pygraphviz

I have some dot files (digraphs) that I need to read in Python and extract some values from the nodes to populate my data structure. I see there are two graphviz packages for Python: graphviz and pygraphviz . Is there any big difference between the two? From a quick scroll of the docs, they pretty much seem to do the same thing. I'll be using this in Python 2.7.X for the aforementioned task. graphviz is lightweight library which calls graphviz as subprocess to execute all actions and produce output. This library is great for quick and easy producing SVG or PNG output. pygraphviz is complete C

I am trying to use pygraphviz and networkx in python (v 2.7) to create a network map. I found a script that looks very useful on stackoverflow: import networkx as nx import numpy as np import string import pygraphviz dt = [('len', float)] A = np.array([(0, 0.3, 0.4, 0.7), (0.3, 0, 0.9, 0.2), (0.4, 0.9, 0, 0.1), (0.7, 0.2, 0.1, 0) ])*10 A = A.view(dt) G = nx.from_numpy_matrix(A) G = nx.relabel_nodes(G, dict(zip(range(len(G.nodes())),string.ascii_uppercase))) G = nx.to_agraph(G) G.node_attr.update(color="red", style="filled") G.edge_attr.update(color="blue", width="2.0") G.draw('/tmp/out.png',

I succeed in installing graphviz and cgraph with $ sudo pip install graphviz .... Successfully installed graphviz-0.5.1 $ sudo pip install cgraph ... Successfully installed cgraph-0.1 I encounter the issue No package 'libcgraph' found while running sudo pip install pygraphviz . Below is the full stacktrace. $ sudo pip install pygraphviz The directory '/Users/sparkandshine/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H

This question already has an answer here: (Python) ValueError: Program dot not found in path 4 answers the problem is: I am on Windows7 and I've installed pygraphviz library and Graphviz application(Graphviz application is in "C:\Program Files"). When I run my program on python I have the following message: g.draw(filename,prog='dot') File "C:\Python27\lib\site-packages\pygraphviz\agraph.py", line 1418, in draw data=self._run_prog(prog,args) File "C:\Python27\lib\site-packages\pygraphviz\agraph.py", line 1248, in _run_prog runprog=self._get_prog(prog) File "C:\Python27\lib\site-packages

I've achieved the following plot with a combination networkx and graphviz: I'm very happy with the result. In the plot you can identify what I call aggregation nodes: those are the latest green ones (where all the green nodes converge) one hop before the orange ones. What I'd like to achieve is the following: 1) Put labels on the sides of the nodes. As you can see, the labels are over them and it's difficult to read; 2) Only show labels on the aggregation nodes and the orange ones. This is how I get to plot the diagram. # We create the graph G = nx.DiGraph() # We add nodes and edges G.add

I already referred to link , but still facing issues :( I successfully installed graphviz on my windows 7. Now i would like to install pygraphviz. I downloaded the pygraphviz zip file and unzipped it. I modified setup.py and added below text. # Windows library_path='c:/Program Files (x86)/Graphviz2.36/lib/release/lib' include_path='C:/Program Files (x86)/Graphviz2.36/include/graphviz' I also modified unixcompiler.py. I removed the line compiler = os.path.basename(sysconfig.get_config_var("CC")) and instead of it I wrote compiler = 'gcc' when i try to install pygraphviz i get below error :( C: