Hi Tiago, thank you for the response! I've tried what you said, but I'm still a little stuck. I don't know how to incorporate the group numbers of ng into the loop and associate them with the vertices of g, so all I end up with currently is a dictionary of vertices (and their labels) in the largest component. Here's the code I have. Any help would be greatly appreciated!

import graph_tool.all as gt, collections from pylab import *

g=gt.load_graph("network.xml")

name = g.vertex_properties['_graphml_vertex_id'] g = gt.GraphView(g, vfilt=gt.label_largest_component(g)) spins = gt.community_structure(g, 1000, 100) ng = gt.condensation_graph(g, spins) gt.graphviz_draw(ng[0], overlap=False, output="network.pdf")

groups = collections.defaultdict(list) for v in g.vertices(): groups[name[v]].append(v)

for a,b in groups.iteritems(): print a,b

On Sat, Aug 11, 2012 at 9:28 PM, Tiago Peixoto [via Main discussion list for the graph-tool project] ml-node+s982480n4024769h81@n3.nabble.comwrote:

Hi,

On 08/11/2012 02:53 PM, mstcamus wrote:

...

Is it possible to show the members of the communities shown in the

http://projects.skewed.de/graph-tool/doc/community.html#graph_tool.community...

...

condensation graph documentation. For example, I have a graph in

GraphML

...

that I import with the vertex property "_graphml_vertex_id", from which

I

...

follow the rest of the example posted in the documentation to produce a condensation graph.

However, I want to see which vertices end up being grouped together. How would one go about reversing the condensation graph to see the

groupings? I

...

apologise if my question is silly, I'm still very new to graph-tool,

which I

...

think is a remarkable piece of work (thank you!).

All you have to do is search for vertices with a specific value of the property map. You can do this by looping:

groups = defaultdict(list)
for v in g.vertices():
    groups[vertex_id[v]].append(v)

# now 'groups' is a dictionary with all the vertices for each group

You can also search for individual groups by using the find_vertex() function:

http://projects.skewed.de/graph-tool/doc/util.html#graph_tool.util.find_vert...

I hope it helps.

Cheers, Tiago

-- Tiago de Paula Peixoto <[hidden email]http://user/SendEmail.jtp?type=node&node=4024769&i=0>

---

graph-tool mailing list [hidden email] http://user/SendEmail.jtp?type=node&node=4024769&i=1 http://lists.skewed.de/mailman/listinfo/graph-tool

*signature.asc* (566 bytes) Download Attachmenthttp://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/attachment/4024769/0/signature.asc

Tiago de Paula Peixoto tiago@skewed.de

---

If you reply to this email, your message will be added to the discussion below:

http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/... To unsubscribe from Show Members of Community Condensation Graph, click herehttp://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=4024768&code=bnVsbHVzYWRpbmZpbml0dW1AZ21haWwuY29tfDQwMjQ3Njh8MTA1ODQ5NTA1MA== . NAMLhttp://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml

-- View this message in context: http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/... Sent from the Main discussion list for the graph-tool project mailing list archive at Nabble.com.

That fixed it! Thanks so much. Sorry about being noob, but I'm learning a lot. Hopefully my question can help other newcomers. I think this is definitely the best network analysis library around; it's so well-documented, and I hope to contribute to the graph-tool community in whatever way I can as soon as I understand it better. You should be very proud of your work. :)

On Sun, Aug 12, 2012 at 12:03 AM, Tiago Peixoto [via Main discussion list for the graph-tool project] ml-node+s982480n4024771h43@n3.nabble.comwrote:

On 08/11/2012 05:01 PM, mstcamus wrote:

...

groups = collections.defaultdict(list) for v in g.vertices(): groups[name[v]].append(v)

Here you have to use the same property as you used to build the condensation graph, which in your case is "spins", instead of "name".

Cheers, Tiago

-- Tiago de Paula Peixoto <[hidden email]http://user/SendEmail.jtp?type=node&node=4024771&i=0>

---

graph-tool mailing list [hidden email] http://user/SendEmail.jtp?type=node&node=4024771&i=1 http://lists.skewed.de/mailman/listinfo/graph-tool

*signature.asc* (566 bytes) Download Attachmenthttp://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/attachment/4024771/0/signature.asc

Tiago de Paula Peixoto tiago@skewed.de

---

If you reply to this email, your message will be added to the discussion below:

http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/... To unsubscribe from Show Members of Community Condensation Graph, click herehttp://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=4024768&code=bnVsbHVzYWRpbmZpbml0dW1AZ21haWwuY29tfDQwMjQ3Njh8MTA1ODQ5NTA1MA== . NAMLhttp://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml

-- View this message in context: http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/... Sent from the Main discussion list for the graph-tool project mailing list archive at Nabble.com.