本文整理汇总了Python中xray.Dataset.concat方法的典型用法代码示例。如果您正苦于以下问题：Python Dataset.concat方法的具体用法？Python Dataset.concat怎么用？Python Dataset.concat使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类xray.Dataset的用法示例。
在下文中一共展示了Dataset.concat方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_concat
# 需要导入模块: from xray import Dataset [as 别名]
# 或者: from xray.Dataset import concat [as 别名]
def test_concat(self):
data = create_test_data()
split_data = [data.indexed(dim1=slice(10)),
data.indexed(dim1=slice(10, None))]
self.assertDatasetIdentical(data, Dataset.concat(split_data, 'dim1'))
def rectify_dim_order(dataset):
# return a new dataset with all variable dimensions tranposed into
# the order in which they are found in `data`
return Dataset({k: v.transpose(*data[k].dimensions)
for k, v in dataset.variables.iteritems()},
dataset.attrs)
for dim in ['dim1', 'dim2', 'dim3']:
datasets = [g for _, g in data.groupby(dim, squeeze=False)]
self.assertDatasetIdentical(data, Dataset.concat(datasets, dim))
self.assertDatasetIdentical(
data, Dataset.concat(datasets, data[dim]))
self.assertDatasetIdentical(
data, Dataset.concat(datasets, data[dim], mode='minimal'))
datasets = [g for _, g in data.groupby(dim, squeeze=True)]
concat_over = [k for k, v in data.variables.iteritems()
if dim in v.dimensions and k != dim]
actual = Dataset.concat(datasets, data[dim],
concat_over=concat_over)
self.assertDatasetIdentical(data, rectify_dim_order(actual))
actual = Dataset.concat(datasets, data[dim], mode='different')
self.assertDatasetIdentical(data, rectify_dim_order(actual))
# Now add a new variable that doesn't depend on any of the current
# dims and make sure the mode argument behaves as expected
data['var4'] = ('dim4', np.arange(data.dimensions['dim3']))
for dim in ['dim1', 'dim2', 'dim3']:
datasets = [g for _, g in data.groupby(dim, squeeze=False)]
actual = Dataset.concat(datasets, data[dim], mode='all')
expected = np.array([data['var4'].values
for _ in range(data.dimensions[dim])])
self.assertArrayEqual(actual['var4'].values, expected)
actual = Dataset.concat(datasets, data[dim], mode='different')
self.assertDataArrayEqual(data['var4'], actual['var4'])
actual = Dataset.concat(datasets, data[dim], mode='minimal')
self.assertDataArrayEqual(data['var4'], actual['var4'])
# verify that the dimension argument takes precedence over
# concatenating dataset variables of the same name
dimension = (2 * data['dim1']).rename('dim1')
datasets = [g for _, g in data.groupby('dim1', squeeze=False)]
expected = data.copy()
expected['dim1'] = dimension
self.assertDatasetIdentical(
expected, Dataset.concat(datasets, dimension))
# TODO: factor this into several distinct tests
data = create_test_data()
split_data = [data.indexed(dim1=slice(10)),
data.indexed(dim1=slice(10, None))]
with self.assertRaisesRegexp(ValueError, 'must supply at least one'):
Dataset.concat([], 'dim1')
with self.assertRaisesRegexp(ValueError, 'not all elements in'):
Dataset.concat(split_data, 'dim1', concat_over=['not_found'])
with self.assertRaisesRegexp(ValueError, 'global attributes not'):
data0, data1 = deepcopy(split_data)
data1.attrs['foo'] = 'bar'
Dataset.concat([data0, data1], 'dim1', compat='identical')
self.assertDatasetIdentical(
data, Dataset.concat([data0, data1], 'dim1', compat='equals'))
with self.assertRaisesRegexp(ValueError, 'encountered unexpected'):
data0, data1 = deepcopy(split_data)
data1['foo'] = ('bar', np.random.randn(10))
Dataset.concat([data0, data1], 'dim1')
with self.assertRaisesRegexp(ValueError, 'not equal across datasets'):
data0, data1 = deepcopy(split_data)
data1['dim2'] = 2 * data1['dim2']
Dataset.concat([data0, data1], 'dim1')示例2: test_concat
# 需要导入模块: from xray import Dataset [as 别名]
# 或者: from xray.Dataset import concat [as 别名]
def test_concat(self):
data = create_test_data()
split_data = [data.indexed_by(dim1=slice(10)),
data.indexed_by(dim1=slice(10, None))]
self.assertDatasetEqual(data, Dataset.concat(split_data, 'dim1'))
def rectify_dim_order(dataset):
# return a new dataset with all variable dimensions tranposed into
# the order in which they are found in `data`
return Dataset({k: v.transpose(*data[k].dimensions)
for k, v in dataset.variables.iteritems()},
dataset.attributes)
for dim in ['dim1', 'dim2', 'dim3']:
datasets = [ds for _, ds in data.groupby(dim, squeeze=False)]
self.assertDatasetEqual(data, Dataset.concat(datasets, dim))
self.assertDatasetEqual(data, Dataset.concat(datasets, data[dim]))
self.assertDatasetEqual(data, Dataset.concat(datasets, data[dim].variable))
datasets = [ds for _, ds in data.groupby(dim, squeeze=True)]
concat_over = [k for k, v in data.variables.iteritems()
if dim in v.dimensions and k != dim]
actual = Dataset.concat(datasets, data[dim], concat_over=concat_over)
self.assertDatasetEqual(data, rectify_dim_order(actual))
# verify that the dimension argument takes precedence over
# concatenating dataset variables of the same name
dimension = (2 * data['dim1']).rename('dim1')
datasets = [ds for _, ds in data.groupby('dim1', squeeze=False)]
expected = data.copy()
expected['dim1'] = dimension
self.assertDatasetEqual(expected, Dataset.concat(datasets, dimension))
with self.assertRaisesRegexp(ValueError, 'cannot be empty'):
Dataset.concat([], 'dim1')
with self.assertRaisesRegexp(ValueError, 'not all elements in'):
Dataset.concat(split_data, 'dim1', concat_over=['not_found'])
with self.assertRaisesRegexp(ValueError, 'global attributes not'):
data0, data1 = deepcopy(split_data)
data1.attributes['foo'] = 'bar'
Dataset.concat([data0, data1], 'dim1')
with self.assertRaisesRegexp(ValueError, 'encountered unexpected'):
data0, data1 = deepcopy(split_data)
data1['foo'] = ('bar', np.random.randn(10))
Dataset.concat([data0, data1], 'dim1')
with self.assertRaisesRegexp(ValueError, 'not equal across datasets'):
data0, data1 = deepcopy(split_data)
data1['dim2'] = 2 * data1['dim2']
Dataset.concat([data0, data1], 'dim1')