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mvpa2.mappers.fx.sum_sample

mvpa2.mappers.fx.sum_sample(attrfx='merge')

Returns a mapper that computes the sum sample of a dataset.

Parameters :

attrfx : ‘merge’ or callable, optional

Callable that is used to determine the sample attributes of the computed sum 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. :