For details about how to employ the python scripts check the wiki entry
https://wiki.paparazziuav.org/wiki/Module/guidance_vector_field 

gvfApp draws an aircraft following the guidance vector vield, ex:
python gvfApp 80 , draws for the aircraft with id 80.

gvfFormation control several aircraft in a circular formation, ex:
python gvfFormation ./formation/topology.txt ./formation/sigmas.txt
./formation/ids.txt 80 10
