Eckert I

Producer Field Guide

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Producer Field Guide
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Producer

Six projections were presented in 1906 by Max Eckert in which all the poles are lines half as long as the Equator, and all parallels are straight lines parallel to each other. In Eckert I, a great amount of distortion at the Equator is due to the break at the Equator.

Construction

Pseudocylinder

Property

Neither conformal nor equal-area

Meridians

Meridians are converging straight lines that are equally spaced and broken at the Equator.

Parallels

Parallels are perpendicular to the central meridian, equally spaced straight parallel lines.

Graticule spacing

See Meridians and Parallels. Poles are lines one half the length of the Equator. Symmetry exists about the central meridian or the Equator.

Linear scale

Scale is true along latitudes 47° 10’ N and S. Scale is constant at any latitude (and latitude of opposite sign) and any meridian.

Uses

To show a straight-line graticule.

Source: Snyder and Voxland, 1989

Eckert I Projection

map_projection_eckert_1

Source: Snyder and Voxland, 1989