/usr/share/pyshared/mvpa/datasets/eep.py is in python-mvpa 0.4.8-3.
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#
# See COPYING file distributed along with the PyMVPA package for the
# copyright and license terms.
#
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"""Dataset that gets its samples from an EEP binary file"""
__docformat__ = 'restructuredtext'
import numpy as N
from mvpa.datasets.channel import ChannelDataset
from mvpa.misc.io.eepbin import EEPBin
from mvpa.base.dochelpers import enhancedDocString
from mvpa.base import warning
class EEPDataset(ChannelDataset):
"""Dataset using a EEP binary file as source.
EEP files are used by *eeprobe* a software for analysing even-related
potentials (ERP), which was developed at the Max-Planck Institute for
Cognitive Neuroscience in Leipzig, Germany.
http://www.ant-neuro.com/products/eeprobe
"""
def __init__(self, samples=None, **kwargs):
"""Initialize EEPDataset.
:Parameters:
samples: Filename (string) of a EEP binary file or an `EEPBin`
object
"""
# dataset props defaults
dt = t0 = channelids = None
# default way to use the constructor: with filename
if not samples is None:
if isinstance(samples, str):
# open the eep file
try:
eb = EEPBin(samples)
except RuntimeError, e:
warning("ERROR: EEPDatasets: Cannot open samples file %s" \
% samples) # should we make also error?
raise e
elif isinstance(samples, EEPBin):
# nothing special
eb = samples
else:
raise ValueError, \
"EEPDataset constructor takes the filename of an " \
"EEP file or a EEPBin object as 'samples' argument."
samples = eb.data
dt = eb.dt
channelids = eb.channels
t0 = eb.t0
# init dataset
ChannelDataset.__init__(self,
samples=samples,
dt=dt, t0=t0, channelids=channelids,
**(kwargs))
__doc__ = enhancedDocString('EEPDataset', locals(), ChannelDataset)
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