Same as estimate.rds, but for a fixed theta.

1 2 | ```
estimate.rds2(data, Sij, init, const, arc = FALSE,
maxit = 10000, theta)
``` |

`data` |
An integer vector of the degrees of each individual sampled. |

`Sij` |
An integer matrix of the counts of individuals with rank j at sampling period t. Row names correspond to the degrees. |

`init` |
Optional initialization values. |

`const` |
Control the concentration of the mapping of the theta parameter from the contstrained domain to the real line. |

`arc` |
Should the degrees in the snowball be taken in account (TRUE) or just the size of the snowball (FALSE). Defaults to FALSE. |

`maxit` |
Number of maximal optimization iterations. |

`theta` |
Value of theta parameter. Assumed known. |

TBC

johnros

1 2 | ```
data(brazil)
estimate.rds2(data=data.degree, , Sij = data.Sjt, const=50, arc=FALSE, maxit=1000, theta = 1)
``` |

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