This function gives the probability of observing the ith nearest neighbour at distance c given the (i-1)th nearest neighbour at distance a, $P(d_i >= x | d_(i-1) = a)$

1 |

`i` |
numeric, which nearest neighbour to consider |

`c` |
vector, the distance at which the ith NN was observed |

`a` |
vector, the distance at which the (i-1)th NN was observed, a <= c |

`N` |
numeric, size of the dataset |

The probability is calculated by ranking the data and assuming that the data lie on a torus. For details see Dümcke et al. "A novel test for independence derived from an exact distribution of ith nearest neighbours" (manuscript in preparation)

Probability vector

Sebastian Dümcke duemcke@mpipz.mpg.de

1 | ```
Pc_givena(10,2:7,1:6,20)
``` |

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