Now that Yap has digitized the machi and sho boundaries using GIS technology, he is able to accurately incorporate the data into the regions, such as the foot-binding data from his 1930 map, obtaining a clear representation of spatial distributions.
如今葉高華以 GIS 技術將街、庄邊界數值化之後，便能精確地將統計數字導入其所登錄的地區，比如這張「1930 年代本島女子纏足率」，便是將昭和 5 年（1930 年）的「國勢調查」中的數據，一筆一筆導入原本登錄的地區，才能如此清楚表現出其中的空間分佈特性。