Changed implementation of WeightedRips to store simplex values (max distance between simplices' vertices) as an invisible layer on top of each simplex object, so that the data() field of WeightedRips has been freed for use by the users again.
:class:`Filtration` class
=========================
.. class:: Filtration
This class serves as a bridge between a complex represented as a
lexicographically sorted list of simplices, and the
:class:`StaticPersistence` class which needs to know the order in which the
simplices appear in the filtration.
.. method:: __init__(simplices, cmp)
Initializes :class:`Filtration` by internally arranging the indices of
the elements in the list `simplices` in the order sorted with respect to
`cmp`.
.. method:: __getitem__()
Random access to the elements of the filtration.
.. method:: __iter__()
Iterator over the elements of the filtration, which are simply the
indices of the simplices in the original list `lst` sorted with respect
to the comparison `cmp`. E.g.::
simplices = [Simplex([0], 2), ..., Simplex([3,4,5], 3.5)]
f = Filtration(simplices, data_dim_cmp)
for i in f: print simplices[i]
.. method:: __len__()
Size of the filtration.