def __init__(self, input_port, lowcut, highcut, order=4):
Node.__init__(self, input_port)
self.output.set_parameters(
data_type=self.input.data_type,
channels=self.input.channels,
sampling_frequency=self.input.sampling_frequency,
meta=self.input.meta,
epoching_frequency=self.input.epoching_frequency
)
fs = self.input.sampling_frequency
nyq = 0.5 * fs
low = lowcut / nyq
high = highcut / nyq
# calculate a and b, properties of the Butter filter
self._b, self._a = signal.butter(
order,
[low, high],
analog=False,
btype='band',
output='ba')
# initial condition zi
len_to_conserve = max(len(self._a), len(self._b)) - 1
self._zi = np.zeros((len(self.input.channels), len_to_conserve))
Node.log_instance(self, {
'lowcut': lowcut,
'highcut': highcut,
'order': order
})
def __init__(self, input_port, marker_input_port, stimulation, offset, duration):
Node.__init__(self, input_port)
self.marker_input = marker_input_port
self.output.set_parameters(
data_type='epoch',
channels=self.input.channels,
sampling_frequency=self.input.sampling_frequency,
meta=self.input.meta,
epoching_frequency=0
)
self.stimulation = stimulation
self.duration = duration
self.offset = offset
# persitent is data of a non-complete epoch
self.persistent = pd.DataFrame([], [], self.input.channels)
self.markers = []
Node.log_instance(self, {
'marker port': self.marker_input.id,
'stimulation': self.stimulation,
'type stimulation': type(self.stimulation),
'offset': self.offset,
'duration': self.duration})
def __init__(self, input_port, model_file, output):
Node.__init__(self, input_port)
# load model from save
self._loaded_model = joblib.load(model_file)
assert output in ['class', 'probability']
self._output = output
# verify the input signal type
if self._output == 'class':
self._columns = ['class']
elif self._output == 'probability':
self._columns = self.input.channels
# set the ouput Port parameters
self.output.set_parameters(
data_type='signal',
channels=self._columns,
sampling_frequency=self.input.sampling_frequency,
meta=self.input.meta
)
# log the new instance
Node.log_instance(self, {
'path to model': model_file,
'model': self._loaded_model
})
def __init__(self, input_port, frequency_to_remove, quality_factor):
Node.__init__(self, input_port)
self.output.set_parameters(
data_type=self.input.data_type,
channels=self.input.channels,
sampling_frequency=self.input.sampling_frequency,
meta=self.input.meta,
epoching_frequency=self.input.epoching_frequency
)
# calculate a and b, properties of the Butter filter
self._b, self._a = signal.iirnotch(
w0=frequency_to_remove,
Q=quality_factor,
fs=self.input.sampling_frequency)
# initial condition zi
len_to_conserve = max(len(self._a), len(self._b)) - 1
self._zi = np.zeros((len(self.input.channels), len_to_conserve))
Node.log_instance(self, {
'frequency to remove': frequency_to_remove,
'quality factor': quality_factor
})
def __init__(self, file):
Node.__init__(self, None)
try:
config = Config(file)
except (ConfigFileNotInAccordance, FileNotFound, InvalidXml) as err:
print(err)
exit()
self._scenario = config.create_a_new_scenario()
self.output.set_parameters(data_type='marker',
channels=['marker'],
sampling_frequency=0,
meta='')
# create the plot process
self.plot_pipe, plotter_pipe = mp.Pipe()
self.plotter = ProcessStim(len(self._scenario))
self.plot_process = mp.Process(target=self.plotter,
args=(plotter_pipe, ),
daemon=True)
self.plot_process.start()
Node.log_instance(
self, {
'file': file,
'name': config.name,
'author': config.author,
'session': config.session,
'nb of trials': config.number_of_trials,
'classes': config.classes,
'random': config.random,
'type': config.type
})
self._start_time = None
def __init__(self, input_port, duration=10, channels='all', way='index'):
Node.__init__(self, input_port, None)
if channels == 'all':
self._channels = self.input.channels
else:
if way == 'index':
self._channels = [self.input.channels[i - 1] for i in channels]
elif way == 'name':
self._channels = channels
self._duration = float(duration)
# create the plot process
self.plot_pipe, plotter_pipe = mp.Pipe()
self.plotter = ProcessPlotter(self._duration, self._channels,
self.input.sampling_frequency)
self.plot_process = mp.Process(target=self.plotter,
args=(plotter_pipe, ),
daemon=True)
self.plot_process.start()
# Log new instance
Node.log_instance(self, {
'duration': self._duration,
'channels': self._channels
})
def __init__(self, input_port):
Node.__init__(self, input_port)
self.output.set_parameters(
data_type=self.input.data_type,
channels=self.input.channels,
sampling_frequency=self.input.sampling_frequency,
meta=self.input.meta,
epoching_frequency=self.input.epoching_frequency)
Node.log_instance(self, {})
def __init__(self,
input_port,
stat,
quantile=None,
iqr_quantile=[None, None]):
Node.__init__(self, input_port)
assert self.input.data_type == 'epoch'
assert stat in [
'mean', 'min', 'max', 'range', 'std', 'median', 'quantile', 'iqr'
]
self._stat = stat
self.output.set_parameters(
data_type='signal',
channels=self.input.channels,
sampling_frequency=self.input.epoching_frequency,
meta=self.input.meta)
# value attribute in initialized at 0
self.value = np.array([0] * len(self.input.channels))
if self._stat == 'quantile':
assert 0 <= quantile and quantile <= 1
self._q = quantile
Node.log_instance(
self, {
'output frequency': self.input.epoching_frequency,
'stat': self._stat,
'quantile': self._q
})
elif self._stat == 'iqr':
q1 = iqr_quantile[0]
q2 = iqr_quantile[1]
assert 0 <= q1 and q1 <= q2 and q2 <= 1
self._q1 = q1
self._q2 = q2
Node.log_instance(
self, {
'output frequency': self.input.epoching_frequency,
'stat': self._stat,
'quantile1': self._q1,
'quantile2': self._q2
})
else:
Node.log_instance(
self, {
'output frequency': self.input.epoching_frequency,
'stat': self._stat
})
def __init__(self, input_port, file, key):
Node.__init__(self, input_port, None)
filename, file_extension = os.path.splitext(file)
self._file = filename + '.h5'
self._key = key
chan = self.input.channels
pd.DataFrame([] * len(chan), [], chan).to_hdf(self._file,
key=self._key,
mode='w',
format='table')
Node.log_instance(self, {'file': self._file})
def __init__(self, input_port):
Node.__init__(self, input_port, None)
# create the plot process
self.plot_pipe, plotter_pipe = mp.Pipe()
self.plotter = ProcessGraz()
self.plot_process = mp.Process(target=self.plotter,
args=(plotter_pipe, ),
daemon=True)
self.plot_process.start()
# Log new instance
Node.log_instance(self, {})
def __init__(self, input_port):
Node.__init__(self, input_port)
assert self.input.data_type in ['epoch', 'signal']
self.output.set_parameters(
data_type='spectrum',
channels=self.input.channels,
sampling_frequency=self.input.sampling_frequency,
meta=self.input.meta,
epoching_frequency=self.input.epoching_frequency)
Node.log_instance(self, {})
def __init__(self, input_port, file, sep=';', decimal=','):
Node.__init__(self, input_port, None)
filename, file_extension = os.path.splitext(file)
self._file = filename + '.csv'
self._sep = sep
self._decimal = decimal
self._first_iter = True
chan = self.input.channels
pd.DataFrame([] * len(chan), [], chan).to_csv(self._file,
mode='w',
sep=self._sep,
decimal=self._decimal)
Node.log_instance(self, {'file': self._file})
def __init__(self, input_port, matrix):
Node.__init__(self, input_port)
if isinstance(matrix, str):
filename, file_extension = os.path.splitext(matrix)
if file_extension == '.yaml':
logging.debug(f'Got matrix from file {matrix}')
with open(matrix, 'r') as file:
matrix = yaml.load(file, Loader=yaml.FullLoader)
logging.debug(f'{matrix}')
elif file_extension in ['.xml', '.cfg']:
file = minidom.parse(matrix)
coefs = file.getElementsByTagName(
'SettingValue')[0].firstChild.data
coefs = [float(coef) for coef in coefs.split()]
output_ch_nb = int(
file.getElementsByTagName('SettingValue')
[1].firstChild.data)
input_ch_nb = int(
file.getElementsByTagName('SettingValue')
[2].firstChild.data)
assert len(coefs) == input_ch_nb * output_ch_nb
matrix = {
f'Ch{i + 1}':
[coefs[i * input_ch_nb + j] for j in range(input_ch_nb)]
for i in range(output_ch_nb)
}
self._matrix = matrix
self._channels = [*self._matrix.keys()]
str_matrix = f''
for chan in self._channels:
# verify that the size of _matrix is correct
assert len(self._matrix[chan]) == len(self.input.channels)
# convert to float (for format '8e-4')
self._matrix[chan] = [float(i) for i in self._matrix[chan]]
str_matrix += f'\n {chan}: {self._matrix[chan]}'
self.output.set_parameters(
data_type=self.input.data_type,
channels=self._channels,
sampling_frequency=self.input.sampling_frequency,
meta=self.input.meta,
epoching_frequency=self.input.epoching_frequency)
Node.log_instance(self, {'matrix': str_matrix})
def __init__(self, input_port, file):
Node.__init__(self, input_port, None)
filename, file_extension = os.path.splitext(file)
self._file = filename + '.mat'
letters = string.ascii_lowercase
self._key = ''.join(choice(letters) for i in range(3))
self._save_file = 'temporary_file_' + self._key + '.h5'
chan = self.input.channels
pd.DataFrame([] * len(chan), [], chan).to_hdf(self._save_file,
key=self._key,
mode='w',
format='table')
Node.log_instance(self, {'file': self._file})
def __init__(self, input_port, function):
Node.__init__(self, input_port)
assert self.input.data_type in ['epoch', 'signal']
self.output.set_parameters(
data_type=self.input.data_type,
channels=self.input.channels,
sampling_frequency=self.input.sampling_frequency,
meta=self.input.meta,
epoching_frequency=self.input.epoching_frequency)
self.function = function
Node.log_instance(self, {
'function': self.function
})
def __init__(self, input_port, window):
Node.__init__(self, input_port)
assert self.input.data_type == 'epoch'
assert window in ['blackman', 'hanning', 'hamming', 'triang']
self._window = window
self.output.set_parameters(
data_type='epoch',
channels=self.input.channels,
sampling_frequency=self.input.sampling_frequency,
meta=self.input.meta,
epoching_frequency=self.input.epoching_frequency)
self._buffered_windows = {}
Node.log_instance(self, {'window': self._window})
def __init__(self, input_port, marker_input_port):
Node.__init__(self, input_port)
self.marker_input = marker_input_port
self.output.set_parameters(
data_type='epoch',
channels=self.input.channels,
sampling_frequency=self.input.sampling_frequency,
meta=self.input.meta,
epoching_frequency=0)
# persitent is data of a non-complete epoch
self.persistent = pd.DataFrame([], [], self.input.channels)
self.markers_received = pd.DataFrame([], [], self.marker_input.channels)
# current_name is the name to add for current epoch
self.current_name = 'first epoch'
Node.log_instance(self, {'marker port': self.marker_input.id})
def __init__(self, input_port, class_tag=None):
Node.__init__(self, input_port)
self._tag = class_tag
if self._tag:
self._channels = ['class'] + self.input.channels
else:
self._channels = self.input.channels
self.output.set_parameters(
data_type='vector',
channels=self._channels,
sampling_frequency=self.input.sampling_frequency,
meta=self.input.meta)
Node.log_instance(self, {
'tag': self._tag,
'coordinates': self._channels
})
self._i = 0
def __init__(self, input_port, mode, selected):
Node.__init__(self, input_port)
assert mode in ['index', 'name']
# get channels
if mode == 'index':
self._channels = [self.input.channels[i - 1] for i in selected]
elif mode == 'name':
self._channels = selected
self.output.set_parameters(
data_type=self.input.data_type,
channels=self._channels,
sampling_frequency=self.input.sampling_frequency,
meta=self.input.meta,
epoching_frequency=self.input.epoching_frequency)
Node.log_instance(self, {'selected channels': self._channels})
def __init__(self, input_port, downsampling_factor):
Node.__init__(self, input_port)
assert self.input.data_type == 'signal'
self._downsampling_factor = int(downsampling_factor)
self.output.set_parameters(
data_type=self.input.data_type,
channels=self.input.channels,
sampling_frequency=self.input.sampling_frequency / self._downsampling_factor,
meta=self.input.meta,
epoching_frequency=self.input.epoching_frequency
)
Node.log_instance(self, {
'downsampling factor': self._downsampling_factor
})
self.persistent = pd.DataFrame([], [], self.input.channels)
def __init__(self, input_port, arg1, arg2=4):
'''Initialize the node before running the pipeline'''
# create self.input and self.output
Node.__init__(self, input_port)
# make sure you get the right input.data_type
# data_type is either 'epoch', 'signal', 'marker' or 'spectrum'
assert self.input.data_type in ['epoch', 'signal']
# update self.output parameters
self.output.set_parameters(
# self.input.data_type if the data_type of output is the same as
# in input or among ['epoch', 'signal', 'marker', 'spectrum']
data_type=self.input.data_type,
# self.input.channels if the output channels are the same as
# in input else list of output channels (['Ch1', 'Ch2'] for example)
channels=self.input.channels,
# self.input.sampling_frequency if the output sampling frequency is the same as
# in input or specify the new output sampling frequency
sampling_frequency=self.input.sampling_frequency,
# self.input.meta and/or add every details you want to add in meta
meta=self.input.meta,
# if the epoching frequency is unchanged (None or float), specify
# self.input.epoching_frequency else specify the new epoching frequency
epoching_frequency=self.input.epoching_frequency)
# initialize parameters that will be useful for calculation:
# ex:
self._arg1 = arg1 / 10 # _arg means a protected arg
self._channels = self.input.channels
# log all the parameters you think it is useful to log
Node.log_instance(
self,
{
# specify the name of the parameter, and its value
'my arg1': self._arg1
})
def __init__(self, input_port, mode, ref):
Node.__init__(self, input_port)
assert mode in ['index', 'name']
# get reference channel name
if mode == 'index':
self._ref = self.input.channels[ref - 1]
elif mode == 'name':
self._ref = ref
self._channels = self.input.channels.copy()
self._channels.remove(self._ref)
self.output.set_parameters(
data_type=self.input.data_type,
channels=self._channels,
sampling_frequency=self.input.sampling_frequency,
meta=self.input.meta,
epoching_frequency=self.input.epoching_frequency)
Node.log_instance(self, {'reference': self._ref})
def __init__(self, input_port, duration, interval):
Node.__init__(self, input_port)
self.duration = duration
self.interval = interval
self.output.set_parameters(
data_type='epoch',
channels=self.input.channels,
sampling_frequency=self.input.sampling_frequency,
meta=self.input.meta,
epoching_frequency=1 / interval
)
self.persistent = pd.DataFrame([], [], self.input.channels)
self.trigger = None
self.markers = []
Node.log_instance(self, {
'duration': self.duration,
'interval': self.interval
})
def __init__(self, input_port, channels='all', way='index'):
Node.__init__(self, input_port, None)
assert self.input.data_type == 'spectrum'
if channels == 'all':
self._channels = self.input.channels
else:
if way == 'index':
self._channels = [self.input.channels[i - 1] for i in channels]
elif way == 'name':
self._channels = channels
# create the plot process
self.plot_pipe, plotter_pipe = mp.Pipe()
self.plotter = ProcessSpectralPlotter(self._channels)
self.plot_process = mp.Process(target=self.plotter,
args=(plotter_pipe, ),
daemon=True)
self.plot_process.start()
# Log new instance
Node.log_instance(self, {'channels': self._channels})
def __init__(self, file, min_chunk_size=4):
Node.__init__(self, None)
filename, self._file_extension = os.path.splitext(file)
self._events = []
if self._file_extension in ['.gdf', '.set', '.vhdr']:
if self._file_extension == '.gdf':
self._raw = read_raw_gdf(file)
elif self._file_extension == '.set':
self._raw = read_raw_eeglab(file)
elif self._file_extension == '.vhdr':
self._raw = read_raw_brainvision(file)
self._sampling_frequency = self._raw.info['sfreq']
self._channels = self._raw.info.ch_names
try:
# to test
events = find_events(self._raw)
logging.debug('Get from find_events')
except ValueError:
events = events_from_annotations(self._raw)
logging.debug('Get from events_from_annotations')
nb_to_event = {events[1][key]: key for key in events[1]}
for h in events[0]:
try:
value = float(nb_to_event[h[2]])
except ValueError:
value = nb_to_event[h[2]]
self._events.append((h[0] / 1000, value))
self._end_record = self._raw.times[-1]
self._start_record = self._raw.times[0]
elif self._file_extension == '.xdf':
streams, header = pyxdf.load_xdf(file,
synchronize_clocks=False,
verbose=False)
logging.info(f'Found {len(streams)} streams in xdf file')
for ix, stream in enumerate(streams):
sampling_frequency = float(stream['info']['nominal_srate'][0])
if sampling_frequency == 0:
logging.debug(f'Get marker from stream {ix}')
for timestamp, event in zip(stream['time_stamps'],
stream['time_series']):
self._events.append((timestamp, float(event)))
else:
logging.debug(f'Get data from stream {ix}')
self._sampling_frequency = sampling_frequency
nb_chan = int(stream['info']['channel_count'][0])
self._channels = [(stream['info']['desc'][0]['channels'][0]
['channel'][i]['label'][0])
for i in range(nb_chan)]
self._df = pd.DataFrame(stream['time_series'],
stream['time_stamps'],
self._channels)
self._start_record = stream['time_stamps'][0]
self._end_record = stream['time_stamps'][-1]
self.marker_output = Port()
self.marker_output.set_parameters(data_type='marker',
channels=['marker'],
sampling_frequency=0,
meta='')
self.output.set_parameters(data_type='signal',
channels=self._channels,
sampling_frequency=self._sampling_frequency,
meta='')
Node.log_instance(
self, {
'marquers output': self.marker_output.id,
'sampling frequency': self._sampling_frequency,
'channels': self._channels,
'min chunk size': min_chunk_size,
'from file': file
})
self._last_t = None
self._min_period = min_chunk_size / self._sampling_frequency
self._start_time = None
self._flag = True
