Although the Cassini projection has been largely replaced by the Transverse Mercator, it is
still in limited use outside the United States and was one of the major topographic mapping
projections until the early 20th century.
Classification: Transverse and oblique cylindrical
Available forms: Forward and Inverse, Spherical and ellipsoidal
Defined area: Global, but best used near the central meridian with long, narrow areas
Alias: cass
Domain: 2D
Input type: Geodetic coordinates
Output type: Projected coordinates
Projection String
+proj=cass
Required Parameters
lat_0
Optional Parameters
lon_0
x_0
y_0
ellps
R
+hyperbolic: Use modified form of the standard Cassini-Soldner projection known as the Hyperbolic Cassini-Soldner (used in EPSG:3139).
Cassini (Cassini-Soldner) Projection
Although the Cassini projection has been largely replaced by the Transverse Mercator, it is still in limited use outside the United States and was one of the major topographic mapping projections until the early 20th century.
Classification: Transverse and oblique cylindrical
Available forms: Forward and Inverse, Spherical and ellipsoidal
Defined area: Global, but best used near the central meridian with long, narrow areas
Alias:
cassDomain: 2D
Input type: Geodetic coordinates
Output type: Projected coordinates
Projection String
Required Parameters
lat_0Optional Parameters
lon_0x_0y_0ellpsR+hyperbolic: Use modified form of the standard Cassini-Soldner projection known as the Hyperbolic Cassini-Soldner (used in EPSG:3139).