def low_connectivity_nodes(self, impedance, count, imp_name=None):
<EOL>self.set(self.node_ids.to_series(), name='<STR_LIT>')<EOL>agg = self.aggregate(<EOL>impedance, type='<STR_LIT:count>', imp_name=imp_name, name='<STR_LIT>')<EOL>return np.array(agg[agg < count].index)<EOL>
Identify nodes that are connected to fewer than some threshold
of other nodes within a given distance.

Parameters
----------
impedance : float
    Distance within which to search for other connected nodes. This
    will usually be a distance unit in meters however if you have
    customized the impedance this could be in other units such as
    utility or time etc.
count : int
    Threshold for connectivity. If a node is connected to fewer
    than this many nodes within `impedance` it will be identified
    as "low connectivity".
imp_name : string, optional
    The impedance name to use for the aggregation on this network.
    Must be one of the impedance names passed in the constructor of
    this object.  If not specified, there must be only one impedance
    passed in the constructor, which will be used.

Returns
-------
node_ids : array
    List of "low connectivity" node IDs.