5-2 Special mapping equations 201
equiareal (Lambert)
equidistant (Postel)
conformal (UPS)
orthographic
Lagrange conformal
gnomonic
circular diagram
Fig. 5.27. Circular diagram, polar azimuthal projections.
∆ [
◦ ]
distortion
energy
Fig. 5.28. Distortion energy over a spherical cap: six polar azimuthal projections, 0
◦ ≤ ∆ ≤ 60
◦ .