def _add_field(self,
name,
val=None,
unit=None,
write_level=None,
suffix=None,
**field_args):
"""Add a {field_type} field to the dataset"""
if name in self._fields:
raise exceptions.FieldExistsError(
f"Field {name!r} already exists in dataset")
# Create collections for nested fields
collection, _, field_name = name.rpartition(".")
if collection and collection not in self._fields:
self.add_collection(collection)
# Create field
field = func(num_obs=self.num_obs,
name=field_name,
val=val,
unit=unit,
write_level=write_level,
**field_args)
# Add field to list of fields
fields = getattr(self, collection) if collection else self._fields
fields[field_name] = field
def update_from(self, other: "Dataset") -> None:
"""Transfers dataset fields from other Dataset to this Dataset
This will not create a copy of the data in the other Dataset
"""
self.num_obs = other.num_obs
for fieldname, field in other._fields.items():
if fieldname in self._fields:
raise exceptions.FieldExistsError(
f"Field {fieldname!r} already exists in dataset")
self._fields.update({fieldname: field})
self.meta.update(other.meta)