cldx

Causal Loop Diagrams with networkx

installation

python setup.py install

Usage

from cldx import CausalLoopDiagram

cld = CausalLoopDiagram()
cld = CausalLoopDiagram()
cld.add_causal_links([
    ('Birth rate of Lynx',"Lynx population", 1),
    ('Death rate of Lynx',"Lynx population", -1),
    ("Lynx population", "Food supply of Lynx", -1),
    ("Starvation of Lynx", "Death rate of Lynx", 1),
    ("Food supply of Lynx", "Starvation of Lynx", 1),
    ("Food supply of Lynx", "Birth rate of Lynx", 1),
    ])
cld.draw(loops=loops)

You can also find loops in the diagram:

>>> cld.find_loops()
[{'nodes': ['Birth rate of Lynx', 'Lynx population', 'Food supply of Lynx'],
  'type': 'S'},
 {'nodes': ['Lynx population',
   'Food supply of Lynx',
   'Starvation of Lynx',
   'Death rate of Lynx'],
  'type': 'R'}]