Last modified August 3, 2007
Print all topics in : "Supported map projections"
Also called Cassini, this transverse cylindrical projection maintains scale along the central meridian and all lines parallel to it and is neither equal area nor conformal. It is most suited for large–scale mapping of areas predominantly north–south in extent.
A transverse cylinder is projected conceptually onto the globe and is tangent along the central meridian. Cassini–Soldner is analogous to the Equirectangular projection in the same way Transverse Mercator is to the Mercator projection. The name Cassini–Soldner refers to the more accurate ellipsoidal version, developed in the 19th century and used in this software.
Learn more about the Equirectangular projection
Learn more about the Transverse Mercator projection
Learn more about the Mercator projection
Conceptually a line, specified as the central meridian.
The equator, central meridian, and meridians 90° from the central meridian.
Used primarily for large-scale mapping of areas near the central meridian. The extent on a spheroid is limited to 5° to either side of the central meridian. Beyond that range, data projected to Cassini–Soldner may not project back to the same position. Transverse Mercator often is preferred due to the difficulty in measuring scale and direction on Cassini–Soldner.
Normally used for large–scale maps of areas predominantly north–south in extent.
Used for the Ordnance Survey of Great Britain and some German states in the late 19th century. Also used in Cyprus, former Czechoslovakia, Denmark, Malaysia, and the former Federal Republic of Germany.