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## Re: [igraph] how to add disconnected nodes to a graph?

**From**: |
Tamás Nepusz |

**Subject**: |
Re: [igraph] how to add disconnected nodes to a graph? |

**Date**: |
Fri, 6 Dec 2013 23:24:10 +0100 |

>* I misspoke, I meant closeness*
Closeness is different; an isolated vertex will have a closeness centrality of
1/n where n is the number of vertices. This is due to how igraph defines
closeness centrality for disconnected graphs: when two nodes are disconnected,
igraph assumes that their distance is n because we cannot use infinity for
obvious reasons, and n is always larger than the longest possible geodesic in a
network so it sort of makes sense.
T.

**[igraph] how to add disconnected nodes to a graph?**, *Ahmed Abdeen Hamed*, `2013/12/06`
**Re: [igraph] how to add disconnected nodes to a graph?**, *Tamás Nepusz*, `2013/12/06`
**Re: [igraph] how to add disconnected nodes to a graph?**, *Ahmed Abdeen Hamed*, `2013/12/06`
**Re: [igraph] how to add disconnected nodes to a graph?**, *Tamás Nepusz*, `2013/12/06`
**Re: [igraph] how to add disconnected nodes to a graph?**, *Ahmed Abdeen Hamed*, `2013/12/06`
**Re: [igraph] how to add disconnected nodes to a graph?**, *Tamás Nepusz*, `2013/12/06`
**Re: [igraph] how to add disconnected nodes to a graph?**, *Ahmed Gmail*, `2013/12/06`
**Re: [igraph] how to add disconnected nodes to a graph?**,
*Tamás Nepusz* **<=**
**Re: [igraph] how to add disconnected nodes to a graph?**, *Ahmed Abdeen Hamed*, `2013/12/07`