If the 'Gyoki-zu' which was made when Gyoki was alive would exist in the first place, then the map should have been centered around Yamato Province because Japan's capital was located in Heijo-kyo (the ancient capital of Japan in current Nara) in Yamato Province (except for several years), but such a map has not been actually found.
そもそも行基が生きていた時代の「行基図」が実際に存在するならば、日本の首都は大和国平城京（数年の例外はあっても）に存在したのであるから、大和国を中心とした地図であった筈であるがこうした地図は実際のところ見つかってはいない。