get.nb
From RArcInfo v0.412
by Virgilio G�mezRubio
Function for calculating neighbouting polygons.
This function allows the user to calculate, for every given polygon (in the array 'index'), the list of its neighbouring polygons.
 Keywords
 file
Usage
get.nb(arc,pal, index=NULL)
Arguments
 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.
Value

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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