Geography Reference
In-Depth Information
Fig. 18.2. Bonne mapping, pseudo-conic projection, parallel circle and conic center
Inverse mapping equations:
r
R α
Λ =
cos cot Φ 0 + Φ 0
R ,
(18.32)
r
r
R .
Φ =cot Φ 0 + Φ 0
Principal stretches:
2+ Λ 2 cos Δ
2
( Λ S ) 1 = 1
sin Δ
Δ +tan Δ 0
+
2
Δ 0
4
,
4 Λ 2 cos Δ
2
+ Λ 4 cos Δ
sin Δ
Δ +tan Δ 0 − Δ 0
sin Δ
Δ +tan Δ 0 − Δ 0
+
(18.33)
2+ Λ 2 cos Δ
2
sin Δ
Δ +tan Δ 0
( Λ S ) 2 = 1
2
Δ 0
4
.
4 Λ 2 cos Δ
2
+ Λ 4 cos Δ
sin Δ
Δ +tan Δ 0 − Δ 0
sin Δ
Δ +tan Δ 0 − Δ 0
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