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.
Meridians are elliptical arcs, equally spaced, and concave toward the central meridian.
Parallels are straight lines.
Parallels are straight lines and are parallel. The individual parallels are evenly divided by the meridians (Pearson, 1990).
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).
General and thematic world maps.
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).