EpochTable Hello World

epoch_hello_world.py

from pynwb import NWBFile, NWBHDF5IO, TimeSeries
from pynwb.epoch import Epochs
import os
import pandas as pd
import datetime

nwbfile = NWBFile(
    source='Data source',
    session_description='test',
    identifier='test',
    session_start_time=datetime.datetime.now(),
    file_create_date=datetime.datetime.now()
)

stimulus_table = pd.DataFrame({'start_time':[0.,1.,2.], 'end_time':[1.,2.,3.], 'example_metadata':['a', 'b', 'c']})

nwbfile.add_epoch_metadata_column(name='example_metadata', description='what do this column\'s values mean?')

for _, row_series in stimulus_table.iterrows():
    row = row_series.to_dict()
    start_time = row.pop('start_time')
    stop_time = row.pop('end_time')

    nwbfile.create_epoch(start_time=start_time,
                        stop_time=stop_time,
                        timeseries=[],
                        tags='stimulus',
                        description='Stimulus Presentation Epoch',
                        metadata=row)

print nwbfile.epochs.metadata.columns[0].data