GazeBaseVR

class pymovements.datasets.GazeBaseVR(name: str = 'GazeBaseVR', long_name: str = 'GazeBaseVR dataset', mirrors: dict[str, Sequence[str]] = <factory>, resources: ResourceDefinitions = <factory>, experiment: Experiment = <factory>, extract: dict[str, bool] | None = None, custom_read_kwargs: dict[str, dict[str, Any]] = <factory>, column_map: dict[str, str] = <factory>, trial_columns: list[str] | None = None, time_column: str = 'n', time_unit: str = 'ms', pixel_columns: list[str] | None = None, position_columns: list[str] = <factory>, velocity_columns: list[str] | None = None, acceleration_columns: list[str] | None = None, distance_column: str | None = None, filename_format: dict[str, str] | None = None, filename_format_schema_overrides: dict[str, dict[str, type]] | None = None)

GazeBaseVR dataset [Lohr et al., 2023].

This dataset includes binocular plus an additional cyclopian eye tracking data from 407 participants captured over a 26-month period. Participants attended up to 3 rounds during this time frame, with each round consisting of two contiguous sessions.

Eye movements are recorded at a sampling frequency of 250 Hz a using SensoMotoric Instrument’s (SMI’s) tethered ET VR head-mounted display based on the HTC Vive (hereon called the ET-HMD) eye tracker and are provided as positional data in degrees of visual angle.

In each of the two sessions per round, participants are instructed to complete a series of tasks, a vergence task (VRG), a smooth pursuit task (PUR), a video viewing task (VID), a reading task (TEX), and a random saccade task (RAN).

Check the respective paper for details [Lohr et al., 2023].

name

The name of the dataset.

Type:

str

long_name

The entire name of the dataset.

Type:

str

resources

A list of dataset gaze_resources. Each list entry must be a dictionary with the following keys: - resource: The url suffix of the resource. This will be concatenated with the mirror. - filename: The filename under which the file is saved as. - md5: The MD5 checksum of the respective file.

Type:

ResourceDefinitions

experiment

The experiment definition.

Type:

Experiment

filename_format

Regular expression which will be matched before trying to load the file. Namedgroups will appear in the fileinfo dataframe.

Type:

dict[str, str] | None

filename_format_schema_overrides

If named groups are present in the filename_format, this makes it possible to cast specific named groups to a particular datatype.

Type:

dict[str, dict[str, type]] | None

time_column

The name of the timestamp column in the input data frame. This column will be renamed to time.

Type:

str

time_unit

The unit of the timestamps in the timestamp column in the input data frame. Supported units are ‘s’ for seconds, ‘ms’ for milliseconds and ‘step’ for steps. If the unit is ‘step’ the experiment definition must be specified. All timestamps will be converted to milliseconds.

Type:

str

position_columns

The name of the dva position columns in the input data frame. These columns will be nested into the column position. If the list is empty or None, the nested position column will not be created.

Type:

list[str]

column_map

The keys are the columns to read, the values are the names to which they should be renamed.

Type:

dict[str, str]

custom_read_kwargs

If specified, these keyword arguments will be passed to the file reading function.

Type:

dict[str, dict[str, Any]]

Examples

Initialize your Dataset object with the GazeBaseVR definition:

>>> import pymovements as pm
>>>
>>> dataset = pm.Dataset("GazeBaseVR", path='data/GazeBaseVR')

Download the dataset resources:

>>> dataset.download()

Load the data into memory:

>>> dataset.load()

Methods

__init__([name, long_name, mirrors, ...])
from_yaml(path)	Load a dataset definition from a YAML file.
to_dict(*[, exclude_private, exclude_none])	Return dictionary representation.
to_yaml(path, *[, exclude_private, exclude_none])	Save a dataset definition to a YAML file.

Attributes

acceleration_columns
distance_column
extract
filename_format
filename_format_schema_overrides
has_resources	Checks for resources in resources.
long_name
name
pixel_columns
position_columns
time_column
time_unit
trial_columns
velocity_columns
resources
experiment
column_map
custom_read_kwargs
mirrors