Robinson Pseudocylindrical

Producer Field Guide

HGD_Product
Producer Field Guide
HGD_Portfolio_Suite
Producer

Robinson Pseudocylindrical projection provides a means of showing the entire Earth in an uninterrupted form. Continents appear as units and are in relatively correct size and location. Poles are represented as lines.

Construction

Pseudocylinder

Property

Compromise

Meridians

Meridians are elliptical arcs, equally spaced, and concave toward the central meridian.

Parallels

Parallels are straight lines.

Graticule spacing

Parallels are straight lines and are parallel. The individual parallels are evenly divided by the meridians (Pearson, 1990).

Linear scale

Generally, scale is made true along latitudes 38°N and S. Scale is constant along any given latitude, and for the latitude of opposite sign (Environmental Systems Research Institute, 1992).

Uses

General and thematic world maps.

(Environmental Systems Research Institute, 1992).

Meridians are equally spaced and resemble elliptical arcs, concave toward the central meridian. The central meridian is a straight line 0.51 times the length of the Equator. Parallels are equally spaced straight lines between 38°N and S, and then the spacing decreases beyond these limits. The poles are 0.53 times the length of the Equator. The projection is based upon tabular coordinates instead of mathematical formulas (Environmental Systems Research Institute, 1992).