| c_EdgeListFromSegList | Turn a segment list into an edgelist suitable for constructing an ngraph |
| c_listlengths | A simple function to compute the lengths of the elements of an R list |
| c_seglengths | Compute summed segment lengths or total cable |
| c_topntail | Find the first and last elements of all vectors in a list |
| c_topntail_list | Find the first and last elements of all vectors in a list |
| c_total_cable | Compute summed segment lengths or total cable |