[Nauty] find a function to convert graphs from planar code format to graph6 format.

[lczhangmath]

Hi,


I know that when I use the softwere plantri without considering the embedding of planar graphs, we can use the -g option. However, sometimes I have pre-stored some files in the planar code format. Is there a separate function to convert them to the Graph6 format? Currently, the methods I know involve Mathematica( by Szabolcs) or Sage  (cage may be aslo ok), but I'm not aware of any standalone C functions for this purpose.


Best wishes,
Licheng