Hi Csongor, I actually can do that. And when building the state and drawing it I use the name label, so the problem really is how to map the information I originally have to the levels and states I get from the NestedBlockModel. The model is very interesting, I am still reading about it and is not bad to check it out in case yo ever get a network like those in the examples: http://arxiv.org/pdf/1310.4377.pdf ​Thanks for the answer! ____ *Rogelio Basurto Flores* Laboratorio de Sistemas Complejos *​Unidad Profesional Interdisciplinaria en Ingeniería y * *Tecnologías Avanzadas,* *Instituto Politécnico Nacional,* *Av. IPN # 2580, Col. Laguna Ticoman,* *Mexico D. F., 07340, Mexico* *Mobile Phone: 33 1551 3665* *E-Mail: rogelio.basurto@gmail.com <rogelio.basurto@gmail.com>* On Fri, May 27, 2016 at 5:00 AM, <graph-tool-request@skewed.de> wrote:

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Today's Topics:

1. Re: About the blocks from the minimize_nested_blockmodel_dl (Matyas, Csongor)

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Message: 1 Date: Thu, 26 May 2016 15:23:38 -0230 From: "Matyas, Csongor" <cfm482@mun.ca> To: Main discussion list for the graph-tool project <graph-tool@skewed.de> Subject: Re: [graph-tool] About the blocks from the minimize_nested_blockmodel_dl Message-ID: < CAHCsTsazu6bhZRUAv5HgCvQj0FhYnaN1JGNZ2TdAwYLi1_dZbw@mail.gmail.com> Content-Type: text/plain; charset="utf-8"

Hi Rogelio

I'm just another user of graph tool, and I'm not familiar with the function that you've mentioned, but I can tell you how I do my naming.

I create a vertex property map for my vertices and add a string value to each vertex which is going to be their name (the vertex number as integer transformed into a string). Now if I remove a vertex, or something changes, the property map will stay with the vertices and I can call them. If the function you are talking about will generate a new graph, I don't know how to solve that, but if you make your graph to be simplified to that graph, you will have the names. I'm sure there is an easier way, but I will leave that to the experts :)

Good luck

Csongor

On Wed, May 25, 2016 at 11:52 PM, Rogelio Basurto < rogelio.basurto@gmail.com

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wrote:

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Hello,

I've been using graph tool for about 3 weeks now. I just ran into it while searching for a modularity method for a bipartite network.

I am amazed by graph tool and the algorithms within. But I am having truble with a basic question (at least I think it is).

I am reading a bipartite network from a graphml file, then I do some filtering and finally I construct the minimize_nested_blockmodel_dl as in the example. Then I draw it, just like in the example, and it looks great. I manage to draw it with the node names and they are fine.

Then, I would like to check the names of the nodes in the different blocks, by the levels they are arranged from the stochastic nested block model. But I do not know how to do that.

I found the function get_bstack() for the NestedBlockState object, but the index in those vertices are from 0 to N, where N is the number of vertices per level (of the model, not from my graph, I think), then how do I associate my original vertex index (which has its name) to those graphs from the different levels?

In short, I want to write down (terminal or file) the vertices from the graph (with its node names) for each level and respective block. I suppose it can be done, because the info is in the draw, but I do not know how.

Thanks in advance! Great job with graph tool, and the stochastic block model (which I haven't completely understood, but I will).

Tech info: I work with graph-tool 2.16-1 under Arch Linux, with Python 3.5, if that matters. The bipartite network have 2230 vertices and 246764 edges . From the state summary: l: 0, N: 2230, B: 174 l: 1, N: 174, B: 68 l: 2, N: 68, B: 26 l: 3, N: 26, B: 9 l: 4, N: 9, B: 3 l: 5, N: 3, B: 1

Have a great day! ____ *Rogelio Basurto Flores*

Laboratorio de Sistemas Complejos *?Unidad Profesional Interdisciplinaria en Ingenier?a y * *Tecnolog?as Avanzadas,* *Instituto Polit?cnico Nacional,* *Av. IPN # 2580, Col. Laguna Ticoman,* *?Ciudad de ?M???xico, 07340, M???xico* *Mobile Phone: 33 1551 3665* *E-Mail: rogelio.basurto@gmail.com <rogelio.basurto@gmail.com>*

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