This function calculates the two-mode clusering coefficient as proposed by Opsahl (2010).

Note: If you are having problems with this function (i.e., run out of memory or it being slow for simulations), there is a quicker and much more memory efficient c++ function. However, this function is not fully integrated in R, and requires a few extra steps. Send me an email to get the source-code and Windows-compiled files.

1 | ```
clustering_tm(net, subsample=1, seed=NULL)
``` |

`net` |
A binary or weighted two-mode edgelist |

`subsample` |
Whether a only a subset of 4-paths should we used when calculating the measure. This is particularly useful when running out of memory analysing large networks. If it is set to 1, all the 4-paths are analysed. If it set to a value below one, this is roughly the proportion of 4-paths that will be analysed. If it is set to an interger greater than 1, this number of ties that form the first part of a 4-path that will be analysed. Note: The c++ functions are better as they analyse the full network. |

`seed` |
If a subset of 4-paths is analysed, by setting this parameter, the results are reproducable. |

Returns the outcome of the equation presented in the paper

version 1.0.0, taken, with permission, from package tnet

Tore Opsahl; http://toreopsahl.com

Opsahl, T. 2010. Triadic closure in two-mode networks: Redefining the global and local clustering coefficients. *arXiv*,1006.0887

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