Python tables.VLArray() Examples
The following are 8
code examples of tables.VLArray().
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Example #1
| Source File: hdf5io.py From deepdish with BSD 3-Clause "New" or "Revised" License | 6 votes |
|
def _load_sliced_level(handler, level, sel):
if isinstance(level, tables.link.SoftLink):
# this is a link; get target:
level = level()
if isinstance(level, tables.VLArray):
if level.shape == (1,):
return _load_pickled(level)
else:
return level[sel]
elif isinstance(level, tables.Array):
return level[sel]
else:
raise ValueError('Cannot partially load this data type using `sel`')
Example #2
| Source File: pytables.py From recruit with Apache License 2.0 | 5 votes |
|
def read_array(self, key, start=None, stop=None):
""" read an array for the specified node (off of group """
import tables
node = getattr(self.group, key)
attrs = node._v_attrs
transposed = getattr(attrs, 'transposed', False)
if isinstance(node, tables.VLArray):
ret = node[0][start:stop]
else:
dtype = getattr(attrs, 'value_type', None)
shape = getattr(attrs, 'shape', None)
if shape is not None:
# length 0 axis
ret = np.empty(shape, dtype=dtype)
else:
ret = node[start:stop]
if dtype == u'datetime64':
# reconstruct a timezone if indicated
ret = _set_tz(ret, getattr(attrs, 'tz', None), coerce=True)
elif dtype == u'timedelta64':
ret = np.asarray(ret, dtype='m8[ns]')
if transposed:
return ret.T
else:
return ret
Example #3
| Source File: pytables.py From vnpy_crypto with MIT License | 5 votes |
|
def read_array(self, key, start=None, stop=None):
""" read an array for the specified node (off of group """
import tables
node = getattr(self.group, key)
attrs = node._v_attrs
transposed = getattr(attrs, 'transposed', False)
if isinstance(node, tables.VLArray):
ret = node[0][start:stop]
else:
dtype = getattr(attrs, 'value_type', None)
shape = getattr(attrs, 'shape', None)
if shape is not None:
# length 0 axis
ret = np.empty(shape, dtype=dtype)
else:
ret = node[start:stop]
if dtype == u('datetime64'):
# reconstruct a timezone if indicated
ret = _set_tz(ret, getattr(attrs, 'tz', None), coerce=True)
elif dtype == u('timedelta64'):
ret = np.asarray(ret, dtype='m8[ns]')
if transposed:
return ret.T
else:
return ret
Example #4
| Source File: pytables.py From Computable with MIT License | 5 votes |
|
def read_array(self, key):
""" read an array for the specified node (off of group """
import tables
node = getattr(self.group, key)
data = node[:]
attrs = node._v_attrs
transposed = getattr(attrs, 'transposed', False)
if isinstance(node, tables.VLArray):
ret = data[0]
else:
dtype = getattr(attrs, 'value_type', None)
shape = getattr(attrs, 'shape', None)
if shape is not None:
# length 0 axis
ret = np.empty(shape, dtype=dtype)
else:
ret = data
if dtype == u('datetime64'):
ret = np.array(ret, dtype='M8[ns]')
elif dtype == u('timedelta64'):
if _np_version_under1p7:
raise TypeError(
"timedelta64 is not supported under under numpy < 1.7")
ret = np.array(ret, dtype='m8[ns]')
if transposed:
return ret.T
else:
return ret
Example #5
| Source File: pytables.py From predictive-maintenance-using-machine-learning with Apache License 2.0 | 5 votes |
|
def read_array(self, key, start=None, stop=None):
""" read an array for the specified node (off of group """
import tables
node = getattr(self.group, key)
attrs = node._v_attrs
transposed = getattr(attrs, 'transposed', False)
if isinstance(node, tables.VLArray):
ret = node[0][start:stop]
else:
dtype = getattr(attrs, 'value_type', None)
shape = getattr(attrs, 'shape', None)
if shape is not None:
# length 0 axis
ret = np.empty(shape, dtype=dtype)
else:
ret = node[start:stop]
if dtype == u'datetime64':
# reconstruct a timezone if indicated
ret = _set_tz(ret, getattr(attrs, 'tz', None), coerce=True)
elif dtype == u'timedelta64':
ret = np.asarray(ret, dtype='m8[ns]')
if transposed:
return ret.T
else:
return ret
Example #6
| Source File: running_stats.py From dataset_loaders with GNU General Public License v3.0 | 5 votes |
|
def preprocess(arr, shape):
if type(arr) is tables.VLArray:
newarr = VLArrayWrapper(arr, shape)
if type(arr) is tables.EArray:
newarr = EArrayWrapper(arr, shape)
return newarr
Example #7
| Source File: pytables.py From Splunking-Crime with GNU Affero General Public License v3.0 | 5 votes |
|
def read_array(self, key, start=None, stop=None):
""" read an array for the specified node (off of group """
import tables
node = getattr(self.group, key)
attrs = node._v_attrs
transposed = getattr(attrs, 'transposed', False)
if isinstance(node, tables.VLArray):
ret = node[0][start:stop]
else:
dtype = getattr(attrs, 'value_type', None)
shape = getattr(attrs, 'shape', None)
if shape is not None:
# length 0 axis
ret = np.empty(shape, dtype=dtype)
else:
ret = node[start:stop]
if dtype == u('datetime64'):
# reconstruct a timezone if indicated
ret = _set_tz(ret, getattr(attrs, 'tz', None), coerce=True)
elif dtype == u('timedelta64'):
ret = np.asarray(ret, dtype='m8[ns]')
if transposed:
return ret.T
else:
return ret
Example #8
| Source File: pytables.py From elasticintel with GNU General Public License v3.0 | 5 votes |
|
def read_array(self, key, start=None, stop=None):
""" read an array for the specified node (off of group """
import tables
node = getattr(self.group, key)
attrs = node._v_attrs
transposed = getattr(attrs, 'transposed', False)
if isinstance(node, tables.VLArray):
ret = node[0][start:stop]
else:
dtype = getattr(attrs, 'value_type', None)
shape = getattr(attrs, 'shape', None)
if shape is not None:
# length 0 axis
ret = np.empty(shape, dtype=dtype)
else:
ret = node[start:stop]
if dtype == u('datetime64'):
# reconstruct a timezone if indicated
ret = _set_tz(ret, getattr(attrs, 'tz', None), coerce=True)
elif dtype == u('timedelta64'):
ret = np.asarray(ret, dtype='m8[ns]')
if transposed:
return ret.T
else:
return ret
