GeomJpSegment           Drawing a segment line segment that shows the
                        boundary
extreme_points          The extreme points of Japan
gsi_tiles               Add a tile layer from GSI
jgd2011_bbox            JGD2011 / Japan Plane Rectangular CS
jp47prefectural_offices
                        Japan Prefectural Goverment Offices
move_jpn_rs             Clip and move some geometries for mapping
parse_lon_dohunbyo      Parse longitude and latitude values in DMS
replace_dohunbyo_kanji
                        Replace Kanji in degrees, minutes, and seconds
                        with symbols
st_nearest_jgd2011      Identify the Japan plane rectangular CS
