Aitoff

Description

A compromise projection developed in 1889 for use with world maps.

Projection method

Modified azimuthal. Meridians are equally spaced and concave toward the central meridian. The central meridian is a straight line and half the length of the equator. Parallels are equally spaced curves, concave toward the poles.

Linear graticules

The equator and the central meridian.

Properties

Shape

Distortion is moderate.

Area

Moderate distortion.

Direction

Generally distorted.

Distance

The equator and central meridian are at true scale.

Limitations

Neither conformal nor equal area. Useful only for world maps.

Parameters

Desktop

• False Easting
• False Northing
• Central Meridian

Note:

Supported on spheres only.

Workstation

• Radius of the sphere of reference
• Longitude of Central Meridian
• False Easting (meters)
• False Northing (meters)

Note:

Supported on spheres only.