Understanding Map Projections
Understanding Map Projections
Understanding Map Projections
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WINKEL I<br />
Distance<br />
Generally, scale is made true along latitudes 50°28' N<br />
and S.<br />
LIMITATIONS<br />
Neither conformal nor equal area. Useful only for<br />
world maps.<br />
The central meridian is 0°.<br />
USES AND APPLICATIONS<br />
Developed for use in general world maps. If the<br />
standard parallels are 50°28' N and S, the total area<br />
scale is correct, but local area scales vary.<br />
DESCRIPTION<br />
Often used for world maps, the Winkel I projection<br />
is a pseudocylindrical projection that averages the<br />
coordinates from the Equirectangular (Equidistant<br />
Cylindrical) and Sinusoidal projections. Developed<br />
by Oswald Winkel in 1914.<br />
PROJECTION METHOD<br />
Pseudocylindrical. Coordinates are the average of the<br />
Sinusoidal and Equirectangular projections.<br />
Meridians are equally spaced sinusoidal curves<br />
curving toward the central meridian. The central<br />
meridian is a straight line. Parallels are equally<br />
spaced straight lines. The length of the poles and the<br />
central meridian depends on the standard parallels.<br />
If the standard parallel is the equator, Eckert V<br />
results.<br />
LINEAR GRATICULES<br />
The parallels and the central meridian.<br />
PROPERTIES<br />
Shape<br />
Generally distorted.<br />
Area<br />
Generally distorted.<br />
Direction<br />
Generally distorted.<br />
96 • <strong>Understanding</strong> <strong>Map</strong> <strong>Projections</strong>
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