斜軸法を適用するために、なんらかの等角写像で回転楕円体上の経緯度を球面に投影する必要がある。国土地理院「300万分の1日本とその周辺」では等角写像として簡単な「正角緯度」(政春(2011)§8.3.3)ではなく、なぜか Gauss (1844) が用いられた。
回転楕円体上の緯度 φ, 経度 λ から球面上の緯度 ˆφ, 経度 ˆλ は次のように与えられる:
ˆλ=c(λ−λE)+λE
ˆφ=2tan−1[tanπ2+φ2(1−esinφ1+esinφ)e2]c−π2
c=√1+e2cos4(φE)1−e2
パラメタとして政春(2011)に従い次を用いると、lat/lon | 122E | 123E | 124E | 125E | 126E | 127E | 128E | 129E | 130E | 131E | 132E | 133E | 134E | 135E | 136E | 137E | 138E | 139E | 140E | 141E | 142E | 143E | 144E | 145E | 146E | 147E | 148E |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
46N | (45.98, 121.93) | (45.98, 122.93) | (45.98, 123.94) | (45.98, 124.94) | (45.98, 125.95) | (45.98, 126.95) | (45.98, 127.96) | (45.98, 128.96) | (45.98, 129.97) | (45.98, 130.97) | (45.98, 131.98) | (45.98, 132.98) | (45.98, 133.99) | (45.98, 134.99) | (45.98, 136.00) | (45.98, 137.00) | (45.98, 138.00) | (45.98, 139.01) | (45.98, 140.01) | (45.98, 141.02) | (45.98, 142.02) | (45.98, 143.03) | (45.98, 144.03) | (45.98, 145.04) | (45.98, 146.04) | (45.98, 147.05) | (45.98, 148.05) |
45N | (44.98, 121.93) | (44.98, 122.93) | (44.98, 123.94) | (44.98, 124.94) | (44.98, 125.95) | (44.98, 126.95) | (44.98, 127.96) | (44.98, 128.96) | (44.98, 129.97) | (44.98, 130.97) | (44.98, 131.98) | (44.98, 132.98) | (44.98, 133.99) | (44.98, 134.99) | (44.98, 136.00) | (44.98, 137.00) | (44.98, 138.00) | (44.98, 139.01) | (44.98, 140.01) | (44.98, 141.02) | (44.98, 142.02) | (44.98, 143.03) | (44.98, 144.03) | (44.98, 145.04) | (44.98, 146.04) | (44.98, 147.05) | (44.98, 148.05) |
44N | (43.97, 121.93) | (43.97, 122.93) | (43.97, 123.94) | (43.97, 124.94) | (43.97, 125.95) | (43.97, 126.95) | (43.97, 127.96) | (43.97, 128.96) | (43.97, 129.97) | (43.97, 130.97) | (43.97, 131.98) | (43.97, 132.98) | (43.97, 133.99) | (43.97, 134.99) | (43.97, 136.00) | (43.97, 137.00) | (43.97, 138.00) | (43.97, 139.01) | (43.97, 140.01) | (43.97, 141.02) | (43.97, 142.02) | (43.97, 143.03) | (43.97, 144.03) | (43.97, 145.04) | (43.97, 146.04) | (43.97, 147.05) | (43.97, 148.05) |
43N | (42.97, 121.93) | (42.97, 122.93) | (42.97, 123.94) | (42.97, 124.94) | (42.97, 125.95) | (42.97, 126.95) | (42.97, 127.96) | (42.97, 128.96) | (42.97, 129.97) | (42.97, 130.97) | (42.97, 131.98) | (42.97, 132.98) | (42.97, 133.99) | (42.97, 134.99) | (42.97, 136.00) | (42.97, 137.00) | (42.97, 138.00) | (42.97, 139.01) | (42.97, 140.01) | (42.97, 141.02) | (42.97, 142.02) | (42.97, 143.03) | (42.97, 144.03) | (42.97, 145.04) | (42.97, 146.04) | (42.97, 147.05) | (42.97, 148.05) |
42N | (41.97, 121.93) | (41.97, 122.93) | (41.97, 123.94) | (41.97, 124.94) | (41.97, 125.95) | (41.97, 126.95) | (41.97, 127.96) | (41.97, 128.96) | (41.97, 129.97) | (41.97, 130.97) | (41.97, 131.98) | (41.97, 132.98) | (41.97, 133.99) | (41.97, 134.99) | (41.97, 136.00) | (41.97, 137.00) | (41.97, 138.00) | (41.97, 139.01) | (41.97, 140.01) | (41.97, 141.02) | (41.97, 142.02) | (41.97, 143.03) | (41.97, 144.03) | (41.97, 145.04) | (41.97, 146.04) | (41.97, 147.05) | (41.97, 148.05) |
41N | (40.97, 121.93) | (40.97, 122.93) | (40.97, 123.94) | (40.97, 124.94) | (40.97, 125.95) | (40.97, 126.95) | (40.97, 127.96) | (40.97, 128.96) | (40.97, 129.97) | (40.97, 130.97) | (40.97, 131.98) | (40.97, 132.98) | (40.97, 133.99) | (40.97, 134.99) | (40.97, 136.00) | (40.97, 137.00) | (40.97, 138.00) | (40.97, 139.01) | (40.97, 140.01) | (40.97, 141.02) | (40.97, 142.02) | (40.97, 143.03) | (40.97, 144.03) | (40.97, 145.04) | (40.97, 146.04) | (40.97, 147.05) | (40.97, 148.05) |
40N | (39.97, 121.93) | (39.97, 122.93) | (39.97, 123.94) | (39.97, 124.94) | (39.97, 125.95) | (39.97, 126.95) | (39.97, 127.96) | (39.97, 128.96) | (39.97, 129.97) | (39.97, 130.97) | (39.97, 131.98) | (39.97, 132.98) | (39.97, 133.99) | (39.97, 134.99) | (39.97, 136.00) | (39.97, 137.00) | (39.97, 138.00) | (39.97, 139.01) | (39.97, 140.01) | (39.97, 141.02) | (39.97, 142.02) | (39.97, 143.03) | (39.97, 144.03) | (39.97, 145.04) | (39.97, 146.04) | (39.97, 147.05) | (39.97, 148.05) |
39N | (38.97, 121.93) | (38.97, 122.93) | (38.97, 123.94) | (38.97, 124.94) | (38.97, 125.95) | (38.97, 126.95) | (38.97, 127.96) | (38.97, 128.96) | (38.97, 129.97) | (38.97, 130.97) | (38.97, 131.98) | (38.97, 132.98) | (38.97, 133.99) | (38.97, 134.99) | (38.97, 136.00) | (38.97, 137.00) | (38.97, 138.00) | (38.97, 139.01) | (38.97, 140.01) | (38.97, 141.02) | (38.97, 142.02) | (38.97, 143.03) | (38.97, 144.03) | (38.97, 145.04) | (38.97, 146.04) | (38.97, 147.05) | (38.97, 148.05) |
38N | (37.97, 121.93) | (37.97, 122.93) | (37.97, 123.94) | (37.97, 124.94) | (37.97, 125.95) | (37.97, 126.95) | (37.97, 127.96) | (37.97, 128.96) | (37.97, 129.97) | (37.97, 130.97) | (37.97, 131.98) | (37.97, 132.98) | (37.97, 133.99) | (37.97, 134.99) | (37.97, 136.00) | (37.97, 137.00) | (37.97, 138.00) | (37.97, 139.01) | (37.97, 140.01) | (37.97, 141.02) | (37.97, 142.02) | (37.97, 143.03) | (37.97, 144.03) | (37.97, 145.04) | (37.97, 146.04) | (37.97, 147.05) | (37.97, 148.05) |
37N | (36.97, 121.93) | (36.97, 122.93) | (36.97, 123.94) | (36.97, 124.94) | (36.97, 125.95) | (36.97, 126.95) | (36.97, 127.96) | (36.97, 128.96) | (36.97, 129.97) | (36.97, 130.97) | (36.97, 131.98) | (36.97, 132.98) | (36.97, 133.99) | (36.97, 134.99) | (36.97, 136.00) | (36.97, 137.00) | (36.97, 138.00) | (36.97, 139.01) | (36.97, 140.01) | (36.97, 141.02) | (36.97, 142.02) | (36.97, 143.03) | (36.97, 144.03) | (36.97, 145.04) | (36.97, 146.04) | (36.97, 147.05) | (36.97, 148.05) |
36N | (35.96, 121.93) | (35.96, 122.93) | (35.96, 123.94) | (35.96, 124.94) | (35.96, 125.95) | (35.96, 126.95) | (35.96, 127.96) | (35.96, 128.96) | (35.96, 129.97) | (35.96, 130.97) | (35.96, 131.98) | (35.96, 132.98) | (35.96, 133.99) | (35.96, 134.99) | (35.96, 136.00) | (35.96, 137.00) | (35.96, 138.00) | (35.96, 139.01) | (35.96, 140.01) | (35.96, 141.02) | (35.96, 142.02) | (35.96, 143.03) | (35.96, 144.03) | (35.96, 145.04) | (35.96, 146.04) | (35.96, 147.05) | (35.96, 148.05) |
35N | (34.96, 121.93) | (34.96, 122.93) | (34.96, 123.94) | (34.96, 124.94) | (34.96, 125.95) | (34.96, 126.95) | (34.96, 127.96) | (34.96, 128.96) | (34.96, 129.97) | (34.96, 130.97) | (34.96, 131.98) | (34.96, 132.98) | (34.96, 133.99) | (34.96, 134.99) | (34.96, 136.00) | (34.96, 137.00) | (34.96, 138.00) | (34.96, 139.01) | (34.96, 140.01) | (34.96, 141.02) | (34.96, 142.02) | (34.96, 143.03) | (34.96, 144.03) | (34.96, 145.04) | (34.96, 146.04) | (34.96, 147.05) | (34.96, 148.05) |
34N | (33.96, 121.93) | (33.96, 122.93) | (33.96, 123.94) | (33.96, 124.94) | (33.96, 125.95) | (33.96, 126.95) | (33.96, 127.96) | (33.96, 128.96) | (33.96, 129.97) | (33.96, 130.97) | (33.96, 131.98) | (33.96, 132.98) | (33.96, 133.99) | (33.96, 134.99) | (33.96, 136.00) | (33.96, 137.00) | (33.96, 138.00) | (33.96, 139.01) | (33.96, 140.01) | (33.96, 141.02) | (33.96, 142.02) | (33.96, 143.03) | (33.96, 144.03) | (33.96, 145.04) | (33.96, 146.04) | (33.96, 147.05) | (33.96, 148.05) |
33N | (32.96, 121.93) | (32.96, 122.93) | (32.96, 123.94) | (32.96, 124.94) | (32.96, 125.95) | (32.96, 126.95) | (32.96, 127.96) | (32.96, 128.96) | (32.96, 129.97) | (32.96, 130.97) | (32.96, 131.98) | (32.96, 132.98) | (32.96, 133.99) | (32.96, 134.99) | (32.96, 136.00) | (32.96, 137.00) | (32.96, 138.00) | (32.96, 139.01) | (32.96, 140.01) | (32.96, 141.02) | (32.96, 142.02) | (32.96, 143.03) | (32.96, 144.03) | (32.96, 145.04) | (32.96, 146.04) | (32.96, 147.05) | (32.96, 148.05) |
32N | (31.96, 121.93) | (31.96, 122.93) | (31.96, 123.94) | (31.96, 124.94) | (31.96, 125.95) | (31.96, 126.95) | (31.96, 127.96) | (31.96, 128.96) | (31.96, 129.97) | (31.96, 130.97) | (31.96, 131.98) | (31.96, 132.98) | (31.96, 133.99) | (31.96, 134.99) | (31.96, 136.00) | (31.96, 137.00) | (31.96, 138.00) | (31.96, 139.01) | (31.96, 140.01) | (31.96, 141.02) | (31.96, 142.02) | (31.96, 143.03) | (31.96, 144.03) | (31.96, 145.04) | (31.96, 146.04) | (31.96, 147.05) | (31.96, 148.05) |
31N | (30.96, 121.93) | (30.96, 122.93) | (30.96, 123.94) | (30.96, 124.94) | (30.96, 125.95) | (30.96, 126.95) | (30.96, 127.96) | (30.96, 128.96) | (30.96, 129.97) | (30.96, 130.97) | (30.96, 131.98) | (30.96, 132.98) | (30.96, 133.99) | (30.96, 134.99) | (30.96, 136.00) | (30.96, 137.00) | (30.96, 138.00) | (30.96, 139.01) | (30.96, 140.01) | (30.96, 141.02) | (30.96, 142.02) | (30.96, 143.03) | (30.96, 144.03) | (30.96, 145.04) | (30.96, 146.04) | (30.96, 147.05) | (30.96, 148.05) |
30N | (29.96, 121.93) | (29.96, 122.93) | (29.96, 123.94) | (29.96, 124.94) | (29.96, 125.95) | (29.96, 126.95) | (29.96, 127.96) | (29.96, 128.96) | (29.96, 129.97) | (29.96, 130.97) | (29.96, 131.98) | (29.96, 132.98) | (29.96, 133.99) | (29.96, 134.99) | (29.96, 136.00) | (29.96, 137.00) | (29.96, 138.00) | (29.96, 139.01) | (29.96, 140.01) | (29.96, 141.02) | (29.96, 142.02) | (29.96, 143.03) | (29.96, 144.03) | (29.96, 145.04) | (29.96, 146.04) | (29.96, 147.05) | (29.96, 148.05) |
29N | (28.96, 121.93) | (28.96, 122.93) | (28.96, 123.94) | (28.96, 124.94) | (28.96, 125.95) | (28.96, 126.95) | (28.96, 127.96) | (28.96, 128.96) | (28.96, 129.97) | (28.96, 130.97) | (28.96, 131.98) | (28.96, 132.98) | (28.96, 133.99) | (28.96, 134.99) | (28.96, 136.00) | (28.96, 137.00) | (28.96, 138.00) | (28.96, 139.01) | (28.96, 140.01) | (28.96, 141.02) | (28.96, 142.02) | (28.96, 143.03) | (28.96, 144.03) | (28.96, 145.04) | (28.96, 146.04) | (28.96, 147.05) | (28.96, 148.05) |
28N | (27.96, 121.93) | (27.96, 122.93) | (27.96, 123.94) | (27.96, 124.94) | (27.96, 125.95) | (27.96, 126.95) | (27.96, 127.96) | (27.96, 128.96) | (27.96, 129.97) | (27.96, 130.97) | (27.96, 131.98) | (27.96, 132.98) | (27.96, 133.99) | (27.96, 134.99) | (27.96, 136.00) | (27.96, 137.00) | (27.96, 138.00) | (27.96, 139.01) | (27.96, 140.01) | (27.96, 141.02) | (27.96, 142.02) | (27.96, 143.03) | (27.96, 144.03) | (27.96, 145.04) | (27.96, 146.04) | (27.96, 147.05) | (27.96, 148.05) |
27N | (26.96, 121.93) | (26.96, 122.93) | (26.96, 123.94) | (26.96, 124.94) | (26.96, 125.95) | (26.96, 126.95) | (26.96, 127.96) | (26.96, 128.96) | (26.96, 129.97) | (26.96, 130.97) | (26.96, 131.98) | (26.96, 132.98) | (26.96, 133.99) | (26.96, 134.99) | (26.96, 136.00) | (26.96, 137.00) | (26.96, 138.00) | (26.96, 139.01) | (26.96, 140.01) | (26.96, 141.02) | (26.96, 142.02) | (26.96, 143.03) | (26.96, 144.03) | (26.96, 145.04) | (26.96, 146.04) | (26.96, 147.05) | (26.96, 148.05) |
26N | (25.96, 121.93) | (25.96, 122.93) | (25.96, 123.94) | (25.96, 124.94) | (25.96, 125.95) | (25.96, 126.95) | (25.96, 127.96) | (25.96, 128.96) | (25.96, 129.97) | (25.96, 130.97) | (25.96, 131.98) | (25.96, 132.98) | (25.96, 133.99) | (25.96, 134.99) | (25.96, 136.00) | (25.96, 137.00) | (25.96, 138.00) | (25.96, 139.01) | (25.96, 140.01) | (25.96, 141.02) | (25.96, 142.02) | (25.96, 143.03) | (25.96, 144.03) | (25.96, 145.04) | (25.96, 146.04) | (25.96, 147.05) | (25.96, 148.05) |
25N | (24.96, 121.93) | (24.96, 122.93) | (24.96, 123.94) | (24.96, 124.94) | (24.96, 125.95) | (24.96, 126.95) | (24.96, 127.96) | (24.96, 128.96) | (24.96, 129.97) | (24.96, 130.97) | (24.96, 131.98) | (24.96, 132.98) | (24.96, 133.99) | (24.96, 134.99) | (24.96, 136.00) | (24.96, 137.00) | (24.96, 138.00) | (24.96, 139.01) | (24.96, 140.01) | (24.96, 141.02) | (24.96, 142.02) | (24.96, 143.03) | (24.96, 144.03) | (24.96, 145.04) | (24.96, 146.04) | (24.96, 147.05) | (24.96, 148.05) |
24N | (23.96, 121.93) | (23.96, 122.93) | (23.96, 123.94) | (23.96, 124.94) | (23.96, 125.95) | (23.96, 126.95) | (23.96, 127.96) | (23.96, 128.96) | (23.96, 129.97) | (23.96, 130.97) | (23.96, 131.98) | (23.96, 132.98) | (23.96, 133.99) | (23.96, 134.99) | (23.96, 136.00) | (23.96, 137.00) | (23.96, 138.00) | (23.96, 139.01) | (23.96, 140.01) | (23.96, 141.02) | (23.96, 142.02) | (23.96, 143.03) | (23.96, 144.03) | (23.96, 145.04) | (23.96, 146.04) | (23.96, 147.05) | (23.96, 148.05) |
23N | (22.96, 121.93) | (22.96, 122.93) | (22.96, 123.94) | (22.96, 124.94) | (22.96, 125.95) | (22.96, 126.95) | (22.96, 127.96) | (22.96, 128.96) | (22.96, 129.97) | (22.96, 130.97) | (22.96, 131.98) | (22.96, 132.98) | (22.96, 133.99) | (22.96, 134.99) | (22.96, 136.00) | (22.96, 137.00) | (22.96, 138.00) | (22.96, 139.01) | (22.96, 140.01) | (22.96, 141.02) | (22.96, 142.02) | (22.96, 143.03) | (22.96, 144.03) | (22.96, 145.04) | (22.96, 146.04) | (22.96, 147.05) | (22.96, 148.05) |
22N | (21.97, 121.93) | (21.97, 122.93) | (21.97, 123.94) | (21.97, 124.94) | (21.97, 125.95) | (21.97, 126.95) | (21.97, 127.96) | (21.97, 128.96) | (21.97, 129.97) | (21.97, 130.97) | (21.97, 131.98) | (21.97, 132.98) | (21.97, 133.99) | (21.97, 134.99) | (21.97, 136.00) | (21.97, 137.00) | (21.97, 138.00) | (21.97, 139.01) | (21.97, 140.01) | (21.97, 141.02) | (21.97, 142.02) | (21.97, 143.03) | (21.97, 144.03) | (21.97, 145.04) | (21.97, 146.04) | (21.97, 147.05) | (21.97, 148.05) |
c = 1.004729