mvpa2.misc.support.MapOverlap

class mvpa2.misc.support.MapOverlap(overlap_threshold=1.0)

Compute some overlap stats from a sequence of binary maps.

When called with a sequence of binary maps (e.g. lists or arrays) the fraction of mask elements that are non-zero in a customizable proportion of the maps is returned. By default this threshold is set to 1.0, i.e. such an element has to be non-zero in all maps.

Three additional maps (same size as original) are computed:

• overlap_map: binary map which is non-zero for each overlapping element.

• spread_map: binary map which is non-zero for each element that is

  non-zero in any map, but does not exceed the overlap threshold.

• ovstats_map: map of float with the raw elementwise fraction of overlap.

All maps are available via class members.

Nothing to be seen here.