I observe strange results from using constructs like vectorize(vectorize(M)), where M is a matrix which elements are matrices.
Could someone explain the logic? Or is this a bug?



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Mike,

Your M matrix is a collection of items. Mathematica defines as 'cell array'
Matlab defines MDA [Multi Dimensional Array]
The vectorie operator must have at least two arguments to produce.
You are attempting to vectorise M over itself, a non sense in some way.
Try to multiply M*N, where 'N' will be of similar construct of different
values and put that under the vectorise operator. You should get result.

Jean