Today I've been able to get quite a lot more data for eco-centric networks. The images on the left show some more complex social networks (not particularly well arranged) which give an insight into the sort of visualisations that can be created using the NodeXl tool.These are both simple eco-centric networks which show how one user (me for example) follows others, these others may also be following me. Some of the people I follow also follow each other - hence the rather hectic lines connecting all the different actors in the network. These samples are limited to >200 people but each dot represents an account or person. The size of the dot in these visualisations has been defined by the 'betweeness centrality' value which it has within the network i.e. '..how many of the shortest paths between two others some actor lies on'. The colour of the dots has been defined by their Eigenvector Centrality - how important that actor is within the network. These can now be used to compare with other networks and to represent many other characteristics of the network visually.
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