Source code for pynwb.base

from warnings import warn
from import Iterable

from hdmf.utils import docval, getargs, popargs, call_docval_func
from hdmf.common import DynamicTable

from . import register_class, CORE_NAMESPACE
from .core import NWBDataInterface, MultiContainerInterface, NWBData

[docs]@register_class('ProcessingModule', CORE_NAMESPACE) class ProcessingModule(MultiContainerInterface): """ Processing module. This is a container for one or more containers that provide data at intermediate levels of analysis ProcessingModules should be created through calls to NWB.create_module(). They should not be instantiated directly """ __nwbfields__ = ('description',) __clsconf__ = { 'attr': 'data_interfaces', 'add': 'add', 'type': (NWBDataInterface, DynamicTable), 'get': 'get' } @docval({'name': 'name', 'type': str, 'doc': 'The name of this processing module'}, {'name': 'description', 'type': str, 'doc': 'Description of this processing module'}, {'name': 'data_interfaces', 'type': (list, tuple, dict), 'doc': 'NWBDataInterfacess that belong to this ProcessingModule', 'default': None}) def __init__(self, **kwargs): call_docval_func(super(ProcessingModule, self).__init__, kwargs) self.description = popargs('description', kwargs) self.data_interfaces = popargs('data_interfaces', kwargs) @property def containers(self): return self.data_interfaces def __getitem__(self, arg): return self.get(arg)
[docs] @docval({'name': 'container', 'type': (NWBDataInterface, DynamicTable), 'doc': 'the NWBDataInterface to add to this Module'}) def add_container(self, **kwargs): ''' Add an NWBContainer to this ProcessingModule ''' container = getargs('container', kwargs) warn(PendingDeprecationWarning('add_container will be replaced by add')) self.add(container)
[docs] @docval({'name': 'container_name', 'type': str, 'doc': 'the name of the NWBContainer to retrieve'}) def get_container(self, **kwargs): ''' Retrieve an NWBContainer from this ProcessingModule ''' container_name = getargs('container_name', kwargs) warn(PendingDeprecationWarning('get_container will be replaced by get')) return self.get(container_name)
[docs] @docval({'name': 'NWBDataInterface', 'type': (NWBDataInterface, DynamicTable), 'doc': 'the NWBDataInterface to add to this Module'}) def add_data_interface(self, **kwargs): NWBDataInterface = getargs('NWBDataInterface', kwargs) warn(PendingDeprecationWarning('add_data_interface will be replaced by add')) self.add(NWBDataInterface)
[docs] @docval({'name': 'data_interface_name', 'type': str, 'doc': 'the name of the NWBContainer to retrieve'}) def get_data_interface(self, **kwargs): data_interface_name = getargs('data_interface_name', kwargs) warn(PendingDeprecationWarning('get_data_interface will be replaced by get')) return self.get(data_interface_name)
[docs]@register_class('TimeSeries', CORE_NAMESPACE) class TimeSeries(NWBDataInterface): """A generic base class for time series data""" __nwbfields__ = ("comments", "description", "data", "resolution", "conversion", "unit", "timestamps", "timestamps_unit", "interval", "starting_time", "rate", "starting_time_unit", "control", "control_description") __time_unit = "seconds" @docval({'name': 'name', 'type': str, 'doc': 'The name of this TimeSeries dataset'}, # required {'name': 'data', 'type': ('array_data', 'data', 'TimeSeries'), 'doc': ('The data values. The first dimension must be time. ' 'Can also store binary data, e.g., image frames'), 'default': None}, {'name': 'unit', 'type': str, 'doc': 'The base unit of measurement (should be SI unit)', 'default': None}, {'name': 'resolution', 'type': (str, 'float'), 'doc': 'The smallest meaningful difference (in specified unit) between values in data', 'default': -1.0}, {'name': 'conversion', 'type': (str, 'float'), 'doc': 'Scalar to multiply each element in data to convert it to the specified unit', 'default': 1.0}, {'name': 'timestamps', 'type': ('array_data', 'data', 'TimeSeries'), 'shape': (None,), 'doc': 'Timestamps for samples stored in data', 'default': None}, {'name': 'starting_time', 'type': 'float', 'doc': 'The timestamp of the first sample', 'default': None}, {'name': 'rate', 'type': 'float', 'doc': 'Sampling rate in Hz', 'default': None}, {'name': 'comments', 'type': str, 'doc': 'Human-readable comments about this TimeSeries dataset', 'default': 'no comments'}, {'name': 'description', 'type': str, 'doc': 'Description of this TimeSeries dataset', 'default': 'no description'}, {'name': 'control', 'type': Iterable, 'doc': 'Numerical labels that apply to each element in data', 'default': None}, {'name': 'control_description', 'type': Iterable, 'doc': 'Description of each control value', 'default': None}) def __init__(self, **kwargs): """Create a TimeSeries object """ call_docval_func(super(TimeSeries, self).__init__, kwargs) keys = ("resolution", "comments", "description", "conversion", "unit", "control", "control_description") for key in keys: val = kwargs.get(key) if val is not None: setattr(self, key, val) data = getargs('data', kwargs) self.fields['data'] = data timestamps = kwargs.get('timestamps') starting_time = kwargs.get('starting_time') rate = kwargs.get('rate') if timestamps is not None: if rate is not None: raise ValueError('Specifying rate and timestamps is not supported.') if starting_time is not None: raise ValueError('Specifying starting_time and timestamps is not supported.') self.fields['timestamps'] = timestamps self.timestamps_unit = self.__time_unit self.interval = 1 if isinstance(timestamps, TimeSeries): timestamps.__add_link('timestamp_link', self) elif rate is not None: self.rate = rate if starting_time is not None: self.starting_time = starting_time else: self.starting_time = 0.0 self.starting_time_unit = self.__time_unit else: raise TypeError("either 'timestamps' or 'rate' must be specified") @property def num_samples(self): ''' Tries to return the number of data samples. If this cannot be assessed, returns None. ''' def unreadable_warning(attr): return ( 'The {} attribute on this TimeSeries (named: {}) has a __len__, ' 'but it cannot be read'.format(attr, ) def no_len_warning(attr): return 'The {} attribute on this TimeSeries (named: {}) has no __len__'.format(attr, if hasattr(, '__len__'): try: return len( # for an ndarray this will return the first element of shape except TypeError: warn(unreadable_warning('data'), UserWarning) else: warn(no_len_warning('data'), UserWarning) if hasattr(self, 'timestamps'): if hasattr(self.timestamps, '__len__'): try: return len(self.timestamps) except TypeError: warn(unreadable_warning('timestamps'), UserWarning) elif not (hasattr(self, 'rate') and hasattr(self, 'starting_time')): warn(no_len_warning('timestamps'), UserWarning) @property def data(self): if isinstance(self.fields['data'], TimeSeries): return self.fields['data'].data else: return self.fields['data'] @property def data_link(self): return self.__get_links('data_link') @property def timestamps(self): if 'timestamps' not in self.fields: return None if isinstance(self.fields['timestamps'], TimeSeries): return self.fields['timestamps'].timestamps else: return self.fields['timestamps'] @property def timestamp_link(self): return self.__get_links('timestamp_link') def __get_links(self, links): ret = self.fields.get(links, list()) if ret is not None: ret = set(ret) return ret def __add_link(self, links_key, link): self.fields.setdefault(links_key, list()).append(link) @property def time_unit(self): return self.__time_unit
[docs]@register_class('Image', CORE_NAMESPACE) class Image(NWBData): """ Abstract image class. It is recommended to instead use pynwb.image.GrayscaleImage or pynwb.image.RGPImage where appropriate. """ __nwbfields__ = ('data', 'resolution', 'description') @docval({'name': 'name', 'type': str, 'doc': 'The name of this TimeSeries dataset'}, {'name': 'data', 'type': ('array_data', 'data'), 'doc': 'data of image. Dimensions: x, y [, r,g,b[,a]]', 'shape': ((None, None), (None, None, 3), (None, None, 4))}, {'name': 'resolution', 'type': 'float', 'doc': 'pixels / cm', 'default': None}, {'name': 'description', 'type': str, 'doc': 'description of image', 'default': None}) def __init__(self, **kwargs): call_docval_func(super(Image, self).__init__, kwargs) self.resolution = kwargs['resolution'] self.description = kwargs['description']
[docs]@register_class('Images', CORE_NAMESPACE) class Images(MultiContainerInterface): __nwbfields__ = ('description',) __clsconf__ = { 'attr': 'images', 'add': 'add_image', 'type': Image, 'get': 'get_image', 'create': 'create_image' } @docval({'name': 'name', 'type': str, 'doc': 'The name of this set of images'}, {'name': 'images', 'type': 'array_data', 'doc': 'image objects', 'default': None}, {'name': 'description', 'type': str, 'doc': 'description of images', 'default': 'no description'}) def __init__(self, **kwargs): name, description, images = popargs('name', 'description', 'images', kwargs) super(Images, self).__init__(name, **kwargs) self.description = description self.images = images