Description Usage Arguments Value

This function allows the user to calculate, for every given polygon (in the array 'index'), the list of its neighbouring polygons.

1 |

`arc` |
The list of arc definitions, as returned by 'get.arcdata'. |

`pal` |
The list of polygon definitions, as returned by 'get.paldata'. |

`index` |
An array with the polygons we want to use to calculate their neighbours. It must be an array. If 'index' is not set, then all the polygons are used. |

A list in which the first element is a vector of the neighbouring polygons of the fist element in 'index', and so on.

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