def printQueriedEventsDemo():
# Create an instance of the ExperimentDataAccessUtility class
# for the selected DataStore file. This allows us to access data
# in the file based on Device Event names and attributes.
#
experiment_data = ExperimentDataAccessUtility('..\hdf5_files',
'events.hdf5')
# Retrieve the 'time','device_time','event_id','delay','category','text'
# attributes from the Message Event table, where the event time is between
# the associated trials condition variables TRIAL_START and TRIAL_END
# value.
# i.e. only get message events sent during each trial of the eperiment, not any
# sent between trials.
#
event_results = experiment_data.getEventAttributeValues(
EventConstants.MESSAGE,
['time', 'device_time', 'event_id', 'delay', 'category', 'text'],
conditionVariablesFilter=None,
startConditions={'time': ('>=', '@TRIAL_START@')},
endConditions={'time': ('<=', '@TRIAL_END@')})
for trial_events in event_results:
print '==== TRIAL DATA START ======='
print "Trial Condition Values:"
for ck, cv in trial_events.condition_set._asdict().iteritems():
print "\t{ck} : {cv}".format(ck=ck, cv=cv)
print
trial_events.query_string
print "Trial Query String:\t"
print trial_events.query_string
print
event_value_arrays = [
(cv_name, cv_value)
for cv_name, cv_value in trial_events._asdict().iteritems()
if cv_name not in ('query_string', 'condition_set')
]
print "Trial Event Field Data:"
for field_name, field_data in event_value_arrays:
print "\t" + field_name + ': ' + str(field_data)
print
print '===== TRIAL DATA END ========'
experiment_data.close()
def printQueriedEventsDemo():
# Create an instance of the ExperimentDataAccessUtility class
# for the selected DataStore file. This allows us to access data
# in the file based on Device Event names and attributes.
#
experiment_data=ExperimentDataAccessUtility('..\hdf5_files' , 'events.hdf5')
# Retrieve the 'time','device_time','event_id','delay','category','text'
# attributes from the Message Event table, where the event time is between
# the associated trials condition variables TRIAL_START and TRIAL_END
# value.
# i.e. only get message events sent during each trial of the eperiment, not any
# sent between trials.
#
event_results=experiment_data.getEventAttributeValues(EventConstants.MESSAGE,
['time','device_time','event_id','delay','category','text'],
conditionVariablesFilter=None,
startConditions={'time':('>=','@TRIAL_START@')},
endConditions={'time':('<=','@TRIAL_END@')})
for trial_events in event_results:
print '==== TRIAL DATA START ======='
print "Trial Condition Values:"
for ck,cv in trial_events.condition_set._asdict().iteritems():
print "\t{ck} : {cv}".format(ck=ck,cv=cv)
print
trial_events.query_string
print "Trial Query String:\t"
print trial_events.query_string
print
event_value_arrays=[(cv_name,cv_value) for cv_name,cv_value in trial_events._asdict().iteritems() if cv_name not in ('query_string','condition_set')]
print "Trial Event Field Data:"
for field_name,field_data in event_value_arrays:
print "\t"+field_name+': '+str(field_data)
print
print '===== TRIAL DATA END ========'
experiment_data.close()
def createTrialDataStreams():
trial_data_streams=[]
# Get the filtered event data.
# We will use right eye data only for the testing..
#
dataAccessUtil=ExperimentDataAccessUtility('../hdf5_files','remote_data.hdf5',
experimentCode=None,sessionCodes=[])
event_type=EventConstants.BINOCULAR_EYE_SAMPLE
retrieve_attributes=('time','right_gaze_x','right_gaze_y','right_pupil_measure1','status')
trial_event_data=dataAccessUtil.getEventAttributeValues(event_type,
retrieve_attributes,
conditionVariablesFilter=None,
startConditions={'time':('>=','@TRIAL_START@')},
endConditions={'time':('<=','@TRIAL_END@')},
)
dataAccessUtil.close()
for t,trial_data in enumerate(trial_event_data):
#Create a mask to be used to define periods of missing data in a data trace (eye tracker dependent)
#
invalid_data_mask=trial_data.status%10>=2
time=trial_data.time
pupil=trial_data.right_pupil_measure1
# Get x, y eye position traces (in pixels), setting sample positions where there is track loss
# to NaN.
xpix_cleared=trial_data.right_gaze_x.copy()
ypix_cleared=trial_data.right_gaze_y.copy()
processSampleEventGaps(xpix_cleared,ypix_cleared,pupil,invalid_data_mask,'clear')
# Get x, y eye position traces (in pixels), setting sample positions
# where there is track loss to be linearly interpolated using each
# missing_sample_start-1 and missing_sample_end+1 as the points to
# interpolate between.
#
xpix_linear=trial_data.right_gaze_x.copy()
ypix_linear=trial_data.right_gaze_y.copy()
# valid_data_periods is a list of array slice objects giving the start,end index of each non missing
# period of in the data stream.
#
valid_data_periods=processSampleEventGaps(xpix_linear,ypix_linear,pupil,invalid_data_mask,'linear')
# Convert from pixels to visual angle coordinates
calibration_area_info=dict(display_size_mm=(340,280.0),
display_res_pix=(1280.0,1024.0),
eye_distance_mm=590.0)
vac=VisualAngleCalc(**calibration_area_info)
xdeg,ydeg=vac.pix2deg(xpix_linear,ypix_linear)
# Create Filtered versions of the x and y degree data traces
# We'll use the Median Filter...
#
xdeg_filtered = scipy.signal.medfilt(xdeg,SPATIAL_FILTER_WINDOW_SIZE)
ydeg_filtered = scipy.signal.medfilt(ydeg,SPATIAL_FILTER_WINDOW_SIZE)
# Create the velocity stream
#
xvel=calculateVelocity(time,xdeg_filtered)
yvel=calculateVelocity(time,ydeg_filtered)
# Filter the velocity data
#
FILTER_ORDER=2
Wn=0.3
b, a = scipy.signal.butter(FILTER_ORDER, Wn, 'low')
ffunc=scipy.signal.filtfilt
xvel_filtered = ffunc(b, a, xvel)
yvel_filtered = ffunc(b, a, yvel)
# xvel_filtered=savitzky_golay(xvel,window_size=VELOCITY_FILTER_WINDOW_SIZE,order=2)
# yvel_filtered=savitzky_golay(yvel,window_size=VELOCITY_FILTER_WINDOW_SIZE,order=2)
# xvel_filtered=gaussian_filter1d(xvel,VELOCITY_FILTER_WINDOW_SIZE)
# yvel_filtered=gaussian_filter1d(yvel,VELOCITY_FILTER_WINDOW_SIZE)
# xvel_filtered=scipy.signal.medfilt(xvel,VELOCITY_FILTER_WINDOW_SIZE)
# yvel_filtered=scipy.signal.medfilt(yvel,VELOCITY_FILTER_WINDOW_SIZE)
velocity=np.sqrt(xvel*xvel+yvel*yvel)
velocity_filtered=np.sqrt(xvel_filtered*xvel_filtered+yvel_filtered*yvel_filtered)
# Create a data trace dictionary for all the different types
# of data traces created for the trial
#
trial_data={}
trial_data['time']=time
trial_data['xpix_cleared']=xpix_cleared
trial_data['ypix_cleared']=ypix_cleared
trial_data['xpix_linear']=xpix_linear
trial_data['xpix_linear']=xpix_linear
trial_data['xdeg']=xdeg
trial_data['ydeg']=ydeg
trial_data['xdeg_filtered']=xdeg_filtered
trial_data['ydeg_filtered']=ydeg_filtered
trial_data['pupil']=pupil
trial_data['velocity']=velocity
trial_data['velocity_filtered']=velocity_filtered
trial_data['valid_data_periods']=valid_data_periods
trial_data['missing_data_mask']=invalid_data_mask
# Add the data trace dictionary to a list
#
trial_data_streams.append(trial_data)
return trial_data_streams
experimentCode=None,
sessionCodes=[])
##### STEP A. #####
# Retrieve a subset of the BINOCULAR_EYE_SAMPLE event attributes, for events that occurred
# between each time period defined by the TRIAL_START and TRIAL_END trial variables of each entry
# in the trial_conditions data table.
#
event_type = EventConstants.BINOCULAR_EYE_SAMPLE
retrieve_attributes = ('time', 'left_gaze_x', 'left_gaze_y',
'left_pupil_measure1', 'right_gaze_x', 'right_gaze_y',
'right_pupil_measure1', 'status')
trial_event_data = dataAccessUtil.getEventAttributeValues(
event_type,
retrieve_attributes,
conditionVariablesFilter=None,
startConditions={'time': ('>=', '@TRIAL_START@')},
endConditions={'time': ('<=', '@TRIAL_END@')},
)
# No need to keep the hdf5 file open anymore...
#
dataAccessUtil.close()
# Process and plot the sample data for each trial in the data file.
#
for trial_index, trial_samples in enumerate(trial_event_data):
##### STEP B. #####
# Find all samples that have missing eye position data and filter the eye position
# and pupil size streams so that the eye track plot is more useful. In this case that
# means setting position fields to NaN and pupil size to 0.
if __name__ == '__main__':
# Select the hdf5 file to process.
data_file_path = displayDataFileSelectionDialog(
os.path.dirname(os.path.abspath(__file__)))
if data_file_path is None:
print("File Selection Cancelled, exiting...")
sys.exit(0)
data_file_path = data_file_path[0]
dpath, dfile = os.path.split(data_file_path)
datafile = ExperimentDataAccessUtility(dpath, dfile)
events_by_trial = datafile.getEventAttributeValues(
SAVE_EVENT_TYPE,
SAVE_EVENT_FIELDS,
startConditions={'time': ('>=', '@TRIAL_START@')},
endConditions={'time': ('<=', '@TRIAL_END@')})
ecount = 0
# Open a file to save the tab delimited output to.
#
output_file_name = "%s.txt" % (dfile[:-5])
with open(output_file_name, 'w') as output_file:
print('Writing Data to %s:\n' % (output_file_name))
column_names = events_by_trial[0].condition_set._fields[
2:] + events_by_trial[0]._fields[:-2]
output_file.write('\t'.join(column_names))
output_file.write('\n')
# between each time period defined by the TRIAL_START and TRIAL_END trial variables of each entry
# in the trial_conditions data table.
#
# Load an ioDataStore file containing 120 Hz sample data from a
# remote eye tracker that was recording both eyes. In the plotting example
#
dataAccessUtil=ExperimentDataAccessUtility('../hdf5_files','remote_data.hdf5',
experimentCode=None,sessionCodes=[])
# Get the filtered event data.
#
event_type=EventConstants.BINOCULAR_EYE_SAMPLE
retrieve_attributes=('time','left_gaze_x','left_gaze_y','left_pupil_measure1',
'right_gaze_x','right_gaze_y','right_pupil_measure1','status')
trial_event_data=dataAccessUtil.getEventAttributeValues(event_type,
retrieve_attributes,
conditionVariablesFilter=None,
startConditions={'time':('>=','@TRIAL_START@')},
endConditions={'time':('<=','@TRIAL_END@')},
)
trial_data=trial_event_data[TRIAL_INDEX]
time=trial_data.time
status=trial_data.status
if USE_RIGHT_EYE:
pix_x=trial_data.right_gaze_x
pix_y=trial_data.right_gaze_y
pupil=trial_data.right_pupil_measure1
invalid_data_mask=trial_data.status%10>=2
else:
pix_x=trial_data.left_gaze_x
def createTrialDataStreams():
trial_data_streams = []
# Get the filtered event data.
# We will use right eye data only for the testing..
#
dataAccessUtil = ExperimentDataAccessUtility(
"../hdf5_files", "remote_data.hdf5", experimentCode=None, sessionCodes=[]
)
event_type = EventConstants.BINOCULAR_EYE_SAMPLE
retrieve_attributes = ("time", "right_gaze_x", "right_gaze_y", "right_pupil_measure1", "status")
trial_event_data = dataAccessUtil.getEventAttributeValues(
event_type,
retrieve_attributes,
conditionVariablesFilter=None,
startConditions={"time": (">=", "@TRIAL_START@")},
endConditions={"time": ("<=", "@TRIAL_END@")},
)
dataAccessUtil.close()
for t, trial_data in enumerate(trial_event_data):
# Create a mask to be used to define periods of missing data in a data trace (eye tracker dependent)
#
invalid_data_mask = trial_data.status % 10 >= 2
time = trial_data.time
pupil = trial_data.right_pupil_measure1
# Get x, y eye position traces (in pixels), setting sample positions where there is track loss
# to NaN.
xpix_cleared = trial_data.right_gaze_x.copy()
ypix_cleared = trial_data.right_gaze_y.copy()
processSampleEventGaps(xpix_cleared, ypix_cleared, pupil, invalid_data_mask, "clear")
# Get x, y eye position traces (in pixels), setting sample positions
# where there is track loss to be linearly interpolated using each
# missing_sample_start-1 and missing_sample_end+1 as the points to
# interpolate between.
#
xpix_linear = trial_data.right_gaze_x.copy()
ypix_linear = trial_data.right_gaze_y.copy()
# valid_data_periods is a list of array slice objects giving the start,end index of each non missing
# period of in the data stream.
#
valid_data_periods = processSampleEventGaps(xpix_linear, ypix_linear, pupil, invalid_data_mask, "linear")
# Convert from pixels to visual angle coordinates
calibration_area_info = dict(
display_size_mm=(340, 280.0), display_res_pix=(1280.0, 1024.0), eye_distance_mm=590.0
)
vac = VisualAngleCalc(**calibration_area_info)
xdeg, ydeg = vac.pix2deg(xpix_linear, ypix_linear)
# Create Filtered versions of the x and y degree data traces
# We'll use the Median Filter...
#
xdeg_filtered = scipy.signal.medfilt(xdeg, SPATIAL_FILTER_WINDOW_SIZE)
ydeg_filtered = scipy.signal.medfilt(ydeg, SPATIAL_FILTER_WINDOW_SIZE)
# Create the velocity stream
#
xvel = calculateVelocity(time, xdeg_filtered)
yvel = calculateVelocity(time, ydeg_filtered)
# Filter the velocity data
#
FILTER_ORDER = 2
Wn = 0.3
b, a = scipy.signal.butter(FILTER_ORDER, Wn, "low")
ffunc = scipy.signal.filtfilt
xvel_filtered = ffunc(b, a, xvel)
yvel_filtered = ffunc(b, a, yvel)
# xvel_filtered=savitzky_golay(xvel,window_size=VELOCITY_FILTER_WINDOW_SIZE,order=2)
# yvel_filtered=savitzky_golay(yvel,window_size=VELOCITY_FILTER_WINDOW_SIZE,order=2)
# xvel_filtered=gaussian_filter1d(xvel,VELOCITY_FILTER_WINDOW_SIZE)
# yvel_filtered=gaussian_filter1d(yvel,VELOCITY_FILTER_WINDOW_SIZE)
# xvel_filtered=scipy.signal.medfilt(xvel,VELOCITY_FILTER_WINDOW_SIZE)
# yvel_filtered=scipy.signal.medfilt(yvel,VELOCITY_FILTER_WINDOW_SIZE)
velocity = np.sqrt(xvel * xvel + yvel * yvel)
velocity_filtered = np.sqrt(xvel_filtered * xvel_filtered + yvel_filtered * yvel_filtered)
# Create a data trace dictionary for all the different types
# of data traces created for the trial
#
trial_data = {}
trial_data["time"] = time
trial_data["xpix_cleared"] = xpix_cleared
trial_data["ypix_cleared"] = ypix_cleared
trial_data["xpix_linear"] = xpix_linear
trial_data["xpix_linear"] = xpix_linear
trial_data["xdeg"] = xdeg
trial_data["ydeg"] = ydeg
trial_data["xdeg_filtered"] = xdeg_filtered
trial_data["ydeg_filtered"] = ydeg_filtered
trial_data["pupil"] = pupil
trial_data["velocity"] = velocity
trial_data["velocity_filtered"] = velocity_filtered
trial_data["valid_data_periods"] = valid_data_periods
trial_data["missing_data_mask"] = invalid_data_mask
# Add the data trace dictionary to a list
#
trial_data_streams.append(trial_data)
return trial_data_streams
