elephant.asset.asset.synchronous_events_difference¶

elephant.asset.asset.
synchronous_events_difference
(sse1, sse2, difference='linkwise')[source]¶ Given two sequences of synchronous events (SSEs) sse1 and sse2, each consisting of a pool of pixel positions and associated synchronous events (see below), computes the difference between sse1 and sse2.
The difference can be performed ‘pixelwise’ or ‘linkwise’:
 if ‘pixelwise’, it yields a new SSE which contains all (and only) the events in sse1 whose pixel position doesn’t match any pixel in sse2.
 if ‘linkwise’, for each pixel (i, j) in sse1 and corresponding synchronous event S1, if (i, j) is a pixel in sse2 corresponding to the event S2, it retains the set difference S1  S2. If (i, j) is not a pixel in sse2, it retains the full set S1.
Note that in either case the difference is a nonsymmetric operation: intersection(sse1, sse2) != intersection(sse2, sse1).
Both sse1 and sse2 must be provided as dictionaries of the type
{(i1, j1): S1, (i2, j2): S2, …, (iK, jK): SK},
where each i, j is an integer and each S is a set of neuron IDs.
Parameters:  sse1, sse2dict
Dictionaries of pixel positions (i, j) as keys and sets S of synchronous events as values (see above).
 difference{‘pixelwise’, ‘linkwise’}, optional
The type of difference to perform between sse1 and sse2 (see above). Default: ‘linkwise’
Returns:  sse_newdict
A new SSE (same structure as sse1 and sse2) which retains the difference between sse1 and sse2.
See also
ASSET.extract_synchronous_events
 extract SSEs from given spike trains