reasearch notes on igraph

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diff --git a/gg_map/doc_research/20121205_ntamas.txt b/gg_map/doc_research/20121205_ntamas.txt
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+===============================================================================
+2012-12-05_15-19
+
+http://sixdegrees.hu/last.fm/technical_details.html
+http://sixdegrees.hu/last.fm/interactive_map.html
+
+===============================================================================
+
+http://www.last.fm/inbox/compose?to=ntamas
+
+Hello,
+
+I just found your last.fm map while searching about igraph, and wow, nice :) I really love the life that comes out of it.
+
+Then i red the tech details page, and there you are talking about the DrL graph layout algorithm of igraph, and from what i understand it could be used to handle "dynamic" graphs, meaning you can add verticles / edges to an already existing graph. I quickly red http://igraph.sourceforge.net/doc/html/ch18s01.html#idp25263952, and this seems possible but non obvious for me :p
+
+I'm currently writing a real time computer network visualisation tool in C, displaying nodes (machines) and links between them (network traffic).
+Atm i'm thinking about using igraph to compute the coordinates of my nodes and links, before displaying them with an external graphical library.
+In the network, new nodes come and go, as well as links, and in order to have a coherent display I need to have nodes that do not move too much when a node is added / removed.
+Interpolation of old / new coordinates for nodes and links would be handled by the external graphical library.
+
+So i'm interested in interested in adding new edges and verticles to a graph that has an already computed layout, and generate a new layout that includes my new verticles/edges without totaly breaking the previous layout.
+Did you already do such stuff ? Do you know source code that does this with igraph so I can learn ? I'm really just discovering igraph and more or less the graphs in general.
+
+If you have any pointers / advice for me it would be great !
+
+Thanks,
+Laurent
+===============================================================================
diff --git a/gg_map/doc_research/igraph.txt b/gg_map/doc_research/igraph.txt
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+Interpolation in python
+http://computationallegalstudies.com/2010/01/17/graphmovie-a-library-for-generating-movies-from-dynamic-graphs-with-igraph/
+https://gist.github.com/279578
+https://gist.github.com/279584
+
+Movies in python (ntamas)
+http://vimeo.com/14922587
+https://gist.github.com/577159
+
+Static 3d graph in python
+http://bommaritollc.com/2011/02/21/plotting-3d-graphs-with-python-igraph-and-cairo-cn220-example/