def _dig6_to_matrix( dig6 ):
"""
Returns the matrix obtained from the dig6 and edge data.
INPUT:
- ``dig6`` -- a pair ``(dig6, edges)`` where ``dig6`` is a string encoding a digraph and ``edges`` is a dict or tuple encoding edges
EXAMPLES::
sage: from sage.combinat.cluster_algebra_quiver.mutation_class import _digraph_to_dig6, _dig6_to_matrix
sage: from sage.combinat.cluster_algebra_quiver.quiver import ClusterQuiver
sage: dg = ClusterQuiver(['A',4]).digraph()
sage: data = _digraph_to_dig6(dg)
sage: _dig6_to_matrix(data)
[ 0 1 0 0]
[-1 0 -1 0]
[ 0 1 0 1]
[ 0 0 -1 0]
"""
dg = _dig6_to_digraph( dig6 )
return _edge_list_to_matrix( dg.edges(), dg.order(), 0 )
def _dig6_to_matrix(dig6):
"""
Returns the matrix obtained from the dig6 and edge data.
INPUT:
- ``dig6`` -- a pair ``(dig6, edges)`` where ``dig6`` is a string encoding a digraph and ``edges`` is a dict or tuple encoding edges
EXAMPLES::
sage: from sage.combinat.cluster_algebra_quiver.mutation_class import _digraph_to_dig6, _dig6_to_matrix
sage: from sage.combinat.cluster_algebra_quiver.quiver import ClusterQuiver
sage: dg = ClusterQuiver(['A',4]).digraph()
sage: data = _digraph_to_dig6(dg)
sage: _dig6_to_matrix(data)
[ 0 1 0 0]
[-1 0 -1 0]
[ 0 1 0 1]
[ 0 0 -1 0]
"""
dg = _dig6_to_digraph(dig6)
return _edge_list_to_matrix(dg.edges(), dg.order(), 0)
