Topological roles characterize species as its roles between communities or modules, we calculate the modules using
Topological roles are described by two parameters: the standardized within-module degree dz and the among-module
connectivity participation coefficient PC. The within-module degree is a z-score that measures how well a species is
connected to other species within its own module compared with a random graph. The participation coefficient PC
estimates the distribution of the links of species among modules. As the community algorithm is stochastic we run it several
times and return the repeated runs for both parameters.
calc_topological_roles(g, nsim = 1000, ncores = 0)
an Igraph object with the network
number of simulations with different community
number of cores to use paralell computation, if 0 sequential processing is used.
a data frame with two numeric fields: within_module_degree, among_module_conn
Guimerà, R. & Nunes Amaral, L.A. (2005). Functional cartography of complex metabolic networks. Nature, 433, 895–900
Kortsch, S. et al. 2015. Climate change alters the structure of arctic marine food webs due to poleward shifts of boreal generalists. - Proceedings of the Royal Society B: Biological Sciences 282: 20151546. https://doi.org/10.1098/rspb.2015.1546
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