Cassini

Producer Field Guide

HGD_Product
Producer Field Guide
HGD_Portfolio_Suite
Producer

The Cassini projection is a transverse cylindrical projection and is neither equal-area or conformal. It is best used for areas that are mostly in the north-south direction.

Construction

Cylinder

Property

Compromise

Meridians

N/A

Parallels

N/A

Graticule spacing

Linear graticules are located at the Equator, central meridian, as well as meridians 90° from the central meridian.

Linear scale

With increasing distance from central meridian, scale distortion increases. Scale is true along the central meridian and lines perpendicular to the central meridian.

Uses

Cassini is used for large maps of areas near the central meridian. The extent is 5 degrees to either side of the central meridian.

Source: Environmental Systems Research Institute, 1997

Cassini Projection

map_projection_cassini

Source: Snyder and Voxland, 1989