Dot graph import problems about dowhy HOT 4 CLOSED

Thanks @adamhaber-atidot for raising this. This error is related to how the code uses pygraphviz or pydot to load a graph file. I have fixed this now and included support for dot files using either pydot or pygraphviz.
The library also supports the gml format (less error-prone).

Hope this works on the latest commit. Let me know if you face any problems.

from dowhy.

I've updated to the latest commit and got the same error message. Also tried feeding the output of pydot's .to_string() as an argument and it didn't work.

Additional information that might be relevant - this is the graph representation I use for testing:

digraph G [Z -> X;Z -> Y;X -> Y;]

Any other debugging information that might be useful?

from dowhy.

Ah, most probably the error is that you are providing the series data in the (outcome, treatment) parameters, while code only requires the name of the columns. So instead, try:
model=CausalModel(data=df, outcome='Y', treatment='X', graph="graph.dot")

Another problem could be in the dot file syntax. Your snippet uses square brackets [] instead of curly braces {} in your dot file. This one is the correct dot format:
digraph G {Z->X; Z->Y; X->Y}

Hopefully this should solve the problem.

from dowhy.

Thanks! That did the trick.

from dowhy.