mvpa2.mappers.fx.mean_group_sample

mvpa2.mappers.fx.mean_group_sample(attrs, attrfx='merge')

Returns a mapper that computes the mean samples of unique sample groups.

The sample groups are identified by the unique combination of all values of a set of provided sample attributes.

Parameters :

attrs : list

List of sample attributes whose unique values will be used to identify the samples groups.

attrfx : ‘merge’ or callable, optional

Callable that is used to determine the sample attributes of the computed mean samples. By default this will be a string representation of all unique value of a particular attribute in any sample group. If there is only a single value in a group it will be used as the new attribute value.

Returns :

FxMapper instance. :