with self.assertRaisesRegexp(ValueError, 'cannot serialize'):
with self.roundtrip(expected):
pass
def test_roundtrip_coordinates(self):
original = Dataset({'foo': ('x', [0, 1])},
{'x': [2, 3], 'y': ('a', [42]), 'z': ('x', [4, 5])})
with self.roundtrip(original) as actual:
self.assertDatasetIdentical(original, actual)
expected = original.drop('foo')
with self.roundtrip(expected) as actual:
self.assertDatasetIdentical(expected, actual)
expected = original.copy()
expected.attrs['coordinates'] = 'something random'
with self.assertRaisesRegexp(ValueError, 'cannot serialize'):
with self.roundtrip(expected):
pass
expected = original.copy(deep=True)
expected['foo'].attrs['coordinates'] = 'something random'
with self.assertRaisesRegexp(ValueError, 'cannot serialize'):
with self.roundtrip(expected):
pass
