Create object containing lengths of borders from sf object.
border_lengths.RdThe function border_lengths creates a dataframe for each area of
sf containing information about the shared borders with other areas.
Within this package the primary use is within border_precision.
Value
A list of nrow(sf) data frames which each have columns:
originThe origin node.perimeterThe perimeter of the origin node.touchingThe index of a node having shared border with the origin node.lengthThe length of border betweenoriginandtouching.weightThe proportion oforigin's border which is withtouching.