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## [igraph] random graph in C

**From**: |
giuseppe de marco |

**Subject**: |
[igraph] random graph in C |

**Date**: |
Tue, 21 Oct 2008 10:19:51 +0900 |

**User-agent**: |
Thunderbird 2.0.0.17 (X11/20080914) |

HI.

`I would like to generate a power-law random graph , with varying
``exponent, but in C not in R.
``I saw that there is igraph_barabasi_game function, but I do not know how
``to set the attractive parameter .
``In fact, in the growing graph model of Dorogovstev the probability of
``incoming edges at each time step is:
`P(k) = A + k^alpha
and
for large time-step
P(k) ~ k^(-gamma)
where
gamma = 2 + A/m.
So, if I could control A and m I could control gamma.
where
--
Giuseppe De Marco, PhD
Toyota Technological Institute

`468-8511 Aichi 2-12-1 Hisakata, Tenpaku-ku,
``Nagoya, Japan
`Email: demarco at toyota-ti dot ac dot jp
Tel (int): +81 (052)-809-1802
Skype-Id: giuseppe_dem2

**[igraph] random graph in C**,
*giuseppe de marco* **<=**