I am using Python to create a graph via pydot.Dot
.
When I want to write the graph to PNG, I use pydot.Dot.write_png(...)
.
Unfortunately, it fails at the stage of finding graphviz (in a function called find_graphviz
).
I tried installing it as a software but I don't see how it can be imported to Python.
How can I solve this problem?
Try manually adding the Graphviz\bin folder to your systems PATH.
>>> import pydot
>>> pydot.find_graphviz()
{'dot': 'C:\\Program Files (x86)\\Graphviz 2.28\\bin\\dot.exe'} #...
>>> print pydot.find_graphviz.__doc__
"""
Locate Graphviz's executables in the system.
Tries three methods:
First: Windows Registry (Windows only)
This requires Mark Hammond's pywin32 is installed.
Secondly: Search the path
It will look for 'dot', 'twopi' and 'neato' in all the directories
specified in the PATH environment variable.
Thirdly: Default install location (Windows only)
It will look for 'dot', 'twopi' and 'neato' in the default install
location under the "Program Files" directory.
It will return a dictionary containing the program names as keys
and their paths as values.
If this fails, it returns None.
"""