Package psychopy :: Module data :: Class DataHandler

Class DataHandler

For handling data (used by TrialHandler, principally, rather than by users directly)

Numeric data are stored as numpy masked arrays where the mask is set True for missing entries. When any non-numeric data (string, list or array) get inserted using DataHandler.add(val) the array is converted to a standard (not masked) numpy array with dtype='O' and where missing entries have value="--"

Attributes:

['key']=data arrays containing values for that key

(e.g. data['accuracy']=...)
dataShape=shape of data (x,y,...z,nReps)
dataTypes=list of keys as strings

Instance Methods

new empty dictionary

__init__(self, dataTypes=None, trials=None, dataShape=None)
x.__init__(...) initializes x; see x.__class__.__doc__ for signature

source code

addDataType(self, names, shape=None)
Add a new key to the data dictionary of particular shape if specified (otherwise the shape of the trial matrix in the trial handler.

source code

add(self, thisType, value, position=None)
Add data to an existing data type (and add a new one if necess)

source code

Inherited from dict: __cmp__, __contains__, __delitem__, __eq__, __ge__, __getattribute__, __getitem__, __gt__, __hash__, __iter__, __le__, __len__, __lt__, __ne__, __new__, __repr__, __setitem__, clear, copy, fromkeys, get, has_key, items, iteritems, iterkeys, itervalues, keys, pop, popitem, setdefault, update, values

Inherited from object: __delattr__, __reduce__, __reduce_ex__, __setattr__, __str__

Properties
Inherited from `object`: `__class__`

Method Details

init(self, dataTypes=None, trials=None, dataShape=None)
(Constructor)

source code

x.__init__(...) initializes x; see x.__class__.__doc__ for signature

Returns: new empty dictionary
Overrides: object.__init__: (inherited documentation)

addDataType(self, names, shape=None)

source code

Add a new key to the data dictionary of particular shape if specified (otherwise the shape of the trial matrix in the trial handler. Data are initialised to be zero everywhere. Not needed by user: appropriate types will be added during initialisation and as each xtra type is needed.

Class DataHandler

__init__(self, dataTypes=None, trials=None, dataShape=None) (Constructor)

addDataType(self, names, shape=None)

init(self, dataTypes=None, trials=None, dataShape=None)
(Constructor)